20 Distance protection Info - 1 EV S V13/ Claus/ 23.08.00 SIPROTEC 4 Distance Protection 7SA522 and...

Distance protection Info - 1

EV S V13/ Claus/ 23.08.00

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: [email protected]


EV S V13/ Claus/ 23.08.00

SIPROTEC 4 -What it means

SIPROTEC 4

is a family of numerical

Protection, Control and Automation Devices

from


EV S V13/ Claus/ 23.08.00

7SA5227SA6

Experience

7SA510

7SA5117SA513

Requi

rem

ents

SIPROTEC 4Software System

System

SIPROTEC 4Hardware Platform

Variability

Distance protection: Past and Present


EV S V13/ Claus/ 23.08.00

SIPROTEC 4Distance Protection 7SA522 and 7SA6

7SA522 + 7SA6

One family of distance

protection for all voltage

applications


EV S V13/ Claus/ 23.08.00

SIPROTEC 4 Distance protection

7SA61 + 7SA522 Protection 4-line display MV, HV and EHV

7SA612 + 7SA5227SA611 + 7SA5227SA610

7SA63 Protection + local control integrated graphic display mainly MV

7SA6327SA631

7SA64 Protection + local control detached control panel mainly MV

7SA6427SA641All core functions are available in all the housing versions


EV S V13/ Claus/ 23.08.0017.10.97en513all7

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


EV S V13/ Claus/ 23.08.0017.10.97en513all8

85-21

50N, 51N, 67N

85-67N

WI

50, 5150N-2, 51N-2

ANSI-No.


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


EV S V13/ Claus/ 23.08.00

ANSI-No.

59, 27 1)

50HS

50-STUB

79

25

50BF

49 2)

1) 7SA522: Overvoltage, 7SA6: Over- and Undervoltage

2) available only in 7SA6


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)


EV S V13/ Claus/ 23.08.00

ANSI-No.

74TC

86

FR

47

* available approx. 1st Q/01


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*)

1) available only in 7SA522


EV S V13/ Claus/ 23.08.00

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


EV S V13/ Claus/ 23.08.00

Quadrilateral Characteristic

5 Zones (time delayed) optionally:

- Forward- Reverse- Non-directional

Prevention of load encroachment

Dependant Zone Z1b for Teleprotection andAuto-recloser

X

R

forwards

forwards

reverse

reverse

LoadLoad

Z1

Z2

Z4

Z3

Z1B

Z5

Line

SIPROTEC 4 Distance Protection


EV S V13/ Claus/ 23.08.00

0

5

10

15

20

25

30

35

40

45

50

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

% of zone 1 setting

trip

pin

g t

ime

(m

s)

Relay S

SIPROTEC 4, 7SA522 + 7SA6

Relay E

Relay A

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

G VF

ZLZQ

E

If

distance relay


EV S V13/ Claus/ 23.08.00

+ 2 . 0 0

+ 1 . 6 0

+ 1 . 2 0

+ 0 . 8 0

+ 0 . 4 0

+ 0 . 0 0

- 0 . 4 0

- 0 . 8 0

- 1 . 2 0

A

0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0

m s

E s t i m a t o r 2 ( n = 6 )

E s t i m a t o r 3 ( n = 8 )

E s t i m a t o r 4 ( n = 1 0 )

N o r m a l s t a g e 1( n = 2 1 )N o r m a l s t a g e 2( n = 2 6 )

N o r m a l s t a g e 3

j u m p d e t e c t i o n

E s t i m a t o r 5 ( n = 1 3 )

E s t i m a t o r 6 ( n = 1 5 )

Estimator 1 (n=5)

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


EV S V13/ Claus/ 23.08.00

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


EV S V13/ Claus/ 23.08.00

SIPROTEC 4 Distance Protection 7SA522

Mho Characteristic

5 Zones optionally:

- Forward- Reverse

Prevention of load encroachment

X

R

Z1

Z2

Z4

Z1B

Z5Line

Z3 (if revers)

