DVTA-EN-EP
Contents
1. e Disturbance Record Analysis DYTATYK 64 es all EP2 zavariro 26 Feb 04 13 58 33 380 A File View Edit Value Format Window Help sal sae aala v m al el gt Is m El xt ool Cuve vaue mm Q2ms 1836 50 UtrB UtrC Y 50 177 97 Utr C v 177 97 B QM ki COM ki SBC OM be szog gt fi szinkr pill ind B gt C B QM kinn Fig 2 The instantaneous transfer mode of operation Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 10 25 EuroP PROTECTA O Electronics Co Ltd Automatic transfer device 3 2 2 Fast transfer method The method of processing the fast transfer procedure is based on constant deceleration which means squared increase of the angle difference In the calculation method there are three selected phase angle values 58 degrees 130 degrees and 360 degrees Because of the deceleration the elapsing time between the first two angle differences is half of that between the second two values See Fig 3 The algorithm measures the elapsing time between 58 and 130 degrees The circuit breaker operating time is subtracted from the double value of this measured time to get the moment of generation of the close command to the circuit breaker So at the moment of closing the contact the angle difference will be 360 degrees which means phase coincidence synchronous positi2. Co Ltd EuroProt DVTA EN EP Automatic transfer device 5 Technical data Power supply rated voltage Power consumption Binary input rated voltage Analogue input rated voltage Consumption voltage path Binary output contacts Rated voltage Thermal load continuous Making current Breaking current Conductive load L R 40 msec Operation temperature Type tests Surge tests 2 kV 50 Hz 5 kV 1 2 50 msec Disturbance tests 2 5 kV 1 MHz 220V DC 20 25 V 220V DC 100 V 1VA SIEMENS V2306 B1006 A601 250 V 8A 16A 0 25 A 0 14 A 0 50 C IEC 255 5 6 IEC 255 5 8 IEC 255 22 1 Electrostatic discharge 8kV IEC 255 22 2 Radio frequency disturbance 10 V m IEC 255 22 3 Repeated fast transients 2kV IEC 255 22 4 Compiled by Approved by Date Page Kalman Kiss L szl Eperjesi 2002 15 25 PROTECTA Electronics Co Ltd EuroProt DVTA EN EP Automatic transfer device 6 User interface to the device 6 1 Parameter setting using Protect for Windows The Figures in this chapter show the Parameters window in the Protect for Windows operation software open for communication wit a DVTA EN EP device The application of this software is described in the EuroProt manual J z Param terek Fig 6 The Parameters Window of Protect for Windows operating software The parameters are explained in
3. Optically isolated digital inputs SB off SB on SB off SB on SB open SB Q closw Q prot block SB prot block inst trigg Input 72 Enabling Disabling bi UT circ OK si UT circ s2 UT circ b2 UT circ prot block Input 79 inst trigg Input 86 bi remote control b2 remote control SB remote control Parallel tr bi off Parallel tr b2 off Parallel tr SB off Input 87 Acknowledgement Fig 8 Status of the binary inputs in the On line window of Protect for Windows operating software Input Explanation bl QM off Circuit breaker of b1 transformer is OFF SB OM off Circuit breaker of the SB bus coupler is OFF b1 QS off Disconnector of b1 transformer is OFF SB QS off Disconnector of b1 transformer is OFF bl QM on Circuit breaker of b1 transformer is ON SB OM on Circuit breaker of the SB bus coupler is ON bi QS on Disconnector of bl transformer is ON Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 19 25 PROTECTA Electronics Co Ltd EuroProt DVTA EN EP Automatic transfer device SB QS on Disconnector of b1 transformer is ON bl remote control b2 remote control SB remote control Circuit breaker of b1 transformer is in remote operation mode Circuit breaker of b2 transformer is in remote operation mode Circuit breaker of SB bus couple
