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WindData Explorer™ User Manual

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1. Erected at DI 7 11 2012 Closed at DI 7 11 2012 v Magnetic declination 7 Inclination angle Inclination direction 7 Figure 10 Create met station dialogue o z I Figure 11 Magnetic declination with positive variation from geographic north e The anemometer is not mounted correctly e The boom is not mounted correctly e The mast is not erected correctly It is of great importance that the inclination angle is 0 or very close to 0 because even a small inclination angle has a huge impact on the measured wind speed Files In some projects there are relevant documents which need to be attached to the met station data These files can be added by clicking the icon to the right of the field Files 8 6 Exchange data Data imported into the WDI can be exported to two types of files A wind data CSV file and a site and met station Wind Data Exchange WDE file format which holds all data stored on site and met Page 16 53 Document WindData Explorer User Manual Document Version 4 Inclination Inclination Inclination A n e ar a Figure 12 Three examples of inclination angles station level The WDE file format can directly be imported into the WDI and the CSV format can be imported using the WDI Import Wizard 8 6 1 Export to CSV file format When a met station is selected the icon can be activated The CSV file can be imported
2. Figure 40 Menu for Enable Disable Selected Points WDA will return a number of timespans that lives up to the filter criteria The filter results will be listed in chronological order see figure 41 Clicking on a filter result will make the graphs zoom in on the time span of the selected filter result item allowing for a visual inspection of any of the filter results Disabling data for the entire collection of filter results identified by a filter is done by clicking the Disables all points for the selected filter button In case only a subset of the filter results are to be disabled it is necessary to zoom to the individual filter result by clicking it and disabling the data manually in the time series graph 15 2 1 Custom filters In the WDA it is possible to build a custom filter Select the filter type Signal Filter and the filter can be defined by setting the filter properties The signal a mathematical operator and a threshold must be defined Two signal filters can be combined using the logical operators AND and or OR 15 2 2 Predefined filters In the WDA three different predefined filters can be selected e The Compare Signals Filter enables the user to do simple comparisons of two signals by looking for periods where one signal is larger smaller or equal to another signal e The Constant Period Detection filter is a filter that searches for periods with a constant value in a signal The filter has b
3. Bebo iji Marini icApri ii Mayo dun Jul Aug Sep Oct Nov Dec All i Sesa Cam em sw 0 70 cm 18 a an 066 28 5 787 a 02 12 784 am mo au sm am nsii amam re E cam so sou DME 780 0 cam an om as 770 tm es 7 8 7m an 15 ia o oa 78 139 L 8 00 08 7 36 09 mo ss 733 a o ips rata gt 2 7 au ax ee 19 da 12 7R an aa 27 All 783 831 821 816 834 738 66 626 74 8121 829 826 7 70 Seasonal Graph Mean of M1 60Am WS Avg 10 min m s 850 E 200 Es E Figure 59 The Temporal tab page of the Statistics dashboard In this case an Hour x Month plot for a wind speed signal has been selected In the bottom a monthly means plot is shown Page 46 53 Document WindData Explorer User Manual Document Version 4 if Statistics SS Signal Details Temporal Availability Signal M1 60Am WS Avg 10 min M1 58m WD Avg 10mi gt Availability of pairs of All data 88 7 wind speed and direction Effective data period 706 days Total period 796 d M1 604m WS Avg 10 min ill T T rem T T T TE sa Lenci Se ee Ps e oi IO eR Mh 981 81810810191 A a A P P eB 9 e ani Aug 2010 0 0 0 0 0 Sep 2010 0 0 000 0 00 oj o o ol 00 00 0 E son 100 0 E das as Oct 2010 ma 144 pa 100 0 Nov 2010 100 0 Dec 2010 o o o osta 74 0 Jan 2011 H 882 Feb 2011 ua 97 3 Mar 2011 I Apr 2011 May 2011 mE tas Jun 2011 148 mam A iv p na am a ua n
4. The Gunshot dashboard also features the functionality Compare Operator which allows the user to subtract or divide different channels from with each other This is performed to see if any extreme differences are present for different heights or directions Differences can occur due to e g mast shadowing effects or terrain induced speed up speed down effects Page 42 53 Document WindData Explorer User Manual Document Version 4 IT Distribution DUET Options gt Signal Bin Width Sector Summary i M1 60Am WS Avg 10 min 1 37 gt Mean m s hg Wind Direction Sectors Sector _ M1 58m WD Avg 10 min 127 an z 7701 3485 0484 103180 Chart Table Charts gt Histogram Frequency M1 58m WD Avg 10 min o M1 Courtenay 1 me 2 30 0 1183 so 0 0887 pur E Histogram WASP zo s 5 MLE E Quantiles 240 120 Ej LE jo 150 Cumulative Distribution Function Probability M1 Saam WS Avg 10 min M1 60Am WS Avg 10 min m s Figure 53 The Distribution dashboard which can be used to e g inspect the frequency rose and investigate the quality of the Weibull fitting tf Gunshot er Options x Signal Compare Operator Threshold Point Size M1 60Am WS Avg 10 min 7 M1 608m WS Avg 10 min 4 00 E Direction Sensor Period Length Period Transparency M1 58m WD Avg 10 min an y __ Chart Table Charts Ea Ratio Gunshot M1 60Am WS Avg 1
5. ChangeTime 06 12 2012 09 52 17 03 00 11 08 2011 11 40 11 08 2011 Disabled by eshar Lightning damage ChangeTime 06 12 2012 09 53 33 12 40 20 08 2011 15 10 20 08 2011 Disabled by eshar Wind shading from tower Change Time 06 12 2012 09 52 58 1 58m WD Avg 10 min 15 20 17 02 2011 16 00 17 02 2011 Disabled by eshar Equipment malfunction Change Time 06 12 2012 09 51 12 13 00 05 03 2011 14 40 05 03 2011 Disabled by eshar Weird direction Change Time 06 12 2012 09 51 39 10 40 11 03 2011 18 30 11 03 2011 Disabled by eshar Icing or wet snow event Change Time 06 12 2012 09 52 17 03 00 11 08 2011 11 40 11 08 2011 Disabled by eshar Lightning damage Change Time 06 12 2012 09 53 33 12 40 20 08 2011 15 10 20 08 2011 Disabled by eshar Wind shading from tower Change Time 06 12 2012 09 52 58 1 45m WD Avg 10 min 15 20 17 02 2011 16 00 17 02 2011 Disabled by eshar Equipment malfunction Change Time 06 12 2012 09 51 12 13 00 05 03 2011 14 40 05 03 2011 Disabled by eshar Weird direction Change Time 06 12 2012 09 51 39 10 40 11 03 2011 18 30 11 03 2011 Disabled by eshar Icing or wet snow event Change Time 06 12 2012 09 52 17 7 12 40 20 08 2011 15 10 20 08 2011 Disabled by eshar Wind shading from tower Change Time 06 12 2012 09 52 58 bx M1 32Am WS Avg 10 min bx M1 32Bm WS Avg 10 min e 15 20 17 02 2011 16 00 17 02 2011 Disabled by eshar Equipment malfunction Change Time 06 12 2012 09 51 12 13 00 05 03
6. Jan 2011 Jul 2011 an 2012 Jul 2012 27 08 2010 02 30 00 65 00 62 00 0 04 0 04 27 08 2010 02 40 00 64 00 60 00 0 04 0 03 SbU ny r a s MiSmWDAgipmia g a gee a a DICA y ADA 27 08 2010 02 50 00 64 00 60 00 0 06 0 05 300 o q 300 M14Sm WD Avg 10min Fy 0 att JE z E o copa I tp deli na a E a 27 08 2010 03 00 00 67 00 62 00 0 04 0 04 E La q eee 1 lega Fa E E o A E N e ET 27 08 2010 03 10 00 70 00 65 00 0 06 0 06 ss Se ree ote ad Er ni i Ling 27 08 2010 03 20 00 72 00 69 00 0 06 0 07 a n PEO ess E E ZIO T 27 08 2010 03 30 00 73 00 69 00 0 08 0 08 A OG 4 e 27 08 2010 03 40 00 73 00 70 00 0 05 0 05 Ill Figure 29 Time Series window Both tabs Time Series and Data are shown Signals are automatically colour coded so that signals from the same height are given the same colour in the three graphs i e wind speed mean at 50m has the same colour as turbulence intensity and wind direction if the data exist at 50m It is possible to change the colour theme from the default Classic to Colour Ramp by right clicking a graph and choosing Signal Colour Theme see figure 37 Furthermore it is possible to change the colour of a single signal see section 15 1 5 If a channel contains minimum maximum LTC and or standard deviation values are displayed using the same colour within a graph but with different types of dotted lines see figure 30 Figure 30 The time
7. see figure 43 Basic mathematical operations addition subtraction division and multiplication can be used to combine signals and or to apply any kind of constant value see figure 44 where a computed signal that is an average of two other signals Page 37 53 Document WindData Explorer User Manual Document Version 4 is created Thereafter the signal can be presented graphically just like any other signal Computed signals will carry the special calculator icon to indicate that they are calculated signals A computed signal will assume the type of the base signal the first signal from which the computed signal is created and can be added to graphs of same type as the base signal Signal Name Average ws Computation w M160AmWS Avg 10min Y hr 7 or M1 60Bm WS Avg 10 min D zz JJ Signal Type Preview M1 60Am WS Avg 10 min M1 60Bm WS Avg 10 min 2 ok Canoe Figure 44 The Create Computed Signal dialog In this example the average of two wind speed signals in the same height is calculated Note Computed signals are not automatically saved i e they only exist as long as the data set is open in the WDA if it is not actively saved by the user 15 3 2 Time series substitution In the WDA it is possible to create a so called substituted signal which is a signal that is a combi nation of two or more signals into one signal This feature can be use
8. 0 33 m4s 1005 2012 18 50 10005 2012 18 50 Mi 604m WS Avg 10 min 8 m s M1 64m WS Ti 10 man 0 33 m s 2200 2012 20 00 2205 2012 20 10 M1 604m WS Avg 10 min gt 8 m s M1 604m WS Ti 10 min gt 0 33 m4s 30 06 2012 19 10 30 06 2012 19 10 Mi 604m WS Avg 10 min gt 8 m s M1 604m WS Ti 10 min gt 0 33 m4s 1 13 13 Nest gt gt Document Version 4 Figure 41 The filter section in the WDA In the upper left corner four image buttons can be found from left to right there are Add signal filter Remove signal filter Edit signal filter and Disables all points for the selected filter To the right of the image buttons a drop down list with all the current filters is found The rest of the filter section shows a list of filter results for the selected filter Select Filter Filter Expression Filter Properties High ws AND high ti Signal Filter M1 60Am WS Avg 10 min gt 8 m s And 10 min gt 0 75 m s aj ic TNS Expression Description M1 60Am WS Ti 10 min ls ll 0 75 Compare signal to value Cancel Figure 42 The Add Filter dialog The user can define a custom filter using basic mathematical operators and logical operators or by choosing a predefined filter In this case two custom filters have been combined with a logical AND clause window the minimum period while the leading time and the recovery time are periods before and after the filter