Load Load

Dependant Zone Z1b for Teleprotection andAuto-recloser


EV S V13/ Claus/ 23.08.00

SIPROTEC 4, Distance Protection Parallel-line compensation: connection and setting

Q1

Q3

Q5

Q7

Q2

Q4

Q6

Q8

IL1(A)

IL2(B)

IL3(C)

L1 (A)L2 (B)L3 (C)

52 Circuit breaker

Line

Busbar

52 Circuit breaker

Parallel line

I4


EV S V13/ Claus/ 23.08.00

Patented power swing detection provides secure operation with swing frequencies of up to 6 Hz

t/s0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 1,1 1,2 1,3 1,4 1,5 1,6iL1/A-4-20

t/s0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 1,1 1,2 1,3 1,4 1,5 1,6iL2/A-20

t/s0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 1,1 1,2 1,3 1,4 1,5 1,6iL3/A-202

t/s0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 1,1 1,2 1,3 1,4 1,5 1,6uL1/V-500

t/s0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 1,1 1,2 1,3 1,4 1,5 1,6uL2/V-50050

t/s0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 1,1 1,2 1,3 1,4 1,5 1,6uL3/V-50050

t/s0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 1,1 1,2 1,3 1,4 1,5 1,6DisTRIP3p Z1BmfRelay TRIPRelay PICKUPDis. reverseDis. forwardDis.T.SEND>DisTel Rec.Ch1Power Swing

Example:400 kV400 kmfPS 2 Hz3-pole fault


EV S V13/ Claus/ 23.08.00

SIPROTEC 4 Distance Protection: Fault locator


EV S V13/ Claus/ 23.08.00

Z1 Z1B

L1-E

L2-E

A B1 1

2 2

Z1Z1B

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

SIPROTEC 4 Distance Protection: Phase segregated Teleprotection


EV S V13/ Claus/ 23.08.00

SIPROTEC 4 Distance Protection: Teleprotection with three-terminal lines

Software provides teleprotection of three-terminal lines without additional logic


EV S V13/ Claus/ 23.08.00

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 characteristic

this 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


EV S V13/ Claus/ 23.08.00


3I0

T

T3I0>>

3I0>

T3I0>

T3I0>>>

3I0>> 3I0>>>

Definite-time characteristic


EV S V13/ Claus/ 23.08.00


0 5 10 15 20 25 30 350

1

2

3

4

5

6

7

8

9

10t

3I0 / 3I0p

Example: t = 5.8 - 1.35 ln(3I0 / 3I0p)

T3I0pmax (P3145)

T3I0p (P3144)

3I0p(P3140)

T3I0min(P3141)

3I0p Startpoint(P3154)

Tripping characteristic Logarithmic Inverse


EV S V13/ Claus/ 23.08.00


IEC-characteristic:

normal inverse: Tp

IpI

st *

1

14.002.0

very inverse: Tp

IpIst *1

5.13

extremly inverse: Tp

IpI

st *

1

802

long time inverse: Tp

IpIst *1

120

ANSI-characteristic:

DB

IpI

Ast

N*

1

Inverseshort inverse very inverselong inverse extremly inversemoderately inverse definite inverse

Logarithmic-inverse characteristic:

PI

IPITPITst

03

03ln*03max03 for t>T3I0Pmin, otherwise: t[s]=T3I0Pmin


EV S V13/ Claus/ 23.08.00


Inverse-time characteristic: IEC

3I0/Ip

T

Tp =1

b 200 a

Reset: b = 1.045 x 3I0/IP

Pickup: a = 1.1 x 3I0/IP


EV S V13/ Claus/ 23.08.00


-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

10

dB

0 1 2 3 4 5 6 7 8 9 10 11

f/fn

Filter characteristic for stages 3I0>>> and 3I0>>


EV S V13/ Claus/ 23.08.00


Filter characteristic for stages 3I0> and Inverse time stage

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

10dB

0 1 2 3 4 5 6 7 8 9 10 11

f/fn


EV S V13/ Claus/ 23.08.00


Earth faultdirection

=

EF IE> Echo

3I0>>>EF>>> Trip

P

EFp Trip

Inrush-stabilisation

T(3I0/IN)

T

Tele-protection

T

SOTF

= &

&

3I0>>> Def. Time Stage

Inverse Time Stage

&

&

P

>EF>>> block

Direc. 3I0>>>

P Direc. 3I0p

>EFp block

P 3I0p

EF Fault Det.

