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SIPROTEC 4 Distance Protection 7SA522 and 7SA6

SIPROTEC 4 Distance Protection 7SA522 and 7SA6. Productmanager Distance Protection Michael Claus EV S V 13 Nürnberg H Phone: +49 911 433 8261 Fax: +49 911 433 8301 Email: Michael.Claus@ev.siemens.de. SIPROTEC 4 is a family of numerical Protection, Control and Automation Devices

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SIPROTEC 4 Distance Protection 7SA522 and 7SA6

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  1. SIPROTEC 4Distance Protection 7SA522 and 7SA6 Productmanager Distance Protection Michael Claus EV S V 13 Nürnberg H Phone: +49 911 433 8261 Fax: +49 911 433 8301 Email: Michael.Claus@ev.siemens.de

  2. SIPROTEC 4 is a family of numerical Protection, Control and Automation Devices from SIPROTEC 4 -What it means

  3. 7SA510 SIPROTEC 4 Software System 7SA511 7SA513 System Experience Requirements 7SA522 7SA6 Variability SIPROTEC 4Hardware Platform Distance protection: Past and Present

  4. 7SA522 + 7SA6 One family of distance protection for all voltage applications SIPROTEC 4Distance Protection 7SA522 and 7SA6

  5. 7SA610 7SA612 + 7SA522 7SA611 + 7SA522 7SA631 7SA632 7SA641 7SA642 All core functions are available in all the housing versions SIPROTEC 4 Distance protection 7SA61 +7SA522 Protection 4-line display MV, HV and EHV 7SA63 Protection + local control integrated graphic display mainly MV 7SA64 Protection + local control detached control panel mainly MV

  6. ANSI-No. • 21, 21N • 68 • FL SIPROTEC 4 Distance Protection, Scope of functions (1) • Distance Protection • full scheme measurement with sophisticated loop selection • fast three phase and single phase tripping • with/without parallel line compensation • special filtering for CVT transients • special algorithm for detection and compensation of CT saturation  Low demand on CT specification • Power swing blocking/out-of-step tripping • Fault Locator with/without parallel line compensation 17.10.97 en513all7

  7. ANSI-No. • 85-21 • 50N, 51N, 67N • 85-67N • WI • 50, 5150N-2, 51N-2 SIPROTEC 4 Distance Protection, Scope of functions (2) • Universal teleprotection interface (PUTT, POTT, Blocking, Unblocking, DTT...) • High resistance earth fault protection for earthed systems • Teleprotection interface for earth fault protection (Directional comparison, Blocking, Unblocking) • Weak infeed protection(Echo and Trip) • Overcurrent protection DMTL/IDMTL as parallel or emergency function 17.10.97 en513all8

  8. ANSI-No. • 59, 27 1) • 50HS • 50-STUB • 79 • 25 • 50BF • 49 2) SIPROTEC 4 Distance Protection, Scope of functions (3) • Voltage protection 1) • Fast tripping with switch-onto-fault condition (12 ms) • STUB Bus Overcurrent protection • Single and three pole multishot automatic reclosure • Synchro-check • Circuit-breaker failure protection • Thermal overload protection 2) • Earth fault detection in compensated/isolated systems 2) 1) 7SA522: Overvoltage, 7SA6: Over- and Undervoltage 2) available only in 7SA6

  9. SIPROTEC 4 Distance Protection, Scope of functions (4) ANSI-No. 74TC 86 FR 47 • Trip Circuit Supervision • Lock Out • Oscillographic Fault Recording (total length 15 s) • Voltage Phase Sequence • Interfaces • Time synchronization (IRIG-B, DCF77) • User interface#1 (on the front for DIGSI 4) • User-(Service-)interface #2 (on the rear, DIGSI 4/Modem) • System interface (IEC60870-5-103/Profibus FMS/others) • Remote relay interfaces #1 (planned for teleprotection*) • 1) Remote relay interfaces #2 (planned for teleprotection*) * available approx. 1st Q/01 1) available only in 7SA522

  10. Operating system monitoring Auxiliary voltage failure Measured value detection Buffer battery Hardware–Watchdog Software–Watchdog Working memory Program memory Parameter memory Sampling frequency 1/5 A–setting Calibration data Earth current transformer sensitive/normal Modules (I/O Boards) ! SIPROTEC 4 Distance Protection, Monitoring Plausibility monitoring • Current sum • Current symmetry • Open conductor • Fuse Failure • 1- / 2-pole failures • 3-pole failures • Voltage sum • Voltage symmetry • Voltage phase rotation new

  11. SIPROTEC 4 Distance Protection Quadrilateral Characteristic 5 Zones (time delayed) optionally: - Forward- Reverse- Non-directional Dependant Zone Z1b for Teleprotection andAuto-recloser Prevention of load encroachment

  12. SIPROTEC 4Distance Protection: Overall Trip Time Curves at SIR = 30

  13. SIPROTEC 4 Distance Protection, Data window position, Adaptive Measuring Algorithm

  14. SIPROTEC 4 Distance Protection Function: Difference 7SA522 - 7SA6 • 7SA522 • for solid earthed systems • quadrilateral and/or MHO characteristic(MHO circle for specific markets, quadrilateral is preferred) • full market introduction: 1999 • primary market outside continental Europe • 7SA6 • for systems with solid grounding or reactance (compensated) / isolated treatment of system starpoint • fault detection selectable as either I>, Z<, U/I and U/I/ • Market introduction: Summer 2000 • Primary market continental Europe