4. off Disconnector of transformer b1 switched off b1 QS on Disconnector of transformer b1 switched on b1 prot block bl inst trigg b2 QM off b2 QM on b2 QS off B2 QS on b2 prot block b2 prot block SB QM off SB QM on SB QS off SB QS on SB prot block Enabling input Disabling input b1 VT circ OK s VT circ OK s2 VT circ OK b2 VT circ OK bl remote b2 remote SB remote Par setting Ackn b1 QM off bi QM on b2 QM off b2 QM on SB QM off SB QM on Parall Parall b1 off Parall b2 off Parall SB off Protection blocking from transformer b1 Triggerd instantaneous transfer from b1 Circuit breaker of transformer b2 switched off Circuit breaker of transformer b2 switched on Disconnector of transformer b2 switched off Disconnector of transformer b2 switched on Protection blocking from transformer b2 Triggerd instantaneous transfer from b1 Circuit breaker of bus coupler SB switched off Circuit breaker of bus coupler SB switched on Disconnector of bus coupler SB switched off Disconnector of bus coupler SB switched on Protection blocking from bus coupler SB Status change of enabling Status change of disabling Voltage transformer secondary circuit of b1 is OK Voltage transformer secondary circuit of s1 is OK Voltage transformer secondary circuit of s2 is OK Voltage transformer secondary circuit of b2 is OK Remote controlled
5. 0 00 00 00 B f off SB off Fig 10 Evaluated events window of Protect for Windows operating software Event Explanation Transfer start Transfer reset Function triggered at Function reset at Transfer trig Inst tr s2b2 Inst tr sls2 Inst tr s2sl Inst tr slbl Fast tr s2b2 Fast tr sls2 Fast tr s2sl Fast tr slbl Slow tr s2b2 Slow tr sls2 Slow tr s2sl Slow tr slbl Parallel tr b1 off Parallel tr b2 off Parallel tr SB off Triggered transfer Instantaneous transfer s2 gt b2 Instantaneous transfer s1 gt s2 Instantaneous transfer s2 gt s1 Instantaneous transfer s1 gt b1 Fast transfer s2 gt b2 Fast transfer s1 gt s2 Fast transfer s2 gt s 1 Fast transfer s1 gt b1 Slow transfer s2 gt b2 Slow transfer s1 gt s2 Slow transfer s2 gt s1 Slow transfer s1 gt b1 Transfers without voltage interruption with b1 off Transfers without voltage interruption with b2 off Transfers without voltage interruption with SB off Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 22 25 PROTECTA Electronics Co Ltd EuroProt DVTA EN EP Automatic transfer device 6 2 8 Digital events Event Explanation b1 QM off Circuit breaker of transformer b1 switched off bi QM on Circuit breaker of transformer b1 switched on b1 QS
6. 14 50 54 890 Mi File View Edit Value Format Window Help tal PS Bale aja m ale Jal El la E gt ms Sle dim Curve Value Measured value Ustl Y 2 Urs2 3 Ustl 4 Ust2 5 Utr B Utr2 Utd v Re 6375 167 28 BEEN Im 33 25 IKIKIKIIK 167 28 157 28 BZUM ki Ange 27 547 9 DU Data Y X Close AAAA gt Fig 4 Voltages and vectors during the fast transfer switching 3 2 3 Slow transfer method If the fast transfer method can not be carried out because of quick decay of the busbar voltage or because the deceleration of the vector rotation then the automatic transfer device turns to slow transfer mode of operation Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 12 25 EuroP PROTECTA ae Electronics Co Ltd Automatic transfer device Using the slow transfer method means that the closing command is delayed until the busbar voltage decays below the defined limit In this case the device waits the elapsing of an additional time delay this can be set to zero as well and then generates the close command to the circuit breaker of the reserve power supply When the circuit breaker of the reserve power supply closes the other circuit breaker should be in OFF position BA Disturbance Record Analys
7. 2 voltage transformer circuit is OK b2 inst trigg b2 instantaneous transfer triggered Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 20 25 PROTECTA Electronics Co Ltd EuroProt DVTA EN EP Automatic transfer device 6 2 6 Counter On line information COUNTERS Transfer switching Inst transfer Inst transfer Inst transfer Inst transfer Fast transfer Fast transfer Fast transfer Fast transfer Slow transfer Slow transfer Slow transfer Slow transfer Parall transf Parall transf Parall transf s2 s1 5 s2 s1 s2 si bi s2 b2 s1 gt 82 s1 gt s2 si bi s2 b2 s1 gt s2 s1 s2 si bi bi off b2 off SB off count count count count count count count count count count count count count count count count O O A Fig 9 Counters in the On line window of Protect for Windows operating software Counter Explanation Transfer switching count Inst transfer s2 gt b2 count Inst transfer s1 gt s2 count Inst transfer s2 gt s1 count Inst transfer s1 gt b1 count Fast transfer s2 gt b2 count Fast transfer s1 gt s2 count Fast transfer s2 gt s1 count Fast transfer s1 gt b1 count Slow transfer s2 gt b2 count Slow transfer s1 gt s2 count Slow transfer s2 gt s1 count Slow transfer s1 gt b1 count Parallel transfer b1 off count Parallel transfer b2 off count P