>EF Trip rel.

3I0>> Def. Time Stage

3I0> Def. Time Stage

= Input signal(binary input)

P = Parameter = Output Signal(alarm, command)

P3146 AddTdelay


EV S V13/ Claus/ 23.08.00

Z1(A)

T1BZ1B

A B

Z1(B)

Z1B(A)

Z1B(B)

&

&

&

&(A)T1BZ1B

(B)OR

OR

OR

OR

TS

Z1 orfurtherzones

trans-mit

re-ceive

TripTrip

re-ceive

trans-mit

Z1 orfurtherzones

TS

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

TS


EV S V13/ Claus/ 23.08.00

SIPROTEC 4 Distance ProtectionSTUB protection for 11/2-circuit breaker arrangement

Busbar A

fee

de

r 1

fee

de

r 2

stub fault

IA

IB

Ik = IA+IB line isolator 1

line isolator 2

CB(A)

CB(C)

CB(B)

Busbar B

Release of STUB-stage with open line isolator:


EV S V13/ Claus/ 23.08.00

Auto-reclosure (AR)

ON

OFF2nd

dead timeT1-act

TRIP1-pole3-pole

1stdead time

RE-CLOSE

*RE-

CLOSE

T2-act

TRIP

tzone-delay

ADT = Reclosure, when AR at the remote end was successfulDLC = Reclosure only on dead lineRDT = Reduced dead time, if trip had occurred with zone extension

finalTRIP

*

SIPROTEC 4Distance Protection: Auto-reclosure


EV S V13/ Claus/ 23.08.00

application examples functions(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 settablevia binary inputs

- synchronous monitoring time, after whichthe closing will be blocked (settable)

parameters measurement

- 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°)

16.10.97engersyn1

Synchronism-check


EV S V13/ Claus/ 23.08.00

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


EV S V13/ Claus/ 23.08.00

SIPROTEC 4Distance Protection

with light

or electrical exchangeable upgradeable

7SA522


EV S V13/ Claus/ 23.08.00

User friendly Operation

Safe operation,reduced training requirements

Fits all applications

System conceptSIPROTEC and SICAM

Flexible Functionality and Open Communication

One Family

SIPROTEC 4 -Distance Protection


EV S V13/ Claus/ 23.08.00

Full Logic Functionalit

y Additional logicInterlockingMeasured values

processing

Log. IN 1

Log. IN 2

Log.IN3

Logic inputs from the matrix to CFC

Logic outputs to theconfiguration matrix

F1

F2

>1

CFC

Log.OUT1

Distance Protection 7SA522What makes these devices so attractive ?


EV S V13/ Claus/ 23.08.00

Comprehensive measured

value processing

I1 :400.9A f:50.0HzU1:12.22kVP :+8.03MW cosQ :+2.64MVar

L1 402.1A Max450.1A L2 401.2A Max421.2AL3 401.0A Max431.4AE 00.0A

% IL UL-E UL-LL1 100.0 100.4 100.1L2 100.4 100.3 100.0L3 100.1 100.1 100.4



EV S V13/ Claus/ 23.08.00

The easy handling

with DIGSI 4


20 Distance protection Info - 1 EV S V13/ Claus/ 23.08.00 SIPROTEC 4 Distance Protection 7SA522 and...

Documents

Transcript of 20 Distance protection Info - 1 EV S V13/ Claus/ 23.08.00 SIPROTEC 4 Distance Protection 7SA522 and...