9. 00 89 041 997 114335 114 629 00 M1 47Bm WS Ti 10 min 47 00m Wind Speed Ti 0 10 000 1 14 0 08 901 103224 114629 11 111 M1 45m WD Avg 10 min 45 00m Wind Direction Avg 16 07 2010 00 00 00 19 09 2012 00 50 2 18 17628 0 00 359 00 93 92 888 101 791 114629 12 544 M1 32Am WS Avg 10 min 32 00m Wind Speed Avg 16 07 2010 00 00 00 19 09 2012 00 50 218 670 040 2320 314 901 103224 114629 11 111 M1 32Am WS Sd 10 min 32 00m Wind Speed Sd 16 07 2010 00 00 00 19 09 2012 00 50 218 066 000 780 042 997 114 335 114 629 00 M1 32Am WS Ti 10 min 32 00m Wind Speed Ti 0 11 000 1 67 0 08 901 103224 114629 11 111 M1 32Bm WS Avg 10 min 32 00m Wind Speed Avg 16 07 2010 00 00 00 19 09 2012 00 50 218 669 040 2320 3 15 901 103224 114 629 11 111 M1 328m WS Sd 10 min 32 00m Wind Speed Sd 16 07 2010 00 00 00 19 09 2012 00 50 218 066 0 00 780 042 997 114 335 114 629 00 M1 32Bm WS Ti 10 min 32 00m Wind Speed Ti 0 11 000 1 14 0 08 901 103 224 114629 11 111 FA PE iS z o EPI n 7 AA era E Courtenay 1 Height 60 00m Created By VESTAS eshar Latitude 47 180383 dd Erected Date lt not specified gt Longitude 98 608367 dd Closed Date lt not closed gt GMT Offset 06 00 00 if Statistics Ea Xx Signal Details Temporal Availability Signal Period Statistic Colours Transparency M1 60Am WS Avg 10 min z Hour x Month 7 Average 7 Vestas WS ARS A A Jo 1 tid Seasonal Mean of M1 60Am WS Avg 10 min m s Hota cea
10. 2011 14 40 05 03 2011 Disabled by eshar Weird direction Change Time 06 12 2012 09 51 39 10 40 11 03 2011 18 30 11 03 2011 Disabled by eshar Icing or wet snow event Change Time 06 12 2012 09 52 17 2 03 00 11 08 2011 11 40 11 08 2011 Disabled by eshar Lightning damage Change Time 06 12 2012 09 53 33 7 12 40 20 08 2011 15 10 20 08 2011 Disabled by eshar Wind shading from tower Change Time 06 12 2012 09 52 58 bx M1 60Am WS Avg 10 min bx M1 60Bm WS Avg 10 min 00000 DID DE m z TAIAIAI E yo gt pe EE Apply Cancel Figure 63 The Save Changes graphical view where disabled data will be shown for inspection before applying the changes in the database Pressing the Apply button will save the changes Note Clicking the Apply button as shown in figure 63 does not erase any data it merely updates the error codes in the database Important Clicking the Cancel button as shown in figure 63 reverts all filtering enabling disabling of data that has been done in the current WDA session All previous changes can be viewed in the Change History located just below Save Changes 17 Long term correction In the WDA it is possible to perform a long term correction LTC of the filtered wind data Long term correction which is also known as Measure Correlate Predict MCP compares long term data either modelled data or measurement data to the short term m
11. 32Am WS Avg 10 min r Point Size 200 A Transparency I l 5 0 10 0 15 0 20 0 25 0 M1 60Am WS Avg 10 min ll Figure 62 The scatter plot In this case a 60m wind speed is plotted against a 32m wind speed Disabled points are grey in the scatter plot Transparency is adjusted to see where the majority of the data is concentrated shown in the Save Changes window see figure 63 Page 48 53 Document WindData Explorer User Manual Document Version 4 Save Changes Apply these changes E E M1 47Am WS Avg 10 min O 15 20 17 02 2011 16 00 17 02 2011 Disabled by eshar Equipment malfunction Change Time 06 12 2012 09 51 12 13 00 05 03 2011 14 40 05 03 2011 Disabled by eshar Weird direction Change Time 06 12 2012 09 51 39 ie o 10 40 11 03 2011 18 30 11 03 2011 Disabled by eshar Icing or wet snow event Change Time 06 12 2012 09 52 17 i 03 00 11 08 2011 11 40 11 08 2011 Disabled by eshar Lightning damage ChangeTime 06 12 2012 09 53 33 o 12 40 20 08 2011 15 10 20 08 2011 Disabled by eshar Wind shading from tower Change Time 06 12 2012 09 52 58 EP M1 47Bm WS Avg 10 min 15 20 17 02 2011 16 00 17 02 2011 Disabled by eshar Equipment malfunction Change Time 06 12 2012 09 51 12 13 00 05 03 2011 14 40 05 03 2011 Disabled by eshar Weird direction ChangeTime 06 12 2012 09 51 39 10 40 11 03 2011 18 30 11 03 2011 Disabled by eshar Icing or wet snow event
12. calculates from the original scale and offset values instead of the calibrated data tick the Use original check box Page 24 53 Document WindData Explorer User Manual Document Version 4 10 2 Time adjustment To perform a time adjustment see figure 24 select the target configuration and click the icon Time adjustment of v1 mheit 6 25 2012 8 40 PM Site Lamu Met station Lamu Current settings GMT offset hours GMT offset minutes Daylight savings 4 0 Central US New settings GMT offset hours GMT offset minutes Daylight savings 2 E o E Central Brazil Adjustment process information Figure 24 Time adjustment dialog Select the new GMT offset and the new Daylight savings options under New settings and click Start to perform the adjustment When finished click OK and close the dialog by clicking Done Page 25 53 Part IV WindData Analyser Document WindData Explorer User Manual Document Version 4 11 Introduction The analysis of wind data is the most time consuming and important step in a Wind amp Site analysis Wind data with 100 coverage and no errors in the time series are almost impossible to attain and one should always be suspicious if such data appear Due to the many climatic factors present at a wind power plant site wind data has to be inspected and assessed manually to determine if different data loggers anemometers and wind vanes are r
13. file s in the browser window If multiple files are selected WDI filters the files according to the header leaving Page 17 53 Document WindData Explorer User Manual Document Version 4 New wind data import step 1 of 4 Files and Signals Site Datan Met station Datan_Jaibo Wind data files Time adjustment GMT offset hours GMT offset minutes Daylight savings 0 0 None Apply time correction during import Signals Idx Imp Ch Header text Figure 13 Data import wizard Step 1 only those with matching headers Additional files with different headers must be imported separately When signals are set up properly click Next located in the lower right corner to proceed to step 2 9 1 1 Parser set up The parser automatically determines the header line the first data line the group separator and the decimal separator when the data file is loaded If the detection goes wrong these settings can be corrected in the parser configuration dialogue To access it click the amp icon located near the upper right corner The dialogue consists of two panels The settings are changed in the upper panel while the bottom panels provides a preview of the data file for visual inspection When all corrections have been made click OK to save changes 9 1 2 Inspect a file Sometimes it can be demanding to set up a data file manually It may be necessary to inspect the file visually to set
14. in a graph or listed in a table The view is shifted by clicking the Time Series or Data tab Both tabs are shown in figure 29 The following sections 15 1 1 through 15 1 6 describe the functionality of the time series window 15 1 1 Default view and colour coding By default the WDA creates three graphs with wind speed turbulence intensity and wind direction All signals of type wind speed turbulence intensity and wind direction are then plotted in the corre sponding graph as the signals are loaded Page 30 53 Document WindData Explorer User Manual Document Version 4 Time Senes Data Time Series Data ca Fi Range All y Load Select M1 Courtenay 1 Time Stamp M158mWD Avg M145mWD Avg M160BmWSTi M160AmWSTi M1 2 EE fa a iria Equals Y Equals Y Equals VY Equals Y Equals Y Equ T 20 uiognwsagionel 27 08 2010 00 40 00 70 00 66 00 0 07 0 07 Mi Awg 10 mi 1 E H a bm sangro 27 08 2010 00 50 00 70 00 68 00 0 06 0 06 a 27 08 2010 01 00 00 71 00 67 00 0 05 0 05 27 08 2010 01 10 00 69 00 65 00 0 04 0 04 Jan2011 t OTT dan2012 Judo 27 08 2010 01 20 00 68 00 64 00 0 03 0 03 27 08 2010 01 30 00 67 00 64 00 0 03 0 03 M1 804m WS Ti 10 min AM ee 27 08 2010 01 40 00 66 00 64 00 0 05 0 05 3 27 08 2010 01 50 00 64 00 62 00 0 05 0 05 E E 27 08 2010 02 00 00 63 00 60 00 0 05 0 05 27 08 2010 02 10 00 64 00 61 00 0 04 0 04 ci di I i 27 08 2010 02 20 00 65 00 62 00 0 05 0 05 3 0
15. into e g Excel and WindPRO 8 6 2 Export and import of the WDE file format When a site or a met Station is selected it is possible to export data to WDE file format by pressing the icon If a met station is selected all data on the met station and the site will be exported If a site is selected the site and all its met stations will be exported The data in the WDE file can be imported by pressing the icon Before the data is imported it is checked whether data already exists and if this is the case it is necessary to confirm to overwrite existing site and or met station data 9 Import data To import data a site with a met station has to be created see section 8 2 and section 8 5 for in structions Select the target met station and click the icon to start the data import wizard A wide range of formats is currently supported The only widely used format that is intentionally unsupported is WindPRO Export files containing multiple time stamps These files can be imported using WDI Helper This is a small software tool to convert WindPRO wind data files into a csv file that the VSU can import At the time of writing SODAR and LIDAR data are still quite rare and the support is limited If any problems are encountered please contact the WDE team and or check out the latest release of the WDI Helper 9 1 Data import wizard Step 1 To select the data file s click the l icon located in the upper right corner and select the
16. menu items for that module A greyed out menu item indicates that the item is not accessible In figure 2 for example the menu items Analyse Wind Data and Save Changes are greyed out because wind data must first be selected in the Select Wind Data task 4 2 Coordinate Converter While performing various tasks in the WDE it is necessary to define a position e g to locate a met station The Coordinate Converter CC is a common interface used across WDE which provides this functionality The coordinates can be entered manually or they can be extracted directly from the map by right clicking the map When manual input is used make sure to select the correct Coordinate Reference System and the correct Projection using the drop down menus in the Source panel Note It is possible to specify a target coordinate system However the target coordinate system choice does not affect the coordinates saved in WDE The feature is provided as a quick way to transform coordinates for use outside WDE e g in WindPRO Page 6 53 Document WindData Explorer User Manual Af WindData Explorer File Tools Help WIND IT MEANS THE WORLD TO US Vestas WindD ata Welcome Y WindD ata gt WindD ata Analyser Most recent questions and answers Update of existing WindPortal met station 0 1 NRG update WindPortal February 26 2013 eshar votes answer J 0 WDE user manuals and video tutorials tutorial user manuals vi