8. 2 can be measured Ubl OK Voltage of the supply side 1 is healthy Usl OK Voltage of the busbar section is healthy Us2 OK Voltage of the busbar section 2 is healthy Ub2 OK Voltage of the supply side 2 is healthy 6 2 3 Measured phase angles Phase angle Explanation Angle s1b1 Phase angle between the voltage of the supply side 1 and that of the busbar section 1 Angle s1s2 Phase angle between the voltage busbar section 1 and that of the busbar section 2 Angle s2b2 Phase angle between the voltage of the supply side 2 and that of the busbar section 2 Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 18 25 PROTECTA Electronics Co Ltd EuroProt DVTA EN EP Automatic transfer device 6 2 4 Status of the device and the transfer function Status Explanation Active Active state of the transfer function Disabled Disabled state of the transfer function Blocked Blocked state of the transfer function b2s2s1 b1 mode B2 feeds common S1 and S2 Bl is reserve b1s1 s2b2 mode B1 feeds S1 and B2 feeds S2 b1s1s2 b2 mode B1 feeds common S1 and S2 B2 is reserve Illegal mode of operation Illegal state of operation transfer is not possible Parallel mode of Parallel operation of the two transformer not allowed state operation 6 2 5 Status of the binary inputs On line information
9. CTA DUE Electronics Co Ltd Automatic transfer device The automatic transfer means disconnecting the infeed with a failure very rapidly and then the appropriate circuit breaker dividing the bus sections or the circuit breaker connecting the reserve infeed is closed at a moment when the stress of the rotating motors is minimal Of course transfer is possible only if the voltage side to be switched on is considered to be healthy the voltage is above a predefined level The device supports all possible operating states of the busbar The triggering signal for the switchover is the starting signal of the infeed protection devices and the switchover can be initiated manually as well 2 2 Configuration with three busbar sections and three infeeds The other configuration consists of three infeeds and three busbar sections It is supposed that the normal operation of the substation means energised state of the infeeds and the circuit breakers coupling the busbar sections are switched off In the case of the configuration with three sections a second switchover resulting operation with one infeed only can be enabled or disabled by setting a digital parameter The hardware limitations of a single device allow support of two infeeds only the three infeed configuration is controlled by two co operating similar devices The information exchange is performed by relay contacts and optically isolated digital inputs between the t
10. PROTECTA EuroProt complex numerical device factory configuration automatic transfer device Budapest February 2007 Document ID EM 13 16368 00 en PROTECTA Electronics Co Ltd EuroProt DVTA EN EP Automatic transfer device Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 2 25 CONTENTS Application main characteristics ii A AA A ke aeccaees 4 1 1 Applicaton HEL casted tes ett e e antes ese 4 t2 Mam characteristics sonn acne side eed ad sen de inue ac tese hae eee Rd 4 2 The automatic transfer function see tetti etra Perte o desdgacasuesadevaceccetenncss 6 2 1 Configuration with two busbar sections and infeeds sss 6 2 2 Configuration with three busbar sections and three infeeds 7 2 3 General ic atures dis ia oo Tias 8 3 Operation of the automatic transfer function sese 9 3 1 States Of the substations a Sd os ts O AAA TOS 9 3 27 Modes OF operation AA A iuto s Mas onde d bu dir HR Ret 9 3 2 1 Instantaneous transfer method seen 10 3 2 2 Fast transfer method esee E Ire xe ats at ied tud 11 3 2 3 Slow transfer method o 12 3 3 Transfer with parallel operation of the transformerSs 13 4 Operating states of the QeYIDOS sc escis oe abs pte aseo osi IE PR IR NOIRES 14 4 1 Active ope