  15. SIPROTEC 4 Distance Protection 7SA522 Mho Characteristic 5 Zones optionally: - Forward- Reverse Dependant Zone Z1b for Teleprotection andAuto-recloser Prevention of load encroachment

  16. SIPROTEC 4, Distance ProtectionParallel-line compensation: connection and setting

  17. Patented power swing detection provides secure operation with swing frequencies of up to 6 Hz Example: 400 kV 400 km fPS 2 Hz 3-pole fault

  18. SIPROTEC 4 Distance Protection:Fault locator

  19. SIPROTEC 4 Distance Protection: Phase segregated Teleprotection 2 2 L2-E Z1 Z1B L1-E 1 1 B A Z1B Z1 • A1 trips single-phase in L1 with a phase-segregated L1-receive-signal • Maximum of Selectivity Note: 3 binary channels for both directions are requested or (in preparation) one serial link

  20. SIPROTEC 4 Distance Protection: Teleprotection with three-terminal lines Software provides teleprotection of three-terminal lines without additional logic

  21. SIPROTEC 4 Distance Protection: High Resistance Earth Fault Protection • Earth (zero sequence) current protection, 4 stages • 3 definite-time stages • 1 inverse-time stage: IEC, logarithmic inverse or ANSI characteristicthis stage can also be used as a 4th definite-time stage • Directional determination with 3V0 and/or Ipol of an earthed power transformer • Directional determination with V2 and I2 (negative sequence) • Sensitive 3I0-measurement with a dynamic from 0.003 A to 100 x In • Elimination of higher harmonics with special digital filters • Inrush-stabilisation with I0/100Hz • Teleprotection: Directional comparison, Blocking or Unblocking • Operation with weak infeed trip and echo • Instantaneous trip after switch-onto-fault

  22. SIPROTEC 4 Distance Protection: High Resistance Earth Fault Protection Definite-time characteristic

  23. SIPROTEC 4 Distance Protection: High Resistance Earth Fault Protection Tripping characteristic Logarithmic Inverse t T3I0pmax (P3145) T3I0p (P3144) 3I0p(P3140) Example: t = 5.8 - 1.35 ln(3I0 / 3I0p) T3I0min (P3141) 3I0 / 3I0p 3I0p Startpoint(P3154)

  24. SIPROTEC 4 Distance Protection: High Resistance Earth Fault Protection

  25. SIPROTEC 4 Distance Protection: High Resistance Earth Fault Protection Inverse-time characteristic: IEC

  26. SIPROTEC 4 Distance Protection: High Resistance Earth Fault Protection Filter characteristic for stages 3I0>>> and 3I0>>

  27. SIPROTEC 4 Distance Protection: High Resistance Earth Fault Protection Filter characteristic for stages 3I0> and Inverse time stage

  28. SIPROTEC 4 Distance Protection: High Resistance Earth Fault Protection

  29. SIPROTEC 4 Distance Protection: Permissive overreach transfer trip (POTT) TS

  30. SIPROTEC 4 Distance ProtectionSTUB protection for 11/2-circuit breaker arrangement Release of STUB-stage with open line isolator:

  31. TRIP 1-pole 3-pole RE- CLOSE * TRIP RE- CLOSE final TRIP ON 2nd dead time OFF 1st dead time tzone-delay T1-act T2-act SIPROTEC 4Distance Protection: Auto-reclosure Auto-reclosure (AR) * ADT = Reclosure, when AR at the remote end was successful DLC = Reclosure only on dead line RDT = Reduced dead time, if trip had occurred with zone extension

  32. Synchronism-check application examplesfunctions (separately settable for AR and - combination with internal or manual closing) external AR - program selection via parameters: - activation also for manual closing synchro-check / U1 > U2 < / (settable) U1 < U2 > / U1 < U2 < / overrule - asynchronous switching (settable) - all programs separately settable via binary inputs - synchronous monitoring time, after which the closing will be blocked (settable) parametersmeasurement - voltages U<, U>, U - evaluation of the fundamental wave - f synchronous switching (0.01 ... 0.03 Hz) - insensitive against harmonics - f asynchronous switching (0.03 ... 1 Hz) - for dead line check all three phases are controlled -  (1° ... 60°) 16.10.97 engersyn1

  33. SIPROTEC 4 Distance Protection: Breaker failure protection • 2 stages • Internal initiation and via binary inputs • Extremely short reset time: approx. 10ms • End-fault protection • Pole discrepancy supervision

  34. SIPROTEC 4Distance Protection 7SA522 with light or electrical • exchangeable • upgradeable

  35. User friendly Operation SIPROTEC 4 -Distance Protection Safe operation, reduced training requirements Fits all applications • Flexible Functionality and • Open Communication System concept SIPROTEC and SICAM One Family

  36. Full Logic Functionality F1 Log. IN 1 Log.OUT1 >1 F2 Log. IN 2 CFC Log.IN3 Logic outputs to the configuration matrix Logic inputs from the matrix to CFC Distance Protection 7SA522What makes these devices so attractive ? Additional logic Interlocking Measured values processing

  37. Comprehensive measured value processing L1 402.1A Max450.1A L2 401.2A Max421.2A L3 401.0A Max431.4A E 00.0A % IL UL-E UL-L L1 100.0 100.4 100.1 L2 100.4 100.3 100.0 L3 100.1 100.1 100.4 Distance Protection 7SA522What makes these devices so attractive ? I1 :400.9A f:50.0Hz U1:12.22kV P :+8.03MW cos Q :+2.64MVar

  38. The easy handling with DIGSI 4 Distance Protection 7SA522What makes these devices so attractive ?

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