17. series graph with several different types of signals from the same channel plotted 15 1 2 Set up graphical views To add a new graph in the Time Series window click the Add Graph image button or press Ctrl N and a new window will appear see figure 32 In this window Select Graph Type using the drop down menu where the corresponding possible channels become visible in the Select initial signal drop down menu Click OK to get the graph to show To delete a graph click the Delete Graph image button or press Ctrl X in the graphical window Figure 31 From left to right the image buttons used to add and delete a graph and remove a signal Multiple graphs can be displayed if more than three graphs are present it is necessary to scroll down using the scroll functionality in the right hand side of the Time Series window Tip It is possible to drag and drop imported signals into existing graphs if they are dropped into the right graph type For instance it is not possible to drag wind direction signals into wind speed graphs and vice versa Page 31 53 Document WindData Explorer User Manual Document Version 4 Select Graph type Select initial signal Chi WS Mean 10 min 40 00m Figure 32 This dialog appears when the Add Graph button is clicked Several signals and signals from different channels and met masts can be added to the same graph A signal is added to an existing graph by dragging it from th
18. 0 min Mi 60Bm WS Avg 10 min Frequency M1 58m WD Avg 10 min x o ms M1 Courtenay 1 n gt 4 10 1 76 675 Reference 1 00 ans 5 z270 1125 E wm o Al 225 mm 2025 159 o 500 60 150 M1 58m WD Avg 10 min Figure 54 The Gunshot dashboard allows for e g investigations regarding tower shading In this example two average wind speed signals have been divided with each other and the tower shading around 120 and 300 degrees is easily identified 15 4 3 Wind shear dashboard The Wind Shear Dashboard seen in figure 55 performs a shear analysis based on mean value of the enabled and concurrent data from the different wind speed measuring heights It is possible to include Page 43 53 Document WindData Explorer User Manual Document Version 4 all data in the calculation or narrow it down to sector wise data Data from all wind speed bins is used By default all wind speed signals are used to fit the profile from which the wind shear is calcu lated but it is possible to deselect one or more wind speed signal s in the Wind Speed Signals drop down list By default the graph window holds only a power law curve but a logarithmic can be applied Like in the other dashboards a double click on one of the charts in the graph browser in the right side of the wind shear dashboard makes it possible to swap between the following e Vertical wind shear profile e Diurnal wind shear profile e Monthly wind s
19. 1 1 et 50 20 vi B 03 20 qa us a p jd om cs 0 i Dec 2011 Jan 2012 Feb 2012 Mar 2012 Apr 2012 May 2012 Jun 2012 Jul 2012 Figure 60 The Availability tab page of the Statistics dashboard Availability is always shown for a combination of wind speed and wind direction i e both signals have to be present for a data point to be available 15 4 5 Turbulence Intensity dashboard The Turbulence Intensity dashboard shows the TI Turbulence Intensity in the following ways e Turbulence intensity by wind speed as scatter plot e Turbulence intensity by wind speed as curve fit e Turbulence intensity by hour of day as curve fit e Turbulence intensity by sector as rose plot The TI is plotted along with IEC 61400 1 Ed 2 and Ed 3 turbulence The wind speed range can be controlled manually if the default range from 4 30 m s is inadequate see figure 61 15 4 6 Scatter Plot A scatter plot is a good tool to identify outliers in data and can be used to visualise a specific sit uation such as a storm or another event that falls out of the normal trend In the Scatter Plot all channels can be plotted against each other Scatter plots can sometimes display a huge number of points that barely give any useful information Therefore it is possible to change the point size and the transparency which makes it easier to identify the trends in the point cloud see figure 62 Tip A double click on a point in the s
20. 49Am Wind Speed H E 49Bm Wind Speed VE 48 7m Wind Direction H E 38 3m Wind Speed H E 38 3m Wind Direction H E 30m Wind Speed H E 21 1m Wind Speed H E 20 1m Wind Direction TEY 2m Temperature DIO India E DIQ United States ANTARCTICA Terms of Use KR e W 1322 28 km Y 84 336983 28 921631 49 218750 H 18622 05 km Figure 25 The menu items with the different tasks that can be performed in the WDA Page 27 53 Document WindData Explorer User Manual Document Version 4 Before using the WDA for the first time it is necessary to import data through the Wind Data Im porter WDI module where the data is stored in a database on the user s local harddrive In the WDA module five different tasks can be performed see the menu items in figure 25 1 Select Wind Data determines what data is for the analysis Channels signals from one or more met stations can be selected 2 Analyse Wind Data features numerous ways of analysing and filtering data 3 Save Changes saves the data set along with a log showing what has been disabled in the original raw data Once changes have been saved data is ready for use in LTC and or an AEP Annual Energy Production calculation 4 Long Term Correction automatically performs a long term correction of the selected data series using any long term data source The long term data must be in the VSU database and raw data and long term data must be overlapping 5 Reportin
21. Analysis is performed or if the data analysis has to be validated against a customer s or a third party s analysis Furthermore all change reasons are written to the WDI report To enable data points that have previously been disabled follow the same procedure as for disabling data just choose Enable Points instead of Disable Points When enabling a point it is not required to provide a change reason Tip To make a selection from the cursor to the start end of the series press Shift Home End To select all deselect all press Space Ctrl A Note Enabled disabled and all filtered data is not automatically saved i e changes only exist as long as the data set is open in the WDA if it is not actively saved by the user 15 2 Signal filter It is possible to apply filters to all saved signals by clicking the Add signal filter button see figure 41 The Add Filter menu will appear see figure 42 and the user can define either a custom filter or use a predefined filter making it possible to detect extreme values and outliers A filter in the Page 34 53 Document WindData Explorer User Manual Document Version 4 Select affected signals 7 5 Deselect Al 60 00m M1 60Bm WS Avg 10 min M1 604m WS Avg 10 min 58 00m W M158m WD Avg 10 min 47 00rn W M147Am WS Avg 10 min M1 47Bm WS Avg 10 min 45 00m M1 45m WD Avg 10 min Select change reason This is a custom reason for disabling data
22. In the WDA it is possible to generate a wind data report automatically This is done by clicking the Reporting menu point which will launch the WDA Report Generator see figure 67 A wind data set must be loaded before the Reporting menu point will be available A report is based on a signal pair wind speed and wind direction which is defined by clicking the Select button When the signal pair has been selected it is possible to define which sections the report should contain by ticking the check boxes in the Optional Sections on and off The Long term correction section is only available when LTC has been performed and saved Clicking the Generate button will create the report which is in PDF format Once the report is generated the button View is enabled Page 52 53 Document WindData Explorer User Manual E WindData Explorer File Tools Help J WindData Welcome WindData Importer WindData Analyser pa WDA Report Generator Selected Signal Pair muormeanstuewororous Vestas Select WindData Explorer met station M1 49Am WS Avg 10 min M1 48 7m WD Avg 10 min Optional Sections Please select the sections to include in the WDA report If the data available for the currently selected signal pair is not sufficient for a particular section the section will be greyed out lt Windspeed 4 Turbulence intensity 7 Energ
23. OOS UU A 18 dd Senle dilata 19 9 1 4 Configuration templates sq sc 4 44 46 04 a e bee ae ii i 20 92 Data import wizard tp sradicare he ee ee E ea 2 9 5 Data import wizard STEP Dm earn E io Re oe line a ba 21 gu Data import wizard Step das 2 4 4 Ya it RR SR BS 22 Quo Import Wind Portal datar lada a a Be ee aL a A eS 23 96 Update WindPortalkdata ss gds page ee A e de eB ps a 23 10 Correct previously imported data 24 LO Sie a lora On sed aureola rane a erat 24 102 Time Ad US A Rei Ge ig NE 25 IV WindData Analyser 26 11 Introduction 27 12 Interface overview 27 13 Data structure 28 14 Select wind data 29 15 Analyse wind data 30 Lo SCG a oasi yas SEAT A ets E oe E SD A 30 15 1 1 Default view and colour coding eee ee eee 30 t9 1 2 Set np graphical Views e ca da 6 5 we ooh oe e oe BA aw Boek we A 31 Lolo ZOOM Lhe STARS sode dor a a oo we A Ei e eS oe ei 32 tod Reorder graphs 3 deb adsl e de ie 33 Lobo Graph properticS o 4 a4 644 Oe 4 RSS eG tea ae 33 5 1 6 Enable Bid Gisele Calan xd mA E be ds aia id a da e 39 A o anal eee Rn 34 bool CUSTOM eis sms ie e SE ME ROE BS 35 15 22 Predefined fltets io Lu pubb AE A e A ae eS 35 15 3 Dional AI AAN 37 5 01 Computed Signals ss urpihaotgt ribbpa oe ed a AE 37 15 3 2 Time series substitution 2 22 38 LA DANDO assi bia ed LR Dave OP a A 4 41 15 4 1 Distribution dashboard ee ERA NINE ne Ew Cees 42 L542 Gunshot dashboard ag a wards e d e
24. Up Down normal steps press Right Left or for small steps press Ctrl Right Left Page 32 53 Document WindData Explorer User Manual Document Version 4 S Figure 34 Buttons for zooming in and out in the time series graph views Range 10 Figure 35 The range view functionality sets the range to a defined value in days 15 1 4 Reorder graphs To reorder graphs mark a graph and click one of the green arrows Move Graph Up or Move Graph Down see 36 or press Ctrl ArrowUp ArrowDown 3 Figure 36 Graphs can be moved up and down by clicking the above image buttons 15 1 5 Graph properties It is possible to change the graph properties such as setting minimum and maximum values of the axis and assigning custom colours to specific signals by right clicking a graph and choosing Properties See figure 37 Properties Wind Speed m s Axes Colors Axis X axis Axis Y Value axis Grid Y Major Grid Figure 37 The graph properties dialog Clicking the tab Colors enables the user to assign different colours to the signals 15 1 6 Enable and disable data Data shown in the time series main window can be enabled or disabled in several ways Left click the graph and drag to the left or to the right to mark a period Notice that the selection is made for all graphs in the time series view The selection can also be made using the keyboard For big steps press Shift Page Up Down no
