Productmanager Distance Protection Michael Claus EV S V 13 Nürnberg H Phone: +49 911 433 8261 Fax:...
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Transcript of Productmanager Distance Protection Michael Claus EV S V 13 Nürnberg H Phone: +49 911 433 8261 Fax:...
Productmanager Distance Protection
Michael Claus
EV S V 13 Nürnberg H
Phone: +49 911 433 8261
Fax: +49 911 433 8301
Email: [email protected]
SIPROTEC 4
7SA522
Distance Protection
for Transmission Lines
Distance protection Info - 3EV S V13/ Claus/ 21.08.00
7SA522Distance Protection for Transmission Lines
Distance protection Info - 4EV S V13/ Claus/ 21.08.00
4-line back-lit display Measured values Fault data
Proven numeric keypad secure entry of numbers easy password entry
Turning ON/OFF of functions
Control of switchgear (plant)
14 LED´s for user assignment and slotto insert legend text
Navigation Keys convenient menu
operation
9-poleservice interface standard cable DIGSI 4
Width of housing
1/2 of 19" or 1full 19“ rack
SIPROTEC 7SA522 Front design
4 freely assignable function keys with slot for legend text
Distance protection Info - 5EV S V13/ Claus/ 21.08.00
Width of housing1/2 of 19" or full 19"
4 Voltage Transformers (VT)
4 Current Transformers (CT)option with Ienormal or Iesensitive
Binary inputs 8 (16*, 24*)Output contacts 16 (24*,32*)
(*in full 19“ rack housing)
Time synchronizationGPS with IRIG-B and DCF-77
System interfaceelectric or fibre optic IEC60870-5-103 or Profibus
FMS (approx. 12/00)in future DNP3.0, MODBUS
and Profibus DP Service interfaceelectrical or fibre optic (FO)DIGSI 4 via Modem
Remote relay interface (plan)electric or fibre optic (FO)for protection signalling
Open to new techniques (methods)
electric or fibre optic (FO)process or 2nd remote relay
interface
SIPROTEC 7SA522 Terminals and Communication Interfaces
Distance protection Info - 6EV S V13/ Claus/ 21.08.00
7SA522Connection Diagram: Basic Version
Front Port
System/Scada
Service PortDIGSI, Modem
IRIG-B A
B
C
Remote RelayInterface #1
D
Remote RelayInterface #2
E
Version Width No. ofBinaryInputs
No. ofOutputRelays
Basic ½ x 19“ 8 16Medium 1/1 x 19“ 16 24Maximum 1/1 x 19“ 24 32
OptionalSensitivity:• normal• high (5mA)
Connection:• Ven• Vsync• Vx
Live status contactNC or NO with Jumper
=
=(~)
IL1
IL2
IL3
I4
VL1
VL2
VL3
V4
Q1
Q3
Q5
Q7
Q2
Q4
Q6
Q8
SerialInterfaces
K1+
-K2
K3
K4
K5K6K7K8K9K10K11K12K13K14K15K16
R1R2R3R4R5R6R7R8R9R10R11R12BO 15
BO 14
BO 13
Fast BO1
Fast BO2Fast BO3Fast BO4
Fast BO5
Fast BO6
Fast BO7
BO8BO9BO10BO11
BO12
K17K18J1J2J3
J4J5J6
J7J8J9J10J11
BI 1
BI 2
BI 3
BI 4
BI 5
BI 6
BI 7
BI 8J12
R15
R16
R17
R18
R13
R14
Distance protection Info - 7EV S V13/ Claus/ 21.08.00
52
7SA522Single Line Diagram
21
Distance
21N
6868T
PowerSwing
FL
FaultLocator
85-21
PilotDist.
Weakinfeed
27WI
Teleprotection schemescan use one channel ortwo redundant channels to the remote end
50N51N
GndO/C
67N
DirectionalGround
85-67N
PilotGnd
50HS
Switchonto-Flt. O/C
50BF
Bkr.fail.
59
Over-voltage
25
Synchro-check
79
Auto-reclosure
74TC
Trip Circuitsupervision
86
Lockout
Local/Tele Ctrl.CommandsCB Indications
5051
Over-current
50N-251N-2
50STUB
STUB O/C
Operat.values
Super-vision
Serial CommunicationInterfaces
CFC Logic
!
Distance protection Info - 8EV S V13/ Claus/ 21.08.00
ANSI-No.
17.10.97en513all7
21, 21N
FL
85-21
SIPROTEC 7SA522 Scope of functions (1)
Distance Protection quadrilateral and/or MHO characteristic
full scheme measurement with sophisticated loop selection
three phase and single phase tripping
five independent zones and one controlled overreach zone
all zones can be set forward/reverse/non-directional
with/without parallel line compensation
special filtering for CVT transients
special algorithm for detection and compensation of CT saturation
Fault Locator with/without parallel line compensation
Universal teleprotection interface (PUTT, POTT, Blocking, Unblocking, DTT...)
Distance protection Info - 9EV S V13/ Claus/ 21.08.00
17.10.97en513all8
50N, 51N, 67N
85-67N
WI
68
ANSI-No.
SIPROTEC 7SA522 Scope of functions (2)
High resistance earth fault protection for earthed systems
directional and/or non-directional
4 stages
definite-time and/or inverse-time characteristic
high sensitivity (3 mA secondary)
backup protection running in parallel to the distance protection
Teleprotection interface for earth fault protection (Directional comparison, Blocking, Unblocking)
Weak infeed protection(Echo and Trip)
Power swing blocking/out-of-step tripping
Distance protection Info - 10EV S V13/ Claus/ 21.08.00
ANSI-No.
50, 5150N-2, 51N-2
59
50HS
50-STUB
79
25
50BF
SIPROTEC 7SA522 Scope of functions (3)
Overcurrent protection DMTL/IDMTL as parallel or emergency function
Overvoltage protection
Fast tripping with switch-onto-fault condition
STUB Bus Overcurrent protection
Single and three pole multishot automatic reclosure
Synchro-check
Circuit-breaker failure protection
Distance protection Info - 11EV S V13/ Claus/ 21.08.00
SIPROTEC 7SA522 Scope of functions (4)
Trip Circuit Supervision
Lock Out
Oscillographic Fault Recording
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)
Remote relay interfaces #2 (planned for teleprotection)
ANSI-No.
74TC
86
FR
47
* available in Version 4.2 approx. 1. Q/01
Distance protection Info - 12EV S V13/ Claus/ 21.08.00
SIPROTEC 7SA522 Quadrilateral Zone Characteristic
X
R
forwards
forwards
reverse
reverse
LoadLoad
Z1
Z2
Z4
Z3
Z1B
Z5
Line
Distance protection Info - 13EV S V13/ Claus/ 21.08.00
SIPROTEC 7SA522 MHO Zone Characteristic
X
R
Z1
Z2
Z4
Z1B
Z5Line
Z3 (if revers)
Load Load
Distance protection Info - 14EV S V13/ Claus/ 21.08.00
MHO characteristic Effect of polarