USER MANUAL - seb barlassina
Contents
1. TVLISIG 99 99 9 9 29 WAON va WAON u XXXXXXXX 92 HON ISHL OVZZN lH zu eld 214 XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX 22 WAON NOILONOA UOZZN TU OVIZN TY MOTZN TY lt II TA lt ZI Tu zn Tu lH NOISL Tu TH SAVIAN Lld 014 64 84 14 94 vd d 24 bd S XX X XX X 210 213 913 UI XX X UN xx x UI UI XX X lt II zn gt II 8L ISNV Gla ela 1 S XX XX S XX XX S XX XX ZZN UU X XXX X XXX X XXX X XXX dn LAS WITL VI NITL WL NOISL WITL u TZN WZ SZ LZ 97 8L ISNV TOHSSHHIL Ola 64 83 13 93 v3 3 ba ATT ISNW 222222 V AKKKK XX XXX SANTYVA LSVULNOO AWV IdSId un un ul TWNIWON dn Las 90 va La z 14 DISPLAY AND PROGRAMMING SEB Divisione Elettronica e Sistemi2. E ss ww yy 2200 L 4 2999 1 Did ANIL Oud Did LOL 224 224 Izd 124 224 124 224124 SAHLNNAOD GU 8H 14 94 Sd vd cy ed Ly 000909090 83 ss wu yy AA AA 9914 AA AA pora 5IG AA eurpn Ta TH Ta Ta Ta Ta Ta 920 Sco 1449 tco eco 49 020 AA TOIA un un un un TH on Ta an Ta en Ta oI Ta Ta PI Tal 20 TH 610 810 110 910 SLO 1419 0 419 ur ur uI 9 XXX XX 5 XXX XX uuuuuuuu S MM MM gt DT ZZN TZN 00222220 Gil TH TO TH TI TH IX Ta Ta Ta 20L L Ta Ta LOY Ta LOV Ta TH SINHIAH LLO 00 60 80 10 90 so vd ZO LO XX XXX O XX XXX 5 XX XXX XX XXX SHAJASVAIN oes IX 995 TA uz TX uz Tu NYGHaNWI Sid tld ld X Lld A X X A A A X AKKAK X X 801415 XX XX 70 XX XX Z1 Xx xXx In XX XX II Xx xx on xx xx qdn xx xx en XX XX OI XX AYASVAN Old 6d 8d 14 94 Sd td d 99I0 AA p9IG SALVIS AA AA AA STWLIOIG EN CN LN 909 pu Za SOLVLS EN 222 CN LN 5013235 5013235 SOLWLS SOLVIS SINHAH 9 224 Izd IOHSWHHIL TUNDIS SAYASVIN c
3. Sed DIVISIONE ELETTRONICA E SISTEMI 2 GENERATOR OUT OF STEP PROTECTION RELAY USER MANUAL P501D810 September 2004 SEB Divisione Elettronica e Sistemi INDEX INDEX 1 GENERAL CHARACTERS TIE Sii 1 1 1 Threshold OPTION St 3 2 FRONTPANEL KENS aliante 7 FRONT PANELLED SIGNALING e 8 4 PROGRAMMING AND TEST rici dd tod 9 4 1 How to program the protection 9 4 2 Howto modify a visualized parameter 10 43 AROS OU c C 10 4 4 S 2 Ie nei o etn ot ini nino d t ned t petra 11 5 DISPLAY AND PROGRAMMING cestas 12 del display 2 fasi den easi tees ete Tae dai i Pa ea 12 5 2 2215 225 522 25 5 22 26 8 A A A unte te t 13 5 3 Address time figure 2 calati alianti iii dizione 16 54 Protection insertion 17 5 5 Nominal values set up figure 3 2 4 2 2 4 17 5 6 Thresholds and time delays set up figure 3 18 5 6 1 Out of step polygonal characteristic esses 18 5 6 2 Out of step function enabling 20
4. 5 6 3 Voltage A AAA 21 57 Output relays programming figure 3 22 5 8 Digital inputs function programming figure 4 24 59 Parameter values visualization figure 4 25 5 10 Events fig re 4 uoles eoo Qo Qoa Qo 26 5 11 Trip co nters figure 4 53 za 29 67 INS TALEATION oratorio lod 30 enen ali 30 0225 TP 31 63 Relays R3 and R4 Signaling Command set up 36 64 RS485 serial communication 36 A TECHNICAL 38 8 TABLES a 40 Information printed in this manual subject to change without prior notice This manual must not be reproduced in whole or in part in any form or by any means without the express written permission of SEB Divisione Elettronica e Sistemi SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS 1 GENERAL CHARACTERISTICS The protection relay ZFP8N is designed to perform the following functions Generator out of step protection ANSI 78 The operation of the ZFP8N protection relay is based on the impedance measurement method the impedance vector is computed from the positive sequence components of the measured voltages and currents the protection relay verifies the absence of negative sequence components of the curr
5. If one or more parameters are modifiable on the first of them will appear a blinking cursor If no parameters are modifiable no blinking cursor will appear 2 MODIFY THE PARAMETER pressing the arrow push buttons and when two parameters are modifiable the push button allows to point out the parameter to be modified the selected parameter will blink gt when numerical parameters are pointed out the push button allows to select the digit to be modified increasing of the parameter a the digits are increased by 1 unit b the other parameters are presented following the selection list 3 PRESS ENTER to end parameter modification session The modification session is ended and the parameter stops to blink NOTE if a numerical parameter is selected out of the accepted range as shown in Table A when the push button ENTER is pressed for few seconds an error message will be displayed as Data Error and the parameter will be displayed again with the former value 4 3 Reset When the push button RESET is pressed the protection relays returns to the standard condition e reset of glowing LED s e drop off of tripped relays e reset of any parameter changed but not confirmed parameters are shown as confirmed at the end of the last programming session 10 SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST e display on STANDARD MODE ref A1 par 5 1 4 4 Test of output relays When the output relay
6. following information can be visualized as defined by set up e Protection function ANSI code the display shows the ANSI code of the protection function ON TRIP CONDITION When a trip condition occurs the protection relay visualizes the TRIP message that includes the polygonal zone interested by the protection intervention the displayed messages are as the following TRIP TRIP PZI PZ2 where e PZ1 trip for out of step related to ZONE1 of the polygonal characteristic e PZ2 trip for out of step related to ZONE2 of the polygonal characteristic The information of the trip as well the glowing of the related LED s is displayed until the RESET push button is pressed If a new trip condition occurs the displayed information will be updated information related to previous trips are recorded in EVENTS memory FAULT CONDITION When a permanent or temporary fault condition is detected by the self diagnosis module the following message will be displayed FAIL F PILOT Detected fault condition on pilot wire the function related to DIG1 digital input is suspended Corrective action verify pilot wire short or open circuit The string eeeeeeee can be 12 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING HARDWARE Detected fault condition on hardware or software resources of the protection relay all functions are suspended Corrective action replace the protection relay and contact SEB