11. Prot manual The DVTA EN EP factory configuration produced by PROTECTA Electronics Co Ltd is assembled to perform automatic transfer between an operating and a reserve power transformer or incoming feeder supplying a busbar The device can be implemented in substations where there is a high requirement to minimize the breakdown time do to loss of power supply The DVTA EN EP device performs the transfer between the normal and the standby power supply with the highest possible speed The further SCADA options extend the device to the complex bay unit for the medium voltage network 1 2 Main characteristics The EuroProt protection family of PROTECTA Co Ltd is based on microcontrollers and on fully numerical signal processing technology The device is programmed for continuous self supervision which can be extended to the external CB close and open circuits as well The event log can store up to 50 events and event sequences for up to 300 digital events with 1 ms time resolution The device includes a real time clock with battery RAM support This clock can be synchronised from an external PC or from the SCADA system Additionally a Word Time Synchroniser device GPS OP produced by PROTECTA Co Ltd is available as well The disturbance recorder integrated in the CPU module can record up to 11 records The total recording time is about 4 s The integrated disturbance recorder function of the devices stores all sampled voltage si
12. TA Bol Electronics Co Ltd Automatic transfer device 3 2 1 Instantaneous transfer method The instantaneous transfer mode of operation needs a triggering event received on a dedicated digital input This event can be a trip command to the circuit breaker on the high voltage side of the transformer or incoming feeder The controlled receipt of the signal on the digital input needs 4 ms The processing of the logic equations needs 2 ms The reaction time for the auxiliary relay of the circuit breaker can be estimated to 8 10 ms If the operating time of the circuit breaker is 60 ms then the total processing time is 82 ms This time is needed for the decision to transfer to the reserve power supply The operating time of the output relay is additional 8 10 ms and the circuit breaker operating time is further 60 ms The requirement is that the angle difference at the moment of closing the contacts should be below 60 degrees 60 degrees means normal starting state for the motors on the busbar The calculation with normal loss of speed of the motors results 17 degrees phase difference to generate the close command If there is considerable phase difference between the normal and the reserve supply voltages this angle will be even less An instantaneous transfer can be initiated only if both voltages are above the specified limit as well The instantaneous transfer can be enabled or disabled by parameter setting
13. arallel transfer SB off count Number of triggered transfer commands Number of performed Number of performed Number of performed Number of performed Number of performed Number of performed Number of performed Number of performed Number of performed Number of performed Number of performed Number of performed s2 gt b2 instantaneous transfers sl gt s2 instantaneous transfers s2 s instantaneous transfers sl gt b1 instantaneous transfers s2 gt b2 fast transfers sl gt s2 fast transfers s2 gt s1 fast transfers sl gt b1 fast transfers s2 gt b2 slow transfers sl gt s2 slow transfers s2 gt s1 slow transfers sl gt b1 slow transfers Number of transfers without voltage interruption with b1 off Number of transfers without voltage interruption with b2 off Number of transfers without voltage interruption with SB off Compiled by Approved by Date Page Kalman Kiss L szl Eperjesi 2002 21 25 PROTECTA Electronics Co Ltd EuroProt DVTA EN EP Automatic transfer device 6 2 7 Evaluated events Evaulated events demo picture Transfer start Transfer reset Transfer Inst tr Inst tr Inst tr Inst tr Fast Fast Fast Fast Slow Slow Slow Slow Paral Parall tr Parall tr tr tr tr tr tr tr tr t 1 trigg s2h2 sis2 s2s1 sibi s2b2 sis2 s2s1 sibi s2b2 88 00 00 00 00 00 B 90 00 0