25. WindData Explorer User Manual Document WindData Explorer User Manual Document Version 4 Version History Version Date Status 1 February 2013 Written by RATMI 2 March 2013 Reviewed by LENIL 3 April 2013 Updated by RATMI 4 April 2013 Reviewed by LENIL Contents I Framework 5 1 Introduction 6 2 System Requirements 6 3 System Architecture 6 4 Graphical User Interface 6 dsl MOdulets sten e AE VE aa ad 6 Az Coordinale CONVerel asus i e a ir E EE a E E e 6 43 Co mmon interface ICONS ca am barare dp DE a gto ie ae eh GS T II WindData Welcome 9 5 Welcome Page 10 III WindData Importer 11 6 Introduction 12 7 Interface overview 12 il INES ILION O serie ar a A E aio ar Be 12 lt Data Merarc riu bec ara dE oa A a ee Gi 162 8 Manage met stations 13 S L Search forexistine date me seda Ci RR e a A 13 8 2 Create a site and add a site visit report oso e e e a 13 8 3 Delete a site a met station or a configuration LL 14 8 4 Delete and view a site visit report e 14 So Add a mMer STAO 6 4 amp gw Gast ak See bh E ae e ba de 15 SO chance dd aero a Ge gee ee es SEM eee we a pa 16 8 6 1 Export to CSV file format ss 4624065 a n 17 8 6 2 Export and import of the WDE file format 0 17 Page 2 53 Document WindData Explorer User Manual 9 Import data 17 Ol Data import wizard Step domina 2460 85 amp bo eS daa ED e 17 OT Pares Up sia de hi DEE AA 18 OT Inspecta file ais dos oe eee e ei a
26. WindPortal Settings Please specify the E mail API Key and base URL which is used by the WindPortal system The base URL should in most cases be set to the default URL which automatically is suggested in the NRG WindPortal Settings dialog To start importing WindPortal data select a site and click the el This will start up the My WindPortal Sites dialog where all data linked to the WindPortal account can be inspected When a WindPortal site is selected it is possible to click the Select button and the data from the WindPortal site will be used as default information for a new VSU met station Information retrieved from through WindPortal can be corrected and extended in the Create Met Station dialog see section 8 5 When clicking OK in the met station dialog the time series data from WindPortal will automatically be imported into the new VSU WindPortal met station 9 6 Update WindPortal data When a WindPortal met station is selected it is possible to update the met station with new data from WindPortal Click the el icon to update the WindPortal met station with data from WindPortal Page 23 53 Document WindData Explorer User Manual Document Version 4 10 Correct previously imported data Correction of previously imported data is performed on configuration level and recalibration as well as time adjustment is supported 10 1 Recalibration To start recalibration see figure 23 select the target configuration and click the H i
27. ange the grouping or to average the signals before the LTC is computed Wind speed Ch Height Duration p 60 0 Py Courtenay 1 12 8y 114335 a 600 470 470 32 0 32 0 Wind direction Ch Height dd 7 580 M 8 450 Figure 65 Signals both site signal and reference signal are set by selecting a wind speed and a direction The site signal is selected from the data that is open in the WDA while the reference signal is selected from the entire range of wind data that is imported to the local database Time alingment VSU carries out a time alignment of reference and site data as soon as site and reference signals are selected The LTC calculator tries to time shift the reference wind speeds 3 hours in 10 minute steps to get the highest correlation between reference wind speeds and site wind speeds The time shift timespan which gives the highest correlation is utilised to correct the reference wind speeds and the reference wind directions Page 50 53 Document WindData Explorer User Manual Document Version 4 The main reason for carrying out the time alignment is to compensate for that the reference data can be kilometres away from the site data Example Reference data is located 3 km away from the site and the mean wind speed is 7 m s This means that the time delay between the reference data and the site data is 3 km 7 1000 km s 429s 7 1 min Another reason for
28. catter plot returns a highlight of the point in the time series graph in the WDA main window 16 Save Changes When the task of anylysing the wind data is completed the next step is to save changes if any filters have been applied or points have been manually disabled All periods with disabled periods will be Page 47 53 Document WindData Explorer User Manual Document Version 4 Y Turbulence Intensity ai it Options gt Turbulence Intensity Wind Speed Wind Speed Range m s M1 60Am WS Ti 10 min y M1 60Am WS Avg 10 min 40055 to 30 008 Wind Direction Sectors Sector IEC Turbulence Category IEC Standard Curve SD Factor M1 58m WD Avg 10 min x 12 gt an 1288 Chart Table Charts gt Turbulence Intensi Wind e Sen Turbulence Intensity by Hour of Day M1 Courtenay 1 a2 08 HA ADAN Mean TI 1 28 SD E AS NTM Class A i a k NTM Class B 0 05 NTM Class M1 60Am WS Ti 10 min M1 60Am WS Avg 10 min MI Gon WS Ti 10min Figure 61 The Turbulence Intensity dashboard Here the turbulence intensity by wind speed curve fit plot is shown along with IEC 61400 1 Ed 3 representative TI To select one of the other plots double click the charts in the graph list in the lower right corner IT Scatter Plot pe o Scatter v X Options Y Xx X Axis Variable M1 Courtenay 1 M1 60Am WS Avg 10 min E 250 Y Axis Variable o IM1
29. commended to fill out all fields if the information is available When all information has been entered click OK to create the met station Local time settings The values entered in these fields are applied to data when the time series data is loaded The idea is that even though all correctly imported data is saved in GMT 0 00 for consistency is is possible to view the data in the WindData Analyser WDA module in local time These values can be corrected later to be able to view the data with another GMT offset Magnetic declination Enter the degree of magnetic declination if any which is the measured angle between the local mag netic field the direction that the north pole of a compass or of any magnet tends to point and the true north geographic north The declination is positive when the magnetic north is east of the true north and negative when the magnetic north is west of the true north Inclination angle Enter the degree of inclination i e the angle that the anemometer differs from vertical An inclination angle can occur if Page 15 53 Document WindData Explorer User Manual Document Version 4 General information Name Country None Longitude Latitude Mast height m 5 Local time settings Local GMT offset hours Local GMT offset min Local daylight savings 0 o E Logger serial no x
30. con Recalibration of v1 mheit 3 12 2012 3 07 PM Site Lamu Met station Lamu Current Current Original Original Recalb Ch Type WDA Last recalibration Reason scale factor offset scale factor offset 1 Wind speed 4 No VESTAS emher 6 25 2012 6 13 PM Correction from customer 1 100000 2 000000 0 756000 0 420000 Wind speed 40 VESTAS emher 6 25 2012 6 13 PM Correction from customer 1 100000 2 000000 0 761000 0 38000 Wind speed 50 m No VESTAS emher 6 25 2012 6 13 PM Correction from customer 1 100000 2 000000 0 757000 0 756000 0 400000 10 Temperature 3m No 0 136000 86 381000 A S cc Ch Type j igi New scale factor New offset Wind speed 5 000000 Wind speed Wind speed nd speed E20 0 a a n da Ww N a Wind speed Import mistake Select one or more channels and enter new settings Figure 23 Recalibration dialog Select the target signals by ticking the appropriate boxes located to the left in the upper panel Enter the new calibration constants along with a reason for the recalibration in the lower panel When finished click Start to perform the calibration and close the dialog by clicking Done To reverse a previous recalibration it is possible to tick the reset check box instead of entering offset and scale factor values To do the recalibration on the raw data which WDI
31. d choose Create However two substituted signals of the same type Page 40 53 Document WindData Explorer User Manual Document Version 4 cannot exist simultaneously To remove an existing signal either right click and choose Remove or click the Remove Substitution Signal button CO ie O 9 Range Figure 50 The Create Substitution Signal and Remove buttons which are located in the upper left corner of the Time Series Substitution main window Saving a substitution signal When all replacements have been performed on the substitution signal s the substitution signal s can be saved Doing this is a 2 step procedure first step is to click the OK button in the Time Series Substitution main window This will add the substitution signal s to the list of signals in the WDA main window At this point the substituted signal is not yet saved but exists as a temporary computed signal note that title is in italic type which indicates that the signal is not saved To save the substituted signal to the database select the signal in the signal list and click the Save signal button above the signal list i a E CO PPT TOTO ro Cr MIT cc JAR O e y A a A y a 4 Ay Taa IT room Mirim A mm Mm Adu MT G m bind Speed Mg CAT SubstCho Sd 10 minutes M1 60Bm Vind Speed Ti 10 mante SE M1 606m Wind Speed Sd jim sip M1 60Bm Wind Speed Avg 10 mane M1 60A
32. d to replace data in a signal with data from another measurement device of the same type Typical scenarios where it would be beneficial to splice signals are tower shading where data is corrupted in a certain sector and it makes sense to combine un biased sectors from two anemometers or if an instrument for some other reason is malfunctioning over a longer period of time The time series substitution feature is launched by clicking the Create substituted signal button seen in figure 43 A substituted signal in the WDA is always created with the use of a base channel The base channel can be any channel that is loaded into the WDA and the base channel defines the type and measurement height of the new substituted channel Figure 45 shows how the substituted channel is created In this case the base channel is of type wind speed and has mean and standard deviation signals The WDA automatically suggests creating the same signals as the base channel but it is only possible to create a subset of the base channel signals When one or more substitution signals have been created the main Time Series Substitution window is shown see figure 46 The main window consists of one or more time series plots corresponding to the number of created substitution signals which can be navigated in the same way as the normal time series plots in the WDA Similar to the normal WDA it is possible to drag signals to the time series plots from a list in the lo
33. deo February 26 2013 eshar votes answer A 4 How do recalibrate the data on a met station recalibration WDI February 1 2013 Rasmus vote answer Vestas Wind Systems A S Document Version 4 Praz wima Wata po Seve Lances Figure 2 The WDA module and its menu items 4 3 Common interface icons The icons in table 1 are incorporated into the design of the WDE to create a consistent and user friendly interface Page 7 53 Document WindData Explorer User Manual Document Version 4 Projection la Input East North A 23634338 Y 1506167 Target Coordinate Reference System Projection Output XJEast Y North X 23 38 0603 Figure 3 The Coordinate Converter tool Icon Name Example of usage P Add Add documents files sites met stations etc Remove Remove documents files sites met stations etc Edit Edit documents values entered e g longitude met stations etc Refresh Refresh the current screen Busy Wheel Indicates that the WDE is busy and processing data Table 1 Common interface icons Page 8 53 Part II WindData Welcome Document WindData Explorer User Manual Document Version 4 5 Welcome Page The Welcome Page is meant as a help function where it is possible to view Most recent questions and answers The full Q amp A is to be found in the menu together wit