7. no START or TRIP conditions are activated NORM OFF normally de energized energized status on activation NORM ON normally energized de energized status on activation F2 RELAY ACTIVATION ON OUT OF STEP CONDITION programmable Programming of the activation of the output relay when the maximum number of allowed out of step occurrences is exceeded counter NZ1 or NZ2 exceeded for ZONE 1 or ZONE 2 of the polygonal characteristic F2 F3 R1 PZ1 R1 PZ2 XXXXXXXX XXXXXXXX The parameter is selectable as the following START instantaneous output relay R1 activation when the power swing condition is detected TRIP output relay R1 activation when the counter NZ1 or NZ2 is exceeded NONE no activation related to the function When the START selection is programmed the output relay will be activated every time the impedance vector is inside the polygonal characteristic this functionality is useful for test purposes F4 RELAY ACTIVATION ON POWER SWING CONDITION programmable R1 TSIGN XXXXXXXX Programming of the activation of the output relay when the power swing condition is detected the first time the impedance vector enters in the polygonal characteristic and the time delay TLIM starts The parameter is selectable as the following 22 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING START instantaneous output relay R1 activation when the power swing condi
8. post sales service 5 2 Visualization structure A1 ANSI 78 B1 B2 B3 B4 B5 B6 B7 ZFP8N PROTOCOL BAUDRATE NR RELAY SER NR VERS SW dd mm yy YYYYYYYY nnn XXX ZZZZZZZZ 22 77 hh mm ss C1 INSERZ Insertion qadaadad STAR DELTA SET UP NOMINAL Nominal data VALUES FIG 3 THRESHOL THRESHOLD set up SET UP FIG 3 RELAYS OUTPUT relays set up FUNCTION FIG 3 DIGITAL DIGITAL INPUTS set up INPUT FIG 3 J1 CONFIRM PROG MEASURES SIGNAL Display of SIGNALS and OUTPUT RELAYS status amp EVENTS STATUS FIG 4 EVENTS Display of EVENTS data FIG 4 COUNTERS Display of COUNTERS data FIG 4 Figure 2 13 DISPLAY AND PROGRAMMING SEB Divisione Elettronica e Sistemi eunBiJ y Bla OL 908d WHuI4NOO XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX LOdNI 9914
9. programming sessions and the date and time of the last confirmed programming session are not modifiable or resettable the information related to the last programming session are used to control unauthorized access The partial counter can be modified following the standard set up procedure for parameters as described at paragraph 4 2 the partial counters are immediately modified in the memory the recorded values are immediately resetted without the need of the programming confirmation R6 TRIP COUNTERS PZ1 PZ2 PZ1 PZ2 PZ1 eeee T eeee PZ1 72 72 T eeee T eeee Display of the partial P and total T counters of the TRIP condition related to each zone PZ1 or PZ2 and globally ZONE1 ZONE2 referred to PZ1 PZ2 When the value exceed 9999 the counter starts again from 0000 R7 R9 TOTAL PROGRAMMING SESSIONS AND DATE TIME OF THE LAST PROGRAMMING SESSION TOT PRG DATE PRG TIME PRG eeee dd mm yy hh mm ss Display of the number of confirmed programming sessions from the factory set up and the date and time of the last confirmed programming session 29 SEB Divisione Elettronica e Sistemi INSTALLATION 6 INSTALLATION 6 1 Supplied kit RK VERSION 19 rack installation the proper rack is supplied by SEB e protection relay module ZFP8N with 2 rear sockets e transparent front panel with push buttons e transparent front panel without push buttons e blister with items 1 2 3 4 5 MR VE
10. 01 5 ZONE 1 and ZONE 2 TSIGN Activation time of the output relay signaling 0 02 99 99 s 0 01s the first out of step condition I1 Positive sequence minimum current 0 10 5 00 In 0 01 In threshold Negative sequence overcurrent threshold 0 05 1 00 In 0 01 In Residual overcurrent threshold 0 10 1 00 In 0 01 In Undervoltage threshold for voltage memory 0 05 1 00 Un 0 01 Un function Voltage memory time length 0 04 1 00 s 40 SEB DIVISIONE ELETTRONICA E SISTEMI UFFICIO COMMERCIALE Via Segantini 5 20825 BARLASSINA MB tel 39 0362 5669 1 fax 39 0362 556622 web www seb barlassina it mail to servizio clienti seb barlassina it
11. 2 CB1 Terminal inputs position REAR VIEW Figure 9 34 SEB Divisione Elettronica e Sistemi INSTALLATION Dimensioni meccaniche Case outlines Dima montaggio da incasso Flush mounting panel cut out Dimensioni frontali mini rack per incasso Mini rack front sizes flush mounting 198 2 x 177 4U mm 77 l L 101 5 0 3 35 N 4 fori 26 3 Raggio max 7 162 0 1 SEB Divisione Elettronica e Sistemi INSTALLATION 6 3 Relays R3 and R4 Signaling Command set up The protection relay is supplied with R3 and R4 relays configured as SIGNALING RELAYS with 2 change over output contacts with breaking capability equals to 0 2 A at 110 Vdc L R 40 ms 100000 operations Each and R4 relay can be configured as COMMAND RELAY with 1 change over output contact with breaking capability equals to 0 5 A at 110 Vdc 40 ms 100000 operations The new configuration is obtained with the following cabling 6 4 RS485 serial communication port The digital protection relay ZFP8N presents an insulated serial interface RS485 half duplex that allow the multi drop connection up to 31 protection units There are available 2 selectable communication protocols ref B2 par 5 3 When the STANDARD SEB communication protocol is selected the transmission speed is automatically selected between 300 to 9600 bauds and the protocol is ASCII HEX When the MODBUS communication protocol is
12. 3 R5 partial trip counters reset The programming sequence is the following 1 SELECT the visualization on display of the parameter to be modified using the arrow push buttons 2 ACTIVATE the PARAMETER MODIFICATION session depressing the ENTER push button and modify the parameter value 3 END the parameter modification session depressing again the ENTER push button 4 REPEAT the procedure from 1 to 3 for all the parameters required to obtain the new protection relay set up 5 CONFIRM the new protection relay set up at the visualization CONFIRM PROG Fig 3 ref J1 within 5 minutes depressing the push buttons ENTER and up to visualize YES and ENTER again to confirm NOTE The protection relay continues to operate using the previous set up until the new set up is confirmed as at point 5 above the visualization of the modified parameters before the new set up confirmation is only temporary to allow an easy definition of the new protection set up If the new set up is not confirmed within 5 minutes from the last pressed push button the protection relay visualizes again the previous set up the parameters set up that the protection relay is still using SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST 42 to modify a visualized parameter When the parameter to be modified is visualized on front panel display do the following sequence 1 PRESS ENTER to activate the parameter modification session
13. 9 Parameter values visualization figure 4 L1 L2 THRESHOLDS STATUS The actual status of the thresholds related to ZONE1 and ZONE2 is displayed For each threshold are displayed the threshold identification and the threshold status the status can show one of the following values ON active threshold OFF disabled threshold programmed OFF at ref E1 see par 5 6 1 OFF DIG threshold programmed active but disabled by a digital input actual status ref G1 G6 see par 5 8 Examples PZ1 PZ2 ON OFF DIG M1 M2 OUTPUT RELAY STATUS The actual status of each output relay is displayed for each relay the following information is displayed e relay identification R1 R2 R3 R4 e relay status ON activated OFF non activated Note that ON OFF do not necessary mean energized or de energized see ref G1 N1 N3 DIGITAL INPUT STATUS The actual status of each digital input is displayed 25 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING For each digital input the following information is presented e digital input identification DIG1 DIG2 DIG3 DIG4 DIG5 DIG6 e digital input status HI or LO P1 P15 MEASUREMENT DISPLAY The actual values of the measures and of the computed parameters are displayed the following information is presented 1 measured currents P4 P6 measured voltages P7 computed positive sequence current P8 computed positive sequence
14. B Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS For each characteristic s zone a separate counter is defined NZ1 NZ2 and each of them is increased when the impedance vector enters and leaves the corresponding zone For each counter a maximum number of out of step conditions can be independently programmed when the corresponding counter reaches the programmed value the protection relay will trip If the programmed value of the counter is not reached within the programmed TLIM time delay the protection relay will reset reset of NZ1 and NZ2 counters When the impedance vector enters in the polygonal characteristic for the first time a signaling output relay can be activated the time length TSIGN of the output relay activation is programmable Every out of step protection function can be programmed ON OFF or disabled with an external command through digital inputs Insertion of the protection relay At set up level ref chapter 5 4 point C1 it is possible to select the protection relay insertion as e STAR operations measuring the phase to earth voltages e DELTA operations measuring the phase to phase voltages Voltage memory function Power swings in the electrical network could cause on transient base the presence of a very low voltage where the measurement point The protection relay manages an undervoltage threshold U to detect this condition and to start up the voltage memory function the voltage memo
15. RSION mini rack installation e mini rack e protection relay module ZFP8N with 2 rear sockets e transparent front panel with push buttons e transparent front panel without push buttons e blister with items 1 2 3 4 5 Sacchetto BLISTER 1 8 screws to fix wire terminals of current circuits 2 n 4 screws to fix the relay rear socket on the 19 rack or on the mini rack n 2 screws to fix optionally the protection relay on the front of the 19 rack 3 n 2 knobs to fix the transparent front panel 4 8 washers to be used to fix wire terminals current 5 n 8 growers to be used to fix wire terminals current The knobs to fix the transparent front panel must be screwed through the panel the front panel itself the operation will create a screw thread in the plastic material and the knobs will never be missed 30 SEB Divisione Elettronica e Sistemi INSTALLATION 6 2 Cabling For the terminal numbers on the rear sockets please refers to next figure Current circuits It is suggested to terminate the current wiring using eyelet terminals Minimum suggested wire cross section 2 5 mm Voltage circuits It is suggested to terminate the voltage wiring using plug terminals Minimum sugge
16. auses in co operative protection relays systems PILOT WIRE FAULT MONITORING when the function is programmed the digital input DIG2 is used to control the correct functionality of the pilot wire Digital input DIG2 is always expected to be complementary of DIG1 input HI LO or LO HI to identify faults on pilot wire The fault condition is reported as detected by the self diagnosis module but the protection functions are not suspended only the functions related to DIG1 digital input are suspended as the DIG1 status cannot be longer considered as true When the function is activated the fault condition will be detected when the status of DIG1 and DIG2 are equals for more then 100 ms REMOTE COMMUNICATION the opto insulated serial port RS485 can communicate with a personal computer or a remote control and monitoring system equipped with an RS485 interface or with a standard RS485 RS232 converter It is possible to select the communication standard between MODBUS ASCII mode SLAVE or STANDARD ASCII 7 bit SEB All the set up and measured parameters can be transmitted on the RS485 communication serial port when communication is active LED REMOTE glows the operator on front panel can visualize the relay set up but changes of parameters are disabled ENTER and buttons disabled VOLTAGE MEMORY FUNCTION power swings the electrical network could cause on transient base a very low voltage at protection measurement point Th