14. changes to adapt the device to the requirements of any applications In this application the large number of high power motors connected to the busbar induce the special requirements If the power infeed supplying the busbar fails to deliver the power supply voltage then these rotating motors due to the application of capacitors for phase correction keep the induced state for a longer time and the speed of rotation decreases slowly according to the load and the inertia of the rotors During this period the vector position of the motor voltage shifts continuously If the reserve infeed is switched on at a random moment the voltage can be in opposite position as compared to the reserve supply voltage and the consequence is a high current surge and a possible damage of the rotating motor shafts To avoid the switchover at a wrong moment the DVTA EN EP configuration controls the automatic switchover to the reserve infeed The present configuration is prepared to support different station configurations 2 1 Configuration with two busbar sections and infeeds One of them contains two infeeds and the busbar can be divided into two parts by a circuit breaker The coupled operation of the two infeeds is usually not permitted QUB1 UB2G e QSSB QM SB e US1 US2 Fig 1 Configuration with two transformers Compiled by Approved by Date Page Kalman Kiss L szl Eperjesi 2002 6 25 EuroP PROTE
15. d frequency of the RS line to line voltages received from the four voltage transformer groups The evaluation of the voltages is based on the voltage level and the angle difference between the following voltages See Fig 1 e Bl and Sl which means one infeed voltage and the voltage of the adjacent busbar section e SI and S2 which means the voltage of both busbar sections e B2 and S2 which means the other infeed voltage and the voltage of the adjacent busbar section Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 8 25 EuroP PROTECTA O Electronics Co Ltd Automatic transfer device 3 Operation of the automatic transfer function 3 1 States of the substation Based on the circuit breaker and disconnector positions indicated by status signals three states of the substation can be recognised which are suitable to initiate switchover see Fig 1 b1s1s2 b2 state of operation B1 and SB ON B2 OFF and all disconnectors ON b1s1 s2b2 state of operation B1 and B2 ON SB OFF and all disconnectors ON b2s2s1 state of operation B2 and SB ON B1 OFF and all disconnectors ON These states are frozen till the end of the switchover procedure so the changing status signals can not cause faulty recognition of the states The scheme picture of the graphic LCD on the front side indicates the actual positions if the circuit breakers and the disc
16. ets deactivated and even a started transfer procedure will be interrupted If the device returns to active state again no acknowledgement is needed 4 2 Disabled operating state Received dynamic information can disable the operation of the device for example VT MCB failure contradictory status of circuit breakers or disconnectors disable signal from protections in case of short circuit on the busbar local control of any circuit breaker etc If any of the disabling signals is active the operation of the transfer function is not possible even a started transfer procedure will be interrupted If the device returns to active state again acknowledgement is needed 4 3 Blocked operating state After a completed transfer procedure or exceeding the timeout without transfer the device gets in blocked operating state For possibility the following transfer the device must be acknowledged The device generates a message about a successful and about the failed transfer procedure as well At triggering the transfer procedure a timer is started If after this Timeout the appropriate circuit breaker does not send information about the closed state the procedure was unsuccessful To achieve correct messages the parameter must be set to a longer delay then the expected slowest transfer procedure Compiled by Approved by Date Page Kalman Kiss L szl Eperjesi 2002 14 25 PROTECTA Electronics
17. gnals and the digital status signals enabling off line analysis of the processes Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 4 25 EuroP PROTECTA DUE Electronics Co Ltd Automatic transfer device The device realises several measuring functions based on the available analogue signals The design and the man machine interface of the device is described in the EuroProt complex protection hardware and software description and user s manual further EuroProt manual The device can be controlled more conveniently using an external PC and the Protect for Windows software The operation of this program is explained in the EuroProt manual too The external communication can be performed either via serial RS 232 interface isolated for 2 kV or via two fibre optic connectors integrated in the rear side of the CPU The methods of external communication are described in the EuroProt manual too Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 5 25 EuroP PROTECTA DUE Electronics Co Ltd Automatic transfer device 2 Theautomatic transfer function A DVTA EN EP automatic transfer function satisfies all special requirements of the customers This technical document describes one of the possibilities and the R D department of Protecta is ready to make