34. doing the time alignment is to detect or compensate for missing correction to UTC time in the site data If site data is in local time e g Shanghai China UTC GMT 8 hours then the reference data will be time shifted with a maximum of three hours as this gives the highest correlation which indicates that something is wrong with the time settings on the site data Grouping and averaging The user has the possibility to change grouping of the signals and apply an averaging The grouping is default set to sector wise with 12 sectors but it is possible to choose a different number of sectors or to create an overall transfer function with no grouping Averaging of the signals can be applied with a user defined averaging period The default setting is not to use averaging Model selection When the data for the LTC has been selected and the signals aligned the next step is to select the model that is to be saved Four models are calculated automatically see figure 66 they are e Linear Regression e Linear Regression with noise added e Sector wise Linear Regression e Sector wise Linear Regression with noise added Each model has a set of parameters R value and Standard Error that describes how well the refer ence data correlates with the measurement data model and how well the predicted LTC time series correlates with the measurement data prediction Two of the models have Gaussian noise added in order to preserve the charac
35. e signal list located in the lower right corner see figure 28 onto the desired graph which must be of the same type as the signal that is being added To remove a signal click the Remove Signals image button see figure 31 in the Time Series window and a Remove Signals dialog will appear see figure 33 Select signals to be removed by ticking the relevant boxes and click Remove To reset the graphical view press F5 Select signals to remove 40 00m F E LTC Chi LTC WS Mean 1 hour 40 00m E Ch1 WS Mean 10 min 40 00m FJ F4 Cha WS StdDev 10 min 40 00m P lt Ch3 WS Min 10 min 40 00m E E ch2 WS Max 10 min 40 00m Figure 33 The Remove Signals dialog Tip To export the graphs for external purposes Ctrl C copies all graphs to clipboard while Ctrl S saves all graphs to a file 15 1 3 Zoom the graphs It is possible to zoom in and out to see specific details in the graphs To zoom in click the zoom in image button or press and to zoom out click the zoom out image button or press Both buttons are seen in figure 34 To zoom to a specific part of the graph select it and click the zoom in button or press Enter An alternative method of zooming is to use the range view option and scroll through the data with the scrollbar that becomes visible if a range less than the full data series is selected When zoomed in it is also possible to scroll using the keyboard For big steps press Page
36. easurement data analysed in the WDA and determines if the measured period is representative for the wind regime at the location Data selection The first step of the LIC procedure is to select the wind data that is to be included in the LTC analysis see figure 64 Two site signals consisting of a wind speed signal and a wind direction signal and reference signals consisting of a wind speed signal and a wind direction signal must be selected see figure 65 As a minimum there must be three months of overlapping data but the recommendation Page 49 53 Document WindData Explorer User Manual Document Version 4 is that at least one year of concurrent data is available Long Term Correction Data Selection Site Signals Select Courtenay 1 M1 60Am WS Avg 10 min M1 58m WD Avg 10 min Reference Signals Select MESO Courtenay 1 Alignment Grouping Site Averaging Start Date 2g August 2010 End Date 27 August 2012 Duration 730 days 2 years Reference 4 LTC Output Start Date 02 January 2000 21 End Date 30 September 2012 Duration 4655 days 12 74 years Concurrency Duration 730 days 2 years Fraction 16 Time Lag 00 00 00 Reset Next gt Figure 64 The long term correction data selection step A site signal and a reference signal must be selected The software automatically aligns the two signals and calculates the concurrency The user has the possibility to ch
37. ecording the same trends within the same time period Wind data from on site measurements can contain several climatic parameters at different heights including for example wind speed wind direction temperature pressure and humidity Most of these parameters will hold statistical values such as mean minimum maximum and standard deviation In the analysis of all these parameters it will often become apparent that some measuring periods or heights are erroneous and will therefore increase the overall uncertainty of the estimated wind on site unless these data are found and disabled for later calculations throughout the Wind amp Site process The end result from the WindData Analyser WDA will be a clean data series ready for production calculations load evaluations and climatic conditions documentation 12 Interface overview The main purpose of WDA is to assess the wind characteristics on the site and to filter out mal functioning logger data and any other erroneous measurements recorded due to external factors The WDA consists of a number of graphical views which help the user to identify and disable all errors in the measurements st WindData Explorer File Tools Help o WIND IT MEANS THE WORLD TO US Vestas e WindD ata Welcome WindD ata Importer WindData RV A a DIO Australia Analyser as 5 Denmark ay i DJ WindData Explorer site VIM WindData Explorer met station 89d 12828 H E
38. ee EO a RAE SO E er E 42 15 4 3 Wind Shear dashboard dos 2 00 ce e Gow ei dia a e 43 Lo 44 Stalistics dashboard srta RL RI LA SR 46 15 4 5 Turbulence Intensity dashboard LL 47 Lobo Scale Plot 6 2 64 Seb ae di ls odio SEES 4T 16 Save Changes AT Page 3 53 Document Version 4 Document WindData Explorer User Manual Document Version 4 17 Long term correction 49 18 Reporting 52 Page 4 53 Part I Framework Document WindData Explorer User Manual Document Version 4 1 Introduction The WindData Explorer WDE is a platform for conducting analyses of wind power plants It can assist users in standardising the way in which they carry out siting related work 2 System Requirements The WDE can operate on computers with e Operating System Windows 7 or Vista recommended x64 Windows e Screen Resolution 1024 x 768 pixels e Memory 4 GB recommended 8 GB e Free disk space 50 MB 3 System Architecture The WDE is a Windows desktop application based on the Microsoft NET Framework Data from the WDE is either stored in local files or in the local database which is installed together with the WDE The local database is a Microsoft SQL Server Express 4 Graphical User Interface 4 1 Modules WDE consists of a number of modules which are shown on the left hand side of the screen see figure figure 1 To select a module click on the module title Clicking on a module title also reveals the list of
39. een developed especially for detecting periods with icing but can be used for other purposes too like identifying malfunctioning instruments When applying a Constant Period Detection filter a max change a minimum period a leading time and a recovery time must be defined The max change defines the maximum variation within the filter Page 35 53 Document WindData Explorer User Manual O O lt lt Prev 26 07 2010 22 40 26 07 2010 22 40 Mi 604m WS Avg 10 min gt 8 m s M1 80m WS Ti 10 min gt 0 33 m4s A Ne evs He od TO OI A pr Bai nl n Ti o CTS o E uam Doi il baie o i 06052011 19 40 05 05 2011 19 40 M1 04m WS Avg 10 min gt 8 ms M1 604m WS Ti 10 man gt 0 22 mvs 2306 2011 22 40 2506 2011 22 40 M1 604m WS Avg 10 min gt 8 ms M 1 60Am WS Ti 10 min gt 0 33 m s 01 07 2011 17 20 01 07 2011 17 20 Mi S0Am WS Avg 10 min gt 8 ms M1 604m WS Ti 10 min gt 0 33 m4s 0807 2011 20 00 0807 2011 20 00 Mi 604m WS Avg 10 min gt 8 m s M 1 60m WS Ti 10 min gt 0 33 m1s 1607 2011 22 20 16 07 2011 22 30 M1 604m WS Avg 10 min gt 8 m s M1 60Am WS Ti 10 man gt 0 23 m s 28 07 2011 12 50 2807 2011 12 50 Mi 604m WS Avg 10 min gt 8 m s M1 604m WS Ti 10 min gt 0 33 m4s 01 08 2011 00 10 0108 2011 00 10 Mi 04m WS Avg 10 min gt 8 m s M 1 604m WS Ti 10 min gt 0 33 m s 1208 2011 14 00 12 08 2011 14 00 Mi 64m WS Avg 10 min gt 2 m s M1 604m WS Ti 10 min gt
40. ery useful for detecting all kind of configuration errors 9 1 3 Signal grid The signal grid enables the user to set up the signals when the auto detection is insufficient see figure 17 Always remember to go through the grid to ensure that all signals are set up properly Auto detection is a service not a guarantee Especially the Time adjustment fields located just above the grid see figure 17 are of vital impor tance as the values are used to correct the data to GMT 0 00 before they are persisted in the database Hence these values must reflect the original settings of the logger That is if the data is recorded in local time e g GMT 2 hours and with European daylight settings the selection will be GMT offset hours 2 and Daylight savings Central Europe If a channel is to be ignored uncheck the checkbox in the Imp column Otherwise Type Sub type Interval Unit and Height must be set up properly To change these columns right click or double left click the cell to be changed and choose the proper option Page 19 53 Document WindData Explorer User Manual Document Version 4 Wind data file viewer J Competence Centre Users enil Vestas Siting Universe Met stations Puerto Rico NRGSymphonie txt File content Text fields Converts into Conversion statistics Wind data file statistics Timestamp success rate 100 00 Data success rate z 100 00 amp Number of lines AP Number of lines wit
41. exist the normal signal which is imported using the WDI forms the basis of three other types of signals These are computed substituted and LTC Long Term Corrected signals 14 Select wind data To initiate a wind data analysis in the WDA data is selected by ticking off the met station s chan nel s and signal s that are of interest in the tree view see figure 27 It is possible to select and load signals from multiple met stations to facilitate comparisons of two or more met stations Notice that selecting a met station automatically selects all channels for the given met station but not all signals are automatically selected when a channel is selected Only signals of type Aver age and Standard Deviation are automatically selected while other signal types would have to be selected manually to be loaded i tg Bot nee fio paman rem ADM Jae y FP South Ethiopia id Sudan e Google lN q Loaded points 72 Point Map Satelite W 2953 3 km H 9018 17 km Vib Elittenay 1 2 2y 114335 a 60Am Wind Speed Vir WS Avg 10 min Vil WS Sd 10 min UD WS Min 10 min WS Max 10 min 60Bm Wind Speed VE 58m Wind Direction WES 47Am Wind Speed VE 47Bm Wind Speed 45m Wind Direction E 32Am Wind Speed amp VES 32Bm Wind Speed H E Om Temperature Apply Cancel Figure 27 The Select Wind Data task with selected channe