17. dance is computed using the direct sequence voltage and current direct sequence impedance Example Q7 Q8 El Rl Zn El X1 Zn 2 012 0 750 Q9 Q18 MEMORIZED MEASURES ON EVENT The values of the measures or computed parameters at the event are displayed the values are expressed as relative terms In Un Q9 computed direct sequence current 11 Q10 computed direct sequence voltage U1 Q11 computed negative sequence current I2 Q12 computed negative sequence voltage U2 013 015 measured currents la Ib Ic Q16 Q18 measured voltages Ua Ub Uc Examples Q9 Q14 Q20 E3 I1 E3 02 Uc lx 3041 In 0 003 Un 1 001 Un 019 Q24 DIGITAL INPUTS STATUS ON EVENT El El DIGI vv DIG2 vv DIG3 vv El DIG4 vv DIG5 vv DIG6 vv The status of the digital inputs at the event are displayed The parameter vv can assume the value HI or LO SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Q25 Q26 DATE AND TIME OF THE EVENT El Date El Time dd mm yy hh mm ss The date and time of the event are showed 5 11 Trip counters figure 4 In this section are displayed the total and partial counters of the trip conditions related to the out of step protection intervention for each zone ZONE1 or ZONE2 ZONE1 ZONE2 and the numbers of programming sessions with the date and time of the last confirmed programming session The total counters the number of confirmed
18. e Elettronica e Sistemi FRONT PANEL LED SIGNALING 3 FRONT PANEL LED SIGNALING POWER green FAIL red REMOTE red PZ1 red PZ2 red BLK red auxiliary supply available fault condition detected by SELF DIAGNOSIS software or by PILOT WIRE FAULT MONITORING function communication session active on RS485 port out of step ZONE 1 counter NZ1 out of step ZONE 2 counter NZ2 out of step disabled thresholds 12 Ir U2 gt The last trip condition threshold indication is also showed on front panel display more information on trip condition are presented in the recorded EVENT see par 5 10 SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST 4 PROGRAMMING AND TEST The protection relay is easily programmable following the instructions in the next paragraphs e HOW TO PROGRAM THE PROTECTION RELAY e HOW TO MODIFY A VISUALIZED PARAMETER All parameters can be freely modified the proper protection set up as required by the plant management is submitted to the operator s judgment 41 Howto program the protection relay The programmable parameters are showed in figures 2 3 and 4 at the following references B2 B7 relay address RS485 and date time C1 protection relay insertion 01 06 nominal values contrast etc El E17 polygonal characteristic parameters thresholds set up 1 F13 output relays functions G1 G6 digital input functions R1 R
19. e protection relay manages an undervoltage threshold U to detect this condition and to start up the voltage memory function the voltage memory function will keep for a programmed time length Tmem programmable up to 1 second a voltage reference corresponding to the system voltage prior to the fault and thus the relay will be able to operate properly The memorized reference voltage is related to system frequency before the incidence of the event When the Tmem time expires the out of step protection functions will be disabled 1 1 Threshold operations The ZFP8N protection relay measures the currents and voltages of a generator and computes SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS negative sequence current negative sequence voltage positive sequence current positive sequence voltage residual current The positive sequence current component is verified with a programmable I1 threshold the out of step protection function will operate only if the threshold is exceeded The negative sequence voltage is verified with a programmable U2 gt threshold whilst the negative sequence current is verified with a programmable I2 threshold and the residual current with the programmable Ir threshold the out of step protection function will be disabled if one of the previous thresholds is exceeded These thresholds assure that the out of step protection operates under symmetrical occurrences and not in presence o
20. ection disabling function has the priority on TA function additional time b the ALL selection ALL the thresholds has the priority on single threshold selection G1 DIGITAL INPUT DIG1 SET UP programmable DIGI Programming of the function related to digital input channel 1 0161 Parameter cc programming of the condition that activates the function related to digital input DIG1 the condition is selectable between HI and LO Parameter xxxxxxx programming of the function related to digital input DIG1 the following functions are selectable NONE no functions active related to digital input DIG1 TA TLIM additional time on TLIM timer OF PZ1 ZONE1 disabled NZ1 counter blocked 24 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING OF PZ2 ZONE2 disabled NZ2 counter blocked OF ALL ZONE1 and ZONE2 disabled NZ1 and NZ2 counters blocked STATUS activation of status function see paragraph 1 G2 DIGITAL INPUT DIG2 SET UP programmable DIG2 cc XXXXXXXX Programming of the function related to digital input channel 2 DIG2 the selections available are the same as presented for DIG1 ref G1 plus the following MONITOR activation of pilot wire monitor function G3 G6 DIGITAL INPUTS DIG3 DIG6 SET UP programmable DIG3 Programming of the function related to digital input channel 0163 the selections available are the same as presented for DIG1 ref G1 5
21. ents and voltages and the absence of residual current The evolution of the measured impedance vector is checked on the X R diagram with the polygonal out of step characteristic to identify power swing occurrences When an out of step condition occurs a timer is started and a counter is increased during the programmed time delay the protection relay will verify the number of out of step occurrences and will increase the counter if any The protection relay will trip if the counter reaches the programmed maximum number of allowed out of step occurrences in the time delay All the set up and measured parameters can be visualized on the front panel display and transmitted on the RS485 communication serial port THRESHOLDS the ZFP8N protection relay manages the following independent thresholds e polygonal out of step characteristic two zones with counters NZ1 and NZ2 e 1 positive sequence minimum current threshold 11 e 1 negative sequence overcurrent threshold 12 e 1 negative sequence overvoltage threshold U2 gt e 1 residual overcurrent threshold Ir gt e 1 undervoltage threshold for voltage memory functionalities U lt lt The available settings for each threshold are listed in Table A the operation of the protection relay is described in paragraph 1 1 TIME DELAYS programmable time delays related to the protection functions are available specifically the available time delays are the followings e time length to chec