18. independently of Remote enable transfer is enabled Remote enable disable enable Message blocking 1 no messages will be sent 6 2 On line Window Measurements and status signals On line adatok Us2 Us2 Us2 Us2 Angle sis2 Angle s2b2 b2s2si bi mode bisi s2b2 mode bisis2 b2 mode Illegal mode of operation Parallel mode of operation Fig 7 The On line window of Protect for Windows operating software 6 2 1 Voltages Voltage Explanation Ubl Voltage of the supply side 1 Usl Voltage of the busbar section 1 Us2 Voltage of the busbar section 2 Ub2 Voltage of the supply side 2 Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 17 25 PROTECTA Electronics Co Ltd EuroProt DVTA EN EP Automatic transfer device 6 2 2 Status signals for the voltages Status signals Explanation Ubl gt 20 Voltage of the supply side 1 is above 20 Us1 gt 20 Voltage of the busbar section 1 is above 20 Us2 gt 20 Voltage of the busbar section 2 is above 20 Ub2 gt 20 Voltage of the supply side 2 is above 20 Ubl meas Voltage of the supply side 1 can be measured Us1 meas Voltage of the busbar section 1 can be measured Us2 meas Voltage of the busbar section 2 can be measured Ub2 meas Voltage of the supply side
19. is DYTATYK 44 all 1 em zavariro 30 Jan D4 12 34 47 404 f File View Edit Value Format Window Help cg ESC alam uan al gt l gt ms xag sim Curve Value y 180 15 Utr E Y 180 15 Fig 5 Voltages during the slow transfer switching 3 3 Transfer with parallel operation of the transformers The parallel operation of two transformers is permitted for a short duration only If the transfer function detects parallel operation one of the three circuit breakers must be switched off automatically The circuit breaker to be switched off can be defined by dedicated inputs connected to a switch with three possible positions If a transfer is initiated manually only the open circuit breaker is to be closed by a manual command the appropriate circuit breaker is opened automatically Compiled by Approved by Date Page Kalman Kiss L szl Eperjesi 2002 13 25 EuroP PROTECTA O Electronics Co Ltd Automatic transfer device 4 Operating states of the device The operating states of the device can be Enabled Disabled or Blocked 4 1 Active operating state The switchover device can be activated or deactivated by device enable parameter setting or by digital inputs The digital inputs can be enabled or disabled by the remote enabled parameter If the device is not active the transfer function g
20. on again This connection between phase angle differences and time differences is valid only during the first rotation so after the first reach of 58 degrees the possibility of another fast transfer start is prohibited If the subtraction results negative value then the remaining time is not sufficient for the correct closing of the circuit breaker In this case the automatic transfer device turns to slow transfer mode of operation The automatic transfer device turns also to slow transfer mode of operation if the voltage of the busbar fell below 20 of nominal voltage at 130 degrees because in this case the result of the phase angle measurement is unreliable The fast transfer starts when both voltages are above the defined higher level and the angle difference reaches 58 degrees For closing the circuit breaker of the reserve power supply the other circuit breaker should be in OFF position The fast transfer method can be enabled or disabled with parameter setting Compiled by Approved by Date Page Kalman Kiss L szl Eperjesi 2002 11 25 PROTECTA Electronics Co Ltd EuroProt DVTA EN EP Automatic transfer device ON command 2A 2At CB OP ti e Fig 3 Vectors during the fast transfer switching CB OP time Countdown 58 lower At 0 upper EZ Disturbance Record Analysis D TA T K 31 es allomas zavariro 08 Nov 02