42. f the dashboards it is possible to see the data table used to generate the graphics by clicking the tab Table in the upper left corner 15 4 1 Distribution dashboard The Distribution dashboard shows the frequency histogram of the observations for the selected channel All channels can be selected for input while a wind direction signal must be selected to generate sector wise plots It is possible to see plots for each wind direction bin and or change the number of sectors see figure 53 When inspecting each individual sector the table in the upper right corner updates automatically showing both the MLE Maximum Likelihood Estimation and the WASP Weibull fitting along with measurement values By double clicking the graph browser in the right hand side of the screen it is possible to switch between e Histogram e Mean value rose diagram e Cumulative distribution function e Frequency rose diagram The Bin Width changes automatically to make the best Weibull fit however this can also be set to a specific value manually Tip Double clicking on one of the sectors in the frequency rose diagram will show data for this sector only 15 4 2 Gunshot dashboard The Gunshot dashboard allows for scatter plots within a rose diagram to identify trends in data that depends on the direction All signals loaded in the WDA can be selected as input and a direction signal must always be selected see figure 54
43. g can generate a standard report that describes the key features of a specific combi nation of a wind speed and wind direction signal It is always possible to keep track of all changes disabled or enabled data in the Change History 13 Data structure The WDA is working with a hierarchical data structure similar to the one used in the WDI The top level is site which is sorted by country A site can have several met stations and a met station can have several channels The lowest level under the channel is signal Again a channel can have several signals See figure 26 In the WDI a met station can have several configurations e g if an anemometer has been replaced a new configuration is needed to import the data This level has been eliminated in the WDA and data from multiple configurations is automatically merged EME Courtenay 4 Site El E Courtenay 1 2 2y 114335 a Met Station E DES 60Am Wind Speed a Channel i ide WS Avg 10 min _ Signal le WS Sd 10 min te WS Min 10 min i eff WS Max 10 min DEM 60Bm Wind Speed E FEN 58m Wind Direction E FEN 47Am Wind Speed H JEE 47Bm Wind Speed H ER 45m Wind Direction E CES 32Am Wind Speed ER ES 32Bm Wind Speed H JE ES Um Temperature Figure 26 The hierarchical data structure in the WDA has four levels site met station channel and signal Page 28 53 Document Document Version 4 WindData Explorer User Manual In the WDA four basic types of signals
44. h the FAQ Clicking the links will open a browser outside the WDE To post questions or reply answers it is necessary to be registered as a user Enter www winddataexplorer com in a browser and click Register in the menu on the right hand side From the same page it is possible to log in Page 10 53 Part III WindData Importer Document WindData Explorer User Manual Document Version 4 6 Introduction The WindData Importer WDI module serves as a common repository of all wind data It enables users to import configure and validate data 7 Interface overview The main WDI interface consists of two panels the Map panel to the left and the Met Station panel to right as shown in figure 4 The map panel is described in detail in the WDE Framework User Guide o r J WindData Explorer e mea File Tools Help WindD ata Welcome WIND IT MEANS THE WORLD TO US Vestas da m Met Stations temo ACI PAL Em H Q Australia Denmark 4 0 hda Terms of Use KR W 936 74 km H 18822 11 km Figure 4 WDI interface overview 7 1 Met Stations The Met Stations section in the main page contains a list of local met stations which are stored in a local database 7 1 1 Data hierarchy Each list of sites contains four levels e Country e Site Page 12 53 Document WindData Explorer User Manual Document Version 4 e Met station e Configuration A site can have several met
45. h valid timestamp BILI Number of timestamp conversion errors z0 Number of time adjustment errors z0 Number of malformed lines a B B 04 12 2004 16 00 2 10 12 2004 08 00 5 16 00 7 O second s Wind data statistics 1 CHlAvg Wind speed Mean m s 49 m Data success rate Number of missing values Number of conversion errors Number of configuration errors Number of values out of range Number of values out of database range z CH1SD Wind speed Std dev m s 49 m Data success rate Number of missing values Number of conversion errors Number of configuration errors Number of values out of range Number of values out of database range CH1Max Wind speed Maximum m s 49 m Nata anannnn esta Ann AN amp Figure 16 Conversion statistics Time adjustment GMT offset hours GMT offset min Daylight savings ENS o Bi om coco Sr o Signals ldx Imp Ch Headerte Tax field Type Sub type Interval Unit Height Converts into ql gt 0 4 Date 4 Time Stamp 04 12 2004 12 00 Timestamp Date and time dd MMAyyyy HH 12 4 2004 12 00 PM Ta js os pias SC a 2 mh fosso os vmdmperi dew tomates ne Jum fosse a Wifi porto O licmn mela Jon Gem 7 aje lorie i e oo oe er TBC ETE dom _ 027m mt 3 oie fo CCT test tnt Ju CTA a caso fom apena Seder fiomnaes m s soam Joens n WI fa fm ee Wndspesd Man iomegee mis sam ain Figure 17 Multi selectio
46. hear profile e Frequency Setting the Hub height parameter calculates the average wind speed at hub height interactively based on the wind shear value of the currently fitted profile as shown in figure 55 where the wind speed has been extrapolated to 80 meters T Wind Shear Options Met Station als Wind Shear Profile Met Station Courtenay 1 x M1 60Am WS Avg 10min M1 60Bm WS Av y M1 58m WD Avg 10 min y Power Law MW Hub Height m I Displacement m Sectors Sector so 12 z fa Chart Table Charts la Vertical Wind Shear Frequency M1 58m WD Avg 10 min 20 E 30 Height m Marin of Year Directional Wind Shear M1 58m WD Avg 10 min Figure 55 The Wind Shear dashboard fits a power law or log law profile to the selected data and calculates the wind shear coefficient It is possible to deselect a wind speed signal if it should not be included in the analysis Several other graphs like Diurnal Wind Shear Annual Wind Shear and Directional Wind Shear can be selected by double clicking the graph in the graph list Wind Speed m s Extrapolation of time series data In the Wind Shear dashboard it is possible to create a new wind speed time series which is extrap olated to a user defined height The extrapolated signal is based on a wind shear signal and a base signal of type wind speed mean which is the signal that is sheared up The wind shear
47. lines Number of skipped blank lines Figure 20 Data import wizard Step 3 Please inspect the statistics before clicking Next to continue to step 4 9 4 Data import wizard Step 4 In this step the data is stored in the local database New wind data import step 4 of 4 Data storage Site WindData Explorer site Met station WindData Explorer met station Data storage control Ready to start storage of wind data file data Store as new configuration Overwrite existing configuration WDA changes will be lost sat Progress Min timestamp Max timestamp Time span JACompetence Centre Users lenil Vestas Siting Universe Met stations Puerto Rico NRGSymphonie bd 04 12 2004 16 00 10 12 2004 08 00 5 16 00 Figure 21 Data import wizard Step 4 Storing the data in the database is the most time consuming process for the computer so please be patient When the storage is complete click OK in the dialogue Click Done to complete the wizard and the new configuration will show under the met station in the tree view Page 22 53 Document WindData Explorer User Manual Document Version 4 9 5 Import WindPortal data The WDI is able to import data from NRG WindPortal typically windportal com and before initi ating the import with WindPortal data some input is required by clicking the module menu item WindPortal Settings see figure 22 jf NRG WindPortal Settings E mail Figure 22 NRG
48. ls and signals marked In this case the search field has been used to find the met station A map shows the geographical location of all the met stations in the local database Press Apply lower right corner to load the selected signals Once data has been loaded the main wind data analysis window appears as shown in figure 28 Page 29 53 Document WindData Explorer User Manual Document Version 4 Tip The WDA processes data in the computer s RAM A warning will appear if too large a data set is selected Freeing memory by closing other applications could boost the WDA performance and allows larger data sets and more signals to be loaded 15 Analyse wind data The Analyse Wind Data main window see figure 28 appears when data has been loaded The main window consists of buttons to open six so called dashboards in the upper left corner the Time Series section with graphs and table view of data the filter section and the signal list Sections 15 1 through 15 4 describe the functionality in the Analyse Data task in the WDA Analyse Wind Data 1973935 ed Pq Range All y R M1 Courtenay wi MINT MIL um Wind Speed mis IIH EREE Figure 28 The default view when data has been loaded into the WDA The main window consists of dashboards the time series window filtering functionality and the signal list 15 1 Time series The time series window can display the data plotted
49. m Wind Speed Ti iimis M1 60Am Wind Speed Sd 10 mane M1 60 Am Wind Speed Avg mie Figure 51 A substitution signal is saved by clicking the Save Signal button in the WDA main window Before this button is clicked the substitution signals have not been saved this is indicated by the italic type in the signal list 15 4 Dashboards When doing wind data analysis there are a number of standard plots tables and statistics that need to be generated for each data set To simplify and speed up these tasks some of the most frequently used plots are available in the following quick launch dashboards e Distribution dashboard e Gunshot dashboard e Wind Shear dashboard e Statistics dashboard Page 41 53 Document WindData Explorer User Manual Document Version 4 e Turbulence Intensity dashboard e Scatter Plot Buttons to open the dashboards are located in the upper left corner of the WDA main window and seen in figure 52 One or more dashboards can be open at the same time whilst using all the functionality in the main WDA window If the user disables points in the time series plot or by the use of filters the content of the open dashboards will adjust accordingly in real time MISSA Figure 52 Buttons to launch the six dashboards in the WDA From left to right Distribution Dashboard Gunshot Dashboard Wind Shear Dashboard Statistics Dashboard Turbulence Intensity Dashboard and Scatter Plot Tip In most o