22. er TLIM is activated Q2 Q3 TRIP THRESHOLD PARAMETERS The actual values of the NZ1 and NZ2 timers number of out of step occurrences at event registration in are shown Example Q2 Q3 El El ACT 1 2 2 3 04 ACTIVATED OUTPUT RELAYS 1 RELAY nnnnnnn It shows the list of the output relay activated by the threshold trip El RELAY E3 RELAY 1 3 4 1 4 When no output relays have been activated no relays programmed to TRIP on the threshold the following message will be displayed El RELAY NONE El T Tot WWW WW S It is shown the value of the timer TLIM at the event registration the information will be shown only for the following events Examples Q5 TLIM TIMER VALUE TRIP PZ1 event on trip out of step ZONE1 TRIP PZ2 eventon trip out of step ZONE2 When the event is memorized on the external command STATUS the message N A Not Applicable is shown instead of the number of seconds El T Tot N A 27 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Q6 DIGITAL CHANNELS RELATED TO THE MEMORIZED EVENT 1 DIG Sip 04 The list of the digital inputs related to the memorized event is displayed STATUS function command or additional time TA enabled ref par 5 8 If no digital inputs were activated the message NONE is displayed Q7 Q8 MEASURED IMPEDANCE It is shown the values and X in of Zn of the measured impedance at the event registration the impe
23. essed as nominal voltage Un The available settings of the threshold are listed in Table A E15 RESIDUAL OVERCURRENT THRESHOLD programmable Ir Tn Programming of the residual overcurrent threshold to disable the operation of the out of step protection x xx threshold value expressed as nominal current In The available settings of the threshold are listed in Table A 5 6 3 Voltage memory threshold E16 UNDERVOLTAGE THRESHOLD programmable U lt lt Un Programming of the undervoltage threshold to activate the voltage memory function x xx threshold value expressed as nominal voltage Un The available settings of the threshold are listed in Table A E17 VOLTAGE MEMORY LENGTH programmable X XX S Programming of the length of the voltage memory function when activated by the threshold x xx time length in seconds 21 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING The available settings of the time length are listed in Table A 5 7 Output relays programming figure 3 The session allows to program the activation of the output relays R1 R2 R3 or R4 on START or TRIP conditions of the out of step protection functionalities Equivalent information and set up related to relay R1 is available for the relays R2 R3 and R4 just changing the relay identification F1 OUTPUT RELAY R1 QUIESCENT STATUS programmable R1 NORM Programming of the R1 relay status when
24. f other electrical system failures to be detected by other protection functions The positive sequence components of the voltages and the currents are used to compute the impedance vector The evolution of the impedance vector is checked on the diagram X R with the polygonal out of step characteristic The measurement characteristic of the protection relay is a polygonal represented by a rectangle with programmable widths and inclination angle The inclination angle matches the centre points of the circles representing the locus of the impedances seen from the measuring point voltage transformers location with out of step occurrences The widths are defined as function of the impedance of the generator and of the unit transformer The rectangle characteristic is defined by two zones Zone 1 covers the condition with the electrical centre of the power swings in the generator and unit transformer Zone 2 covers the condition with the electrical centre of the power swings in the network system The out of step condition is detected when the impedance vector enters the power swing characteristic at one side and leaves it at the other side This means a loss of synchronism condition If the vector impedance enters and leaves the polygonal characteristic at the same side the power swing will evolve toward a stabilized condition When the impedance vector enters in the polygonal characteristic the programmable timer TLIM will start SE
25. g For each digital input can be programmed the condition that activates the related functions HI voltage gt 20V dc LO voltage 0 10 V dc ac The digital input acquisition is valid when the voltage value stays in the range HI or LO for at least 40 ms EVENTS information related to the last 8 events TRIP or STATUS are recorded in the EEPROM memory Information includes the thresholds set up the activated relays TRIP event only the measured or computed parameters measured currents and voltages negative sequence current and voltage the digital input status and date and time of the event SELF DIAGNOSIS the software includes a non stop monitoring module that controls the functionality of all hardware and software resources of the protection relay Detected fault conditions are reported by e diagnostic message on the display e glow of a red LED on front panel e R5 output relay drop off SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS The fault condition signaling stays as far as faults are pointed out by the monitoring module during this condition the protection functions are suspended to avoid unsuitable tripping STATUS FUNCTION when the STATUS function is activated by one of the digital input when programmed the protection relay memorizes information related to measured parameters and digital input status see par 5 10 EVENTS The recorded information allows an analysis of trip c