21. onnectors are ON then the LED symbols show with symbolic lights this status In OFF position the LED symbols are dark in case of contradictory status signals the LED s are blinking 3 2 Modes of operation There are three different modes of operation 1 Instantaneous transfer this mode is possible if an event triggers the action and the angle difference between the two voltage vectors is under the predefined limits and the angle is expected to remain below 60 degrees when the circuit breaker poles close after the circuit breaker operating time 2 Fast transfer this mode of operation is triggered by the angle difference between two voltage vectors The close command is generated in advance before 360 degrees relative rotation of the voltage vectors taking into consideration the operating time of the circuit breaker Based on the experiences during the first rotation the shape of the voltage remains approximately sinusoidal later it is distorted because of the different speed of the motors 3 Slow transfer in this mode of operation the switchover is delayed until the voltage of the motors decays below a small level and the closing of the circuit breaker will not generate higher currents then a normal motor start The following paragraphs describe the different modes of operation in details Compiled by Approved by Date Page Kalman Kiss L szl Eperjesi 2002 9 25 EuroP PROTEC
22. r is in remote operation mode b1 QM open OFF command for the circuit breaker of b1 transformer b1 QM close ON command for the circuit breaker of b1 transformer SB QM open OFF command for the circuit breaker of the bus coupler SB SB QM close ON command for the circuit breaker of the bus coupler SB Parallel tr b1 off OFF command to the circuit breaker of b1 transformer Parallel tr b2 off OFF command to the circuit breaker of b2 transformer Parallel tr SB off OFF command to the circuit breaker of the bus coupler SB b1 prot block b2 prot block SB prot block Transformer b1 diabled by a protection function Transformer b2 disabled by a protection function Bus coupler SB disabled by a protection function bl inst trig b1 instantaneous transfer triggered Acknowledgement Acknowledgement b2 QM off Circuit breaker of b2 transformer is OFF b2 QS off Disconnector of b2 transformer is OFF b2 QM on Circuit breaker of b2 transformer is ON b2 QS on Disconnector of b2 transformer is ON b2 QM open OFF command for the circuit breaker of b2 transformer b2 QM close ON command for the circuit breaker of b2 transformer Enabling Enabling Disabling Disabled b1 VT circ OK sl VT circ OK s2 VT circ OK b1 voltage transformer circuit is OK S1 voltage transformer circuit is OK S2 voltage transformer circuit is OK b2 VT circ OK 0
23. rating Sal iii tia AEE EEA TEE iaa dnd 14 42 Disabled Operation eawage annonce tev 14 4 3 Blocked oper te dd dd ad cus 14 E it RE ETE 15 6 User interface to the devices e rd RD SERERE va desdgacasustadsvaneseetased 16 6 1 Parameter setting using Protect for Windows esses 16 6 2 On line Window Measurements and status signalS 17 6 2 1 VO MA estan eui ean NE Grece onde N b zs cab re 17 6 2 2 Status signals for the voltages o cee ceeseecseneeceeeeeceeeeeceeeeeesteeeeeteeeees 18 6 2 3 Measured phase angles q d tod uid da 18 6 2 4 Status of the device and the transfer function ssesssss 19 6 2 5 Status of the Dinar yin Pues vac coena ease taa euo eod ee id 19 6 2 6 oni s 21 6 2 7 Eyaluated is 22 6 2 8 Digital Events ii clics 23 EuroP PROTECTA DUE Electronics Co Ltd Automatic transfer device 1 Application main characteristics 1 1 Application field The devices of the EuroProt complex protection family are modular devices The modules are selected assembled and configured according to the tasks to be performed This manual describes one of the several possibilities the DVTA EN EP factory configuration The general description concerning the EuroProt devices can be found in the document EuroProt complex protection hardware and software description and user s manual further Euro