50. n is supported using Shift click or Ctrl click However to ignore multiple signal Shift must be kept pressed down until the check boxes have been ticked or unticked The Header text Text field and Converts into columns are non editable Their sole purpose is to help the user set up the signal grid It is possible to browse through the data lines thereby changing the information in the Text field and Converts into columns by clicking the blue arrows located just beneath the grid 9 1 4 Configuration templates If a file requires the same or similar set up the grid configuration can be saved as a template To do so click the E icon located in the bottom left corner see figure 18 and save the file Page 20 53 Document WindData Explorer User Manual Document Version 4 Figure 18 When the signals have been set up properly click the Detect channels icon in the lower left corner to set up the channel numbers automatically Next time the configuration is needed click the located just next to the icon and locate the proper template file 9 2 Data import wizard Step 2 In step two it is possible to add various optional information Although filling in the information is optional one should always seek to fill in as much information as possible New wind data import step 2 of 4 Channels Site Datan Met station Datan_Jaibo E Serial Scale Boom is top Boom Height Device name number factor Offset ty
51. on Site M1 60Am WS Avg 10 min 28 August 2010 27 August 2012 2 years Reference 100m WS Ref Avg 10 min 02 January 2000 30 September 2012 12 74 years Time Lag WD Delta Aggregation Created 00 00 00 276 0 deg No 06 12 2012 10 51 31 Time Lag is subtracted reference sample times for maximum correlation with site data WD Delta is substracted reference wind direction for alignement with site wind direction a simple counter clockwise rotation Prediction LTC vs Site Correlation and error statistics of the concurent long term corrected wind speed signal compared and on site wind speed signal R Square R SE m s MAE Type Sample 457 676 2 836 2 224 Weekly Averages 83 7 915 0 627 0 517 Monthly Averages 81 0 90 0 0514 0411 X lt Back Save gt Figure 66 The model selection step of the LTC procedure The software automatically calculates results for four models The user selects a model by clicking on it in the list The results for the selected model can be inspected in the Report Statistics Time Series and Density panes When the user has decided on which model to save this model is selected and the Save button in the lower right corner is clicked are saved as graphs and tables under all other tabs are temporary Subsequently the LTC signal exists under the site signal channel and can be used for e g AEP calculations 18 Reporting
52. pan in which the auto substitution rule is valid Furthermore the user has the option to make the auto substitution rule replace in other base signals When clicking OK the auto substitution rule is created and the main window is updated accordingly the time series graph s is are updated and the list with substitutions in the upper right corner now holds the auto substitution rule oF 3t Pal a gt Range a Figure 48 The Create Auto Substitution Rule button which is located in the upper left corner of the Time Series Substitution main window Manual replace In order for the Manual Replace feature to be enabled two signals have to be added to the time series graph s and a period must be selected note that a single 10 min data point is selected if the time series vertical cursor bar is active When these two criteria are fulfilled it is possible to do a manual replace by either right clicking the graph and selecting Manual Replace or by clicking the manual replace icon Doing this replaces the substitution signal with the second signal for the selected period oF E a Pal 3 amp gt Range Figure 49 The Manual Replace button which is located in the upper left corner of the Time Series Substitution main window Create and remove substitution signal It is possible to create a new substitution signal by clicking the Create Substitution Signal icon or by right clicking a graph an
53. pe mounted direction 97m NRG 40 Anem m s 838 0 77671 0 2448 Mia Unknown pero postem mto Jor st oem Fo A O O eo remos fr avi ice ion 22m NRG 40 Anem m s 844 0 77095 0 2359 Unknown Unknown E Channel 1 details Installed by Installed at 6 26 2012 Figure 19 Data import wizard Step 2 Alternatively the WDI can read the information directly from a configuration file To do so click the icon located beneath the grid to the left However the supported file formats are limited At the time of writing only Nomad 2 configuration files are supported When finished click Next to continue to step 3 9 3 Data import wizard Step 3 Click Start to initialise the conversion of the data file s see figure 20 When the conversion has finished click Ok and conversion statistics for each file is shown in the upper grid while conversion statistics for each channel is shown in the lower panel Page 21 53 Document WindData Explorer User Manual Document Version 4 New wind data import step 3 of 4 Data conversion Site Datan Met station Datan_Jaibo Data conversion control Data conversion of wind data files is completed Wind data file statistics Timestamp success rate 100 00 amp Data success rate Number Number of lines with valid timestamp z 101748 Number of timestamp conversion errors po Number of time adjustment errors Number of malformed
54. re 7 Add site visit report dialogue To add a file click the icon locate the file and click Open Before clicking OK the Notes field must be filled out Besides the report name the field can contain other information relevant to the report 8 3 Delete a site a met station or a configuration To delete a site a met station or a configuration right click the target in the field with met stations to open the context menu and click the icon see figure 8 It is possible to delete any configuration site or met station in the local database 8 4 Delete and view a site visit report Right click a site and click the amp icon Select the target report in the dialogue To delete the report click the icon To view the report first click the icon to display the edit site visit report dialogue then click the il icon Page 14 53 Document WindData Explorer User Manual Document Version 4 pe Edit met station E x Femove met station Show on map a 2 Import data B el Upload to server Export to file s Figure 8 Remove met station Site name Site visit reports Es 6 25 2012 VESTAS emher Datan site visit report Figure 9 Edit site dialogue 8 5 Adda met station To add a met station select a site and click the 4 icon To create the met station the General information must be provided while all fields in the Details section are optional However it is strongly re
55. rection Lte Avg Y OK Cancel Figure 46 The main Time Series Substitution window Auto substitution The auto substitution feature can be used to automatically replace data in the base signal s if the base signal s is either Disabled Missing or Enabled To create an auto substitution rule either right click a times series graph and choose Auto Replace or click the Create Auto Substitution Rule button in the upper left corner Doing this will bring forth a window where the auto substitution rule is defined see figure 47 The user must define on which substituted signal the rule applies Replace In which signal the Page 39 53 Document WindData Explorer User Manual Document Version 4 Create Substitution Rule Create Substitution Rule spose M1 Gm WS 60m Chi Subst Ch2 Sd 10m gt sno M1 60Bm WS Sd 10 min Replace 9 Disabled D Missing El Enabled From 7 28 09 201 00 00 4 To 7 30 09 201 23 50 Apply Also To 7 M1 60m WS 60m Ch1 Subst Ch2 Avg 10 M1 60Bm WS Avg 10min Figure 47 An auto substitution rule is created by defining on which signal the rule should work what signal that should be used as replacement signal when the rule should apply and what should be replaced base signal is spliced with Using what criteria triggers a substitution typical scenario Disabled and or Missing and the time s
56. rmal steps press Shift Right Left or for small steps press Shift Ctrl Right Left Press Del Delete to go to Disable Points directly or right click the selected time frame to get the selection menu shown in figure 38 or click the Disable Points image button seen in figure 39 Page 33 53 Document WindData Explorer User Manual Document Version 4 Dal Add Graph Ctrl N Py RemoveGraph Ctri X sh al gt A Remove Signals Zoomin a Zoom Out Move Up ctri Up 3 MoveDown Ctrl Down 9 Enable Points Ins Disable Points Del Save As Save All As Ctrl S Copy Copy All Ctrl C Signal Color Theme Properties Figure 38 The selection menu that appears when a marked period is right clicked Figure 39 The Enable Points and Disable Points image buttons which are active when a period is selected in the time series graph view Click Disable Points and the screen shown in figure 40 will appear By default all signals that are loaded in the graphs are selected Before any changes can be performed the user must Select change reason It can either be Custom where a description of the change reason is required or Predefined where a predefined change reason is chosen from a drop down list Once a change reason has been selected the Disable button will be activated The change reason will be written to the log and saved with the data set for later use for example if a new Wind Data
57. s Y E Y Contains Y C Y Contains Y Contains YEVN YN YN YN YN Y Eq Y Eq Y Eq Y M1 60Am WS Avg 10 min 60 00m Wind Speed Avg 16 07 2010 00 00 00 19 09 2012 00 50 218 7 70 040 2470 348 900 103 180 114629 11 155 M1 60Am WS Sd 10 min 60 00m Wind Speed Sd 16 07 2010 00 00 00 19 09 2012 00 50 218 063 000 930 039 997 114 335 114 629 00 M1 60Am WS Ti 10 min 60 00m Wind Speed Ti 009 000 1 23 007 900 103 180 114629 11 155 M1 60Bm WS Avg 10 min 60 00m Wind Speed Avg 16 07 2010 00 00 00 19 09 2012 00 50 218 764 040 2540 349 900 103 180 114629 11 155 M1 60Bm WS Sd 10 min 60 00m Wind Speed Sd 16 07 2010 00 00 00 19 09 2012 00 50 218 062 000 930 039 997 114 335 114 629 00 M1 60Bm WS Ti 10 min 60 00m Wind Speed Ti 0 10 000 113 007 900 103 180 114629 11 155 M1 58m WD Avg 10 min 58 00m Wind Direction Avg 16 07 2010 00 00 00 19 09 2012 00 50 218 175 89 0 00 359 00 9348 887 101 681 114629 12 654 M1 47Am WS Avg 10 min 47 00m Wind Speed Avg 16 07 2010 00 00 00 19 09 2012 00 50 218 732 040 2410 334 901 103 224 114629 11 111 M1 47Am WS Sd 10 min 47 00m Wind Speed Sd 16 07 2010 00 00 00 19 09 2012 00 50 218 065 000 850 041 997 114 335 114 629 00 M1 47Am WS Ti 10 min 47 00m Wind Speed Ti 010 000 115 007 901 103 224 114629 11 111 M1 47Bm WS Avg 10 min 47 00m Wind Speed Avg 16 07 2010 00 00 00 19 09 2012 00 50 218 7 29 040 2450 3 34 901 103 224 114629 11 111 M1 47Bm WS Sd 10 min 47 00m Wind Speed Sd 16 07 2010 00 00 00 19 09 2012 00 50 2 18 065 0