26. herefore a loss of auxiliary supply will force time date to the following condition 01 01 90 00 00 00 5 4 Protection insertion figure 2 C1 INSERTION SELECTION programmable INSERT XXXXXX The possible selections are the followings STAR operations measuring the phase to earth voltages DELTA operations measuring the phase to phase voltages Examples INSERT INSERT STAR DELTA 5 5 Nominal values set up figure 3 D1 NOMINAL CURRENT SELECTION In programmable Si In nominal phase current programmable 1 A or 5 D2 NOMINAL VOLTAGE SELECTION Un programmable Un XXX XX V Un nominal voltage selection nominal secondary voltage of plant VT s selectable between the followings 57 73 63 50 72 16 100 110 125 190 220 230 380 400 D3 PRIMARY PHASE CURRENT programmable 17 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING In prim primary phase current value of the installed phase CT s The values are programmable from 10 to 19999 A D4 PRIMARY VT s VOLTAGES programmable ALAC M Un prim primary voltage value of the installed VT s The values are programmable from 1000 to 999999 V D5 STANDARD DISPLAY SELECTION not programmable ANSI D6 DISPLAY CONTRAST LEVEL programmable LEV x The display contrast level is programmable from 0 to 9 The backlighted display is switched off if no push button is pressed for at least 5 minutes when one of the front pane
27. hout condensation Protection degree for flush mounting mini rack Weight 38 1A 5A programmable 4 In 100 In 57 73 63 50 72 16 100 110 V 125 190 220 230 380 400 V 2 Un 2 Un 50 60 Hz 10 19999 1000 999999 4 1 5A 250V change over 0 5 0 2 gt 10 6 as Uaux 2mA RS 485 half duplex Mod BUS ASCII 300 9600 bauds selectable fibre optic module 24 320 Vdc 20 48 230 Vac 20 47 63 Hz 5 10 W 10 60 C 25 80 lt 95 31 3 5 SEB Divisione Elettronica e Sistemi TECHNICAL DATA Note 1 The additional relay R5 is controlled by self test program Note 2 Breaking capability at 110 Vdc L R 40 ms 100 000 operations Note 3 The output contacts of R3 and R4 relays can be configured as signaling or tripping relays 39 SEB Divisione Elettronica e Sistemi TABLES 8 TABLES Table A Polygonal characteristic parameters Setting Resolution see figure 1 as 9o of Zn Un In ZG impedance generator direction 0 1 150 0 9 0 1 96 ZT impedance transformer direction 0 1 150 0 0 1 90 ZS additional impedance network direction 0 0 150 0 0 1 90 ZA rectangle half width 0 2 150 0 96 0 1 96 ANG angle o 60 pos 1 Maximum number of permitted out of step 1 9 1 occurrences ZONE 1 Maximum number of permitted out of step 1 9 1 occurrences in ZONE 2 TLIM Time delay to check out of step occurrences 0 20 99 99 s 0
28. k out of step occurrences TLIM e activation time of the output relay signaling the first out of step occurrence TSIGN e voltage memory duration TMem All time delay are time definite the available settings for each time delay are listed in Table A OUTPUT RELAYS the ZFP8N controls 4 output relays named R1 R2 and R4 these relays can be programmed to be activated on thresholds or functions SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS START instantaneous activation of the output relay when the parameter exceeds the programmed threshold value or following function activation TRIP activation of the output relay when the programmed maximum number of out of step occurrences is reached for one of the two zones of the polygonal characteristics counters NZ1 and NZ2 The quiescent state of each single relay R1 R2 R3 and R4 can be programmed as normally energized ON or normally de energized OFF An additional relay R5 normally energized is controlled by the self diagnosis routines to report detected fault conditions Related to each counter partial and total counters of TRIP conditions are available DIGITAL INPUTS there are available 6 digital inputs to activate the following functions when enabled by the programmed set up additional time delay on TLIM on off of one or more of the polygonal zones STATUS function recording of measures on external event e e e e pilot wire fault monitorin
29. l push button is pressed the display is switched on 5 6 Thresholds and time delays set up figure 3 The available settings of the parameters related to the thresholds are listed in Table A 5 6 1 Out of step polygonal characteristic E1 ON OFF THRESHOLD programmable ANSI 78 aoc ccc ON enabled threshold OFF disabled threshold available but not active E2 E5 POLYGONAL PARAMETERS programmable E2 E3 E4 E5 ZG ZT ZS ZA Programming of the parameters related to the polygonal characteristic of the out of step function ZG impedance generator direction ZT impedance transformer direction 18 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING ZS additional impedance network direction 2 rectangle half width All the parameters are expressed as of Zn where Zn Un In Un programmed D2 In programmed in D1 The available settings for each parameter are listed in Table A E6 ANGLE OF THE POLYGONAL CHARACTERISTICS programmable ANG nn Programming of the angle of the polygonal characteristic of the out of step function The available settings of the parameter are listed in Table A E7 MAXIMUM PERMITTED OUT OF STEP OCCURRENCES programmable 2 m Programming of the maximum number of permitted out of step occurrences for each zone of the polygonal characteristic 21 counter of the out of step allowed conditions Zone 1 NZ2 co
30. l V1 15 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 5 3 Address and time figure 2 B1 RELAY MODEL not programmable ZFP8N B2 B3 COMMUNICATION PROTOCOL programmable B2 PROTOCOL The communication protocol is programmable between the followings STANDARD ASCII SEB protocol MODBUS Modbus protocol SLAVE When the MODBUS protocol is selected the following display is showed to allow the selection of the transmission speed B3 BAUDRATE xxxx parameter is selectable between the followings 300 600 1200 2400 4800 9600 When the STANDARD protocol is selected the baud rate is automatically selected by the protection relay B4 ADDRESS programmable NR RELAY 001 Programmable address from 001 to 255 The number is used on RS485 port to address a specific relay when two or more protection relays are linked on the same serial line B5 RELAY SERIAL NUMBER not programmable SER NR 0012345 B6 SOFTWARE REVISION LEVEL not programmable SW REV 27 77 16 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING B7 TIME DATE programmable dd mm yy hh mm ss Time and date are programmable and they are used to mark recorded events NOTE the clock is not provided with back up battery t