24. state of b1 Remote controlled state of b2 Remote controlled state of SB Parameter setting Acknowledgement b1 QM circuit breaker OFF input b1 QM circuit breaker ON input b2 OM circuit breaker OFF input b2 QM circuit breaker ON input SB QM circuit breaker OFF input SB QM circuit breaker ON input Parallel operation Transfers without voltage interruption with b1 off Transfers without voltage interruption with b2 off Transfers without voltage interruption with SB off Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 23 25 EuroProt DVTA EN EP Automatic transfer device PROTECTA Electronics Co Ltd 00 2 92 91 90 W3 E ININIDNVI4AV 89d L007 ZO v moefans Aq pojooyo PYTOQ 890099913 V 9310Yd guppuozs q UMDIQ d3 N3 VA Q iq ponpa Page 24 25 wo Nh co vavos xd Afro iw of ns 00 sII Np wo ofr oo 03 e m 0 vo r o Sox G Leu XL O4 MLOSLOYd 001 CN o o o XA Ro TATA Ro EAFAFA s lt o 1 E v o 1 NAN ro s w of nN co o o 9 9 In In tS WW W
25. the following table Parameter Explanation t impulse Duration of the generated ON and OFF commands t slow OFF delay In case of slow transfer the delay of the OFF command t slow ON delay In case of slow transfer the delay of the ON command t timeout Timeout After initiation of the transfer switching this time delay will be waited then the decision will be made based on the status of the circuit breakers if the transfer was successful or not t msg delay If the status of the switches of the substation does not allow transfer after this time delay an alarm signal will be generated Upper voltage limit Voltage limit above which the voltage is considered to be healthy Lower voltage limit Voltage limit below which the voltage is considered to be low enough to perform slow transfer Circuit breaker time Circuit breaker operating time Sync angle lower Lower limit of the angle range to synchronous position Sync angle lower Upper limit of the angle range to synchronous position Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 16 25 PROTECTA Electronics Co Ltd EuroProt DVTA EN EP Automatic transfer device Inst transfer enable Enabling instant transfer mode Fast transfer enable Enabling fast transfer mode Device active 99 transfer is not enabled
26. w AAA e o o njo NN ro j oj ofr ola 10 avy ZO vy 10 agya LO ava LOZZ LOZZ 0 LOZZ 0 3l Au Luz Date 2002 Approved by L szl Eperjesi Compiled by K lm n Kiss EuroProt DVTA EN EP Automatic transfer device PROTECTA Electronics Co Ltd CT1 1003 100V CT1 1003 100V U CT1 1003 100V DISABLED N N a El al ol t 2 r o 5 9 e o j o E 0 2201 220V o E m zj o oJ a o e a JEGECGCECGE El v i ol ol ol o SESE SP N S e E 0 2201 220V o E s Nj N mj m a j a aj aj a z SEDES El o ol cl als zj oO e N NASN o fes 0 2201 220V l Z ao a G E N elo io to 0 o o E o z E o 5 z col cot co cof al ea JEEREREERER PS5 2203 220V A B 0 2201 220V C 3 4 8 o 0 2201 220V Term 107 LK SYNC 5 PARALL B2 PARALL B3 PROTECTA Elektronikai kft DVTA EN EP Baloghn EM 06 16363 00 EXTERNAL CONNECTION Page 25 25 Date 2002 Approved by L szl Eperjesi Designed by Drawn by Compiled by K lm n Kiss
27. wo devices To preserve symmetry of the substation the voltage measurements of the two transformers located on both sides are connected to the analogue voltage input module No 1 of both devices and the voltage of the infeed in the middle is measured by both devices on the analogue voltage input module No 2 In this configuration the software of both devices is identical with the software of the device controlling two infeeds the only requirement is to connect the communication channels between the devices Compiled by Approved by Date Page K lm n Kiss L szl Eperjesi 2002 71 25 EuroP PROTECTA O Electronics Co Ltd Automatic transfer device 2 3 General features The program of the switchover function continuously measures the phase voltages of the four voltage transformer groups indicated in Fig 1 These are the voltages of both infeeds and both busbar sections Based on the phase voltages the line to line voltages are calculated for the further signal processing The voltage of a voltage transformer group is considered to be healthy 1f two from three line to line voltages are above the level defined by a parameter setting single phase fault on the above voltage level don t cause switchover trigger the voltage can be evaluated if at least one line to line voltage is above a minimal level defined by another parameter value The program calculates angle position an
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