58. signal is created by clicking the Create Shear Signal button seen in the upper Page 44 53 Document WindData Explorer User Manual right corner of the Wind Shear dashboard see figure 55 Document Version 4 In the dialog shown in figure 56 the user selects which wind speed signals to include in the calculation of the wind shear signal and the length of the smoothing window The smoothing window defines the width of an exponential moving average applied to the shear signal to eliminate outlier values Input Wind Speed Signals 4 M1 604m WS Avg 10 min M1 60Bm WS Avg 10 min M1 4 Am WS Avg 10 min 4 M1 47Bm WS Avg 10 min M1 232Bm WS Avg 10 min Displacement m Smoothing Window hours 120 gt Cancel OK Figure 56 The Compute Shear Signal dialog In this case the M1 32Am signal has been deselected and the smoothing window is the standard 12 hours Once the wind shear signal has been created the extrapolated signal can be created by clicking the Extrapolate Signals button just below the Create Shear Signal button see figure 55 In the window that appears see figure 57 the user defines the base signal s that is to be extrapolated the extrapolation height and the shear signal Clicking OK generates an extrapolated signal for each of the selected base signals The type is inherited from the base signal The new extrapolated signals are added to the signal li
59. st in the main WDA window like any other computed signal and must be saved manually if the signal is to be used later on for e g AEP calculations Mind speed Extrapolation find Speed Signals to Extrapolate M1 604m WS Avg 10 min C M1 604m WS Sd 10 min C M1 60Am WS Ti 10 min C M1 608m WS Avg 10 min C M1 608m WS Sd 10 min C M1 60Bm WS Ti 10 min nat AT Roe all Ber TN mam Extrapolation height m aa Shear Signal IMT 60m Shr Comp 10 min Create n Ok Figure 57 The Wind Speed Extrapolation dialog In this case the M1 60Am WS Avg signal is extrapolated to 94 metres using the M1 60m Shr Comp 10 min shear signal Page 45 53 Document WindData Explorer User Manual Document Version 4 15 4 4 Statistics dashboard The Statistics dashboard has three tab pages e Signal Details see figure 58 shows the main descriptive statistics and other basic information like type measurement height duration and availability for each signal loaded in the WDA e Temporal see figure 59 shows different plots with temporal aspects such as trends over the year and hour x month plot e Availability see figure 60 shows the data recovery throughout the measuring campaign IT Statistics i Signal Details Temporal Availability Drag a column here to group by this column Label Height Type Func From To Dura Mean Min Max SD Cover Available Posible Disabled Contain
60. stations and a met station can have several configurations A new configuration for a met station should be used if for example a new instrument is added or new settings are applied to the logger The site is placed in the country to which most met stations belong 8 Manage met stations The WDI main page Manage Met Stations provides the ability to manage met stations The main features are described in the following chapter 8 1 Search for existing data Instead of locating the data manually it is possible to search by keyword s in the search field as shown in figure 5 ar pa 118 Wind o ooo O E Denmark E WindData Explorer site S A WifidData Explorer met station Figure 5 The search is performed immediately and it is possible to search for credentials as well as project and met station names 8 2 Create a site and add a site visit report Before any data can be imported a local site must be created see figure 6 The process is initialised by a click on the 4 icon located above the field with met stations Page 13 53 Document WindData Explorer User Manual Document Version 4 Site name Site visit reports Figure 6 Create site dialogue Enter the site name If any site reports are available attach them by clicking the 4 icon Site visit report CA Users emher Desktop Datan site visit report pdf Datan site visit report Date Monday June 25 2012 2 34 PM User WESTAS emher Figu
61. teristics of the wind regime The models based on sector wise linear regression also contain a sector wise wind direction correction factor which describes how to get from a reference wind direction to a site wind direction for a given sector The LTC calculator automatically takes away reference wind speeds below 2 m s in the LTC calcula tions The wind direction can often be unreliable when the wind speeds are below 2 m s as the wind vane can shift a lot because of the low wind Save LTC results When it has been determined which of the four models that suits the selected data the best the LTC result is saved by clicking the Save button in the lower right corner The result is a LT C time series with the same duration and frequency as the reference signal Only the results under the tab Report Page 51 53 Document WindData Explorer User Manual Document Version 4 Long Term Correction Data Selection Model Selection px Computed LinReg Pred R Square 0 65 SE 2 05 Model R Square 0 65 SE 2 05 LinReg w Noise Pred R Square 0 46 SE 3 00 Model R Square 0 65 SE 205 Sector LinReg Pred R Square 0 66 SE 2 02 Model R Square 0 66 SE 2 02 Sector LinReg w Noise Pred R Square 5 84 Model R Square Saved Pred R Square lt NA gt SE lt NA gt Model R Square NA SE NA Report Statistics Time Senes Density x Sector LinReg w Noise Input Signals Signal Type Signal Description Stan Date End Date Durati
62. up the signal grid correctly Instead of opening the data file in a piece of third party software the Wind data file viewer is recommended see figure 15 It is accessed by clicking the icon located near the upper right corner Page 18 53 Document WindData Explorer User Manual Document Version 4 Header line numbers Header field separator Mumber decimal separator Tabulator S Data starts at line number Data field separator Number group separator Tabulator Logger Information Model 7 Serial 0650 Channel E 1 4 IE Figure 14 The set up parser dialogue Wind data file viewer C Users emher Desktop Test Data Test Files NRG Symphonie 050530tbn 0650 Pattada M2 030524 050530 bd File content Text fields Converts into Conversion statistics z SDR 5 3 1 re Logger Information Model z Serial 0650 Hardware Rev 008 007 000 z Site Information z Site 0650 ul Figure 15 Wind data file viewer The Wind data file viewer consists of four tabs The first tab displays the file content like any other file viewer In the second tab the data is split into cells by use of the current parser settings parser settings can be changed manually please refer to section 9 1 1 while the third tab contains the converted data The fourth tab contains conversion statistics Final statistics can be inspected even before the import has begun see figure 16 This tab is v
63. uted signal creates a new computed signal see figure 15 3 1 Save signal saves a com puted signal to the database and Create substituted signal creates a new substituted signal see section 15 3 2 Signals s A Za search Si z E lo AS SCCI TCS ae ee lt a bear te tame a o eae ae tyr Son np ny AT E FAS e a A E LIE Pp masa A Te HS Lan mm fata M1 606m Wind Speed Ti 10 mane M1 606 10 minutes M1 606 10 man M1 604 10 minutas dr M160A 10 mine Computed Signal MI 60m Wind Speed Average ws Comp m s 10 min Formula A B 2 A MI 60Am WS Avg 10 min B M1 60Bm WS Avg 10 min Saved No zir M1 604m Wind Speed Avg 1 mine le M1 58m Wind Direction Avg 10 mine axo Figure 43 The signal list section The list shows all loaded signals in the WDA An unsaved computed signal is written in italic type Star indicates if a signal can be ticked to be a favourite signal Above the list of signals are the buttons that control functionality associated with the signals from left to right are Remove signal Create computed signal Save signal and Create substituted signal A sort and search functionality is located above the buttons 15 3 1 Computed signals It is possible to create signals in the WDA so called computed signals by pressing the Create com puted signal button above the signal list
64. wer right part of the window The time series graph s can only hold either one or two signals where the first signal is the substitution signal and the second optional signal is the signal from which data is replaced In the upper right corner there is a list of the applied substitutions where it is possible to revert substituted periods In the following the main functionality of Time Series Substitution will be described Page 38 53 Document WindData Explorer User Manual Document Version 4 M1 60Am WS Avg 10 min M1 60Am WS Sd 10 min Name 60m Ch1 Subst Ch2 Figure 45 This dialog appears when the Create substituted signal is clicked The user must select the base signal for the time series substitution and decide if substitution should be done in any other signals besides the base signal lf Time Series Substitution PEER ei BG BVA BD Range X Substitution Signals Substitution items 20 M160m WS 60m Ch Subst CH2 Avg 10 min act z 15 lt Nov 2011 Jan 2012 Mar 2012 lay 201 Jul 2012 Sep2012 il si oe 5 o lt Prev 1300 Nat i Signals s 24 search BE M1 7m Temperature Avg 10 minutes M160m WS 60m Chi Sube Ch2 Sd 10 min s M1 60Bm Wind Speed Avg 10 minutes st M1 60Bm Wind Speed Sd 10 minutes M1 60Bm Wind Speed Ti 10 mimes M1 60Am Wind Speed Avg 10 minutes M1 60Am Wind Speed Sd 10 minutes M1 60Am Wind Speed Ti 10 minutes M1 58m Wind Di
65. window which will be disabled too e The Extreme TI Detection filter searches for false extreme TI events by identifying data points where TI and wind speed are above a user defined threshold while the wind speed signal Page 36 53 Document WindData Explorer User Manual Document Version 4 is increasing the algorithm looks at previous current and the next time stamp Like the custom filters it is possible to combine one or more predefined filters using logical operators It is also possible to combine custom filters and predefined filters 15 3 Signal list The Signal List is located in the lower right corner of the WDA main window see figure 43 It consists of a list of all the signals loaded in the WDA including any computed signals or substituted signals that may have been created In the signal list every signal is described with parent met sta tion height type and measurement function Furthermore it is stated if a signal is computed It is possible to set a saved signal as a favourite signal by clicking the star icon A favourite signal is a manual marking of a signal to remember which signals that are used for e g annual energy produc tions estimates The marking can be reversed at any time Above the list of signals the buttons that control the functionality related to signals are located The Remove signal button deletes a signal from the list only computed signals can be deleted Create comp
66. y rose 7 Change history Long term correction Document Version 4 Figure 67 The WDA Report Generator The user selects a signal pair and which sections to include Clicking the Generate button will generate the report automatically Page 53 53

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