31. ry function will keep for a programmed time length Tmem programmable up to 1 second a voltage reference corresponding to the system voltage prior to the fault and thus the relay will be able to operate properly The memorized reference voltage is related to system frequency before the incidence of the event When the Tmem time expires the out of step protection functions will be disabled SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS Im Z Figure 1 Polygonal Characteristic SEB Divisione Elettronica e Sistemi FRONT PANEL KEYS 2 FRONT PANEL KEYS The 5 push buttons on the front panel allow to visualize all the protection parameters and to modify the protection set up gt right arrow down arrow programming session activation or parameter confirmation change or increment of the selected parameter RESET VISUALIZATION OF PARAMETERS reset of the protection relay rif par 4 3 e all visualizations are circular and they can be displayed using the two arrow push buttons e the structure of the visualizations and their contents are showed in figure from 2 3 and 4 e when the sealable transparent front panel is installed only the arrow push buttons and the RESET push button are accessible to prevent unauthorized modification of the protection set up MODIFICATION OF PARAMETERS e remove the transparent sealable front panel to access ENTER and push buttons SEB Division
32. s test is selected Figure 3 ref F13 it is possible to command an output relay one at the time to trip from the current status allowing functional tests on electrical plants The output relays are activated with the following sequence 1 SELECT THE VISUALIZATION of the desired output relay to be tested TEST R1 OFF 2 PRESS ENTER to activate the test session the message OFF will start to blink 3 PRESS and the message on the display will change as TEST R1 ON 4 PRESS ENTER to command the instantaneous trip of the output relay change of the current status The relay will stay on the new condition until e the 5 RESET push button is pressed e the ENTER push button is pressed and the sequence at points 3 and 4 is repeated presenting OFF condition The same procedure will be used for R2 and R4 relays 11 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 5 DISPLAY AND PROGRAMMING The contents and the structure of the displayed messages are shown in figures 2 3 and 4 the references A1 B1 B2 etc identify specific displayed messages in the figures 51 Standard display A1 STANDARD DISPLAY figure 2 It is the standard displayed message without operator s intervention no push buttons pressed for at least 5 minutes or when the RESET push button has been pressed The displayed information is function of the protection relay status NORMAL FUNCTIONING During this state the
33. s the TA delay DIG2 digital input DIG2 activates the TA delay DIG3 digital input DIG3 activates the TA delay DIG4 digital input DIG4 activates the TA delay 0165 digital input DIGS activates the TA delay DIGG digital input DIGG activates the TA delay More than one digital input can activate the same additional time delay e g DIG 1 3 Please note that to activate the additional time delay at least one of the digital inputs should be programmed ref G1 G6 paragraph 5 8 5 6 2 Out of step function enabling thresholds E12 POSITIVE SEQUENCE MINIMUM CURRENT THRESHOLD programmable T1 lt In Programming of the positive sequence minimum current threshold to enable the operation of the out of step protection x xx threshold value expressed as nominal current In The available settings of the threshold are listed in Table A E13 NEGATIVE SEQUENCE OVERCURRENT THRESHOLD programmable I2 In 20 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Programming of the negative sequence overcurrent threshold to disable the operation of the out of step protection x xx threshold value expressed as nominal current In The available settings of the threshold are listed in Table A E14 NEGATIVE SEQUENCE OVERVOLTAGE THRESHOLD programmable 02 Un Programming of the negative sequence overvoltage threshold to disable the operation of the out of step protection x xx threshold value expr
34. selected the transmission speed can be programmed between 300 to 9600 bauds ref B3 par 5 3 To integrate the protection relay in control systems the documentation related to the protocol is freely available on request It is suggested to use a shielded twisted pair AWG22 terminal 19 not connected internally can be used for shields connections 36 SEB Divisione Elettronica e Sistemi INSTALLATION 120 Ohm 120 Ohm 1 CONTROLLORE PROTEZ 1 PROTEZ 2 PROTEZ 3 It is suggested to terminate the serial line with a resistance 120 O 1 4 W 37 SEB Divisione Elettronica e Sistemi TECHNICAL DATA 7 TECHNICAL DATA Measuring inputs Rated phase current In Thermal withstand continuously Thermal withstand for 1 s Rated voltage Un programmable Thermal withstand continuously Thermal withstand for 1 s Rated frequency Primary CT s current Primary VT s voltage Output contacts ratings Number of relays note 1 Rated current Rated voltage Contact configuration Breaking capability note 2 tripping relays R1 R2 signaling relays R3 R4 R5 note 3 Mechanical life Digital inputs Number of inputs External control voltage Typical current sink Data transmission Standard Communication protocol Transmission speed Optional Auxiliary supply Range Frequency Vac Burdens min max Environmental conditions Operation Transport and storage Relative humidity wit
35. sted wire cross section 1 5 mm With reference to the insertion diagram the voltage input terminals must be selected as function of the programmed Un value 31 SEB Divisione Elettronica e Sistemi INSTALLATION 1 P1 1 CB1 B2 T CB1 C2 2 52 P2 CB2 1 0 380V CA CB2 2 0 125 75 CB2 3 P2 s2 si 7 2 2 6 0 380V lt lt P1 P2 52 1 U 1 U1 Uab 3 5 2 e to t CB2 7 0 125V bc u2 CB2 11 0 380V 5 GL 2 12 0 125V lt R5 gt 1 36 I TEST CB1 37 gt E i LINE H gt gt 21 CB1 14 amm si R S T dc LINE L n a GO E Dee CB1 22 gt IG 2 b c lt CB1 10 e lt 1 4 E Gx E GEO gt mb T oe 4 ED 2 lt 2 9 So 5 CTE CB2 4 E DIG 6 Figure 7 Insertion 32 SEB Divisione Elettronica e Sistemi INSTALLATION E Lo 82 1 1 CB1 C2 P2 52 P2 52 P2 2 1 2 2 1 CB2 1 0 380V ST CB2 2 0 125 lt Ua CB2 3 U1 CB2 6 0 380V lt CB2 7 0 125v 75 Ub CB2 11 0 380V CA CB2 12 0 125V lt U2 Uc CB2 13 U3 km R S T 12 4 8 8 b 0 Figure 8 Insertion 33 SEB Divisione Elettronica e Sistemi INSTALLATION 24 25 26 1 27 2 28 3 29 4 30 5 31 E 32 7 33 34 35 9 10 36 37 38 12 13 39 40 14 di 45 42 16 43 17 44 18 L 19 M 20 48 21 22 23 CB
36. tion is detected NONE no activation related to the function F5 RELAY ACTIVATION ON OUT OF STEP FUNCTION ENABLED programmable R1 DISAB XXXXXXXX Programming of the activation of the output relay when the out of step protection functionalities are disabled for the intervention of one of the thresholds I1 lt I2 U2 gt or Ir The parameter is selectable as the following START instantaneous output relay R1 activation when the out of step protection function is disabled NONE no activation related to the function F6 F8 RELAY ACTIVATION ON DISABLING THRESHOLDS programmable F6 F7 F8 RI 02 R1 12 R1 Ir XXXXXXXX XXXXXXXX XXXXXXXX Programming of the activation of the output relay when one or more of the thresholds lt 12 gt U2 gt or Ir related to the out of step protection disabling function are exceeded The parameter is selectable as the following START instantaneous output relay R1 activation when the single threshold is exceeded NONE no activation related to the function The output relay will remain activated as far as the threshold is exceeded out of step protection function disabled F9 F12 RELAY ACTIVATION ON COUNTERS STATUS programmable F9 F10 F11 F12 R1 7108 R1 NZ1AO R1 208 R1 NZ2AO Programming of the activation of the output relay when the 21 counter related to Zone 1 of the pol
37. unter of the out of step allowed conditions Zone 2 The two counters are independently programmable from 1 to 9 E8 TIME DLENGTH FOR OUT OF STEP OCCURRENCES CHECK programmable TLIM XX XX S Programming of the time length to check the out of step occurrences the time length is programmable from 0 20 to 99 99 seconds E9 OUTPUT RELAY ACTIVATION TIME programmable TSIGN XX XX S Programming of the activation time of the output relay to signal the occurrence of the first power swing the time delay is programmable from 0 20 to 99 99 seconds E10 ADDITIONAL TIME LENGTH FOR OUT OF STEP OCCURRENCES CHECK programmable TA TLIM XX XX S 19 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING The additional time TA is programmable from 00 00 to 99 99 seconds please note that at least one of the digital inputs should be programmed to activate the time function ref G1 G6 paragraph 5 8 The additional time TA is added to the time length TLIM to obtain the total time length equals to E11 DIGITAL INPUT ACTIVE ON ADDITIONAL TIME FOR OUT OF STEP OCCURRENCES CHECK not programmable TA TLIM It shows the digital input programmed to activate the additional time the time length The parameter eeeeeeee can show one of the following values DISABLED none of the digital inputs has been programmed to activate an additional time delay DIG1 digital input DIG1 activate
38. voltage P9 computed negative sequence current P10 computed negative sequence voltage P11 computed residual current For each display it is presented the measure or parameter identifier and the value expressed as In or Un and primary value A or V P12 P13 impedance values R X expressed as Zn P14 P15 impedance values R X expressed as secondary Ohm 5 10 Events figure 4 On the display are shown the memorized information related to the last 8 TRIP or STATUS events The 8 events are recorded and identified with a progressive number from 1 to 8 the more recent event shows a lower number Q1 EVENT NUMBER El cccccccc The index E1 E2 E8 identifies the memorized event The parameter gives information on the kind of event and it can show one of the following values NONE no event memorized TRIP PZ1 event on trip out of step ZONA1 TRIP PZ2 event on trip out of step ZONA2 START event on start condition timer TLIM TLIM event on end timer TLIM STATUS information recorded on external command POWER switch on of the protection relay auxiliary power 26 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING For the events NONE and POWER ON no other information is presented for the other events the following displays give more detailed information on the event The START event is registered when the impedance vector enter the first time in the polygonal characteristic and the tim
39. ygonal characteristic or the NZ2 counter related to Zone 2 of the polygonal characteristic are different than zero power swing condition detected this functionality is useful for test purposes It is identified the clockwise or counter clockwise impedance vector swing e NZ1OR clockwise impedance swing in Zone 1 e NZ1AO counter clockwise impedance swing in Zone 1 23 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING e NZ20R clockwise impedance swing in Zone 2 e NZ2AO counter clockwise impedance swing in Zone 2 The parameter is selectable as the following START instantaneous output relay R1 activation when the impedance swing is detected NONE no activation related to the function The output relay will remain activated as far as the respective counters NZ1 and NZ2 are greater than zero therefore for a maximum time length equals to TLIM when both counters will be reset F13 TEST OF OUTPUT RELAYS R1 TEST R1 XXXXXXXX See paragraph 4 4 5 8 Digital inputs function programming figure 4 For each digital input one of the following functions are selectable additional time on TLIM timer ON OFF of one of the zones of the polygonal characteristic STATUS function recording of measures on external command pilot wire fault monitoring only DIG2 monitors DIG1 e e e e When the function of more than one digital input refers to a threshold the priority will be the following a OF sel
Download Pdf Manuals
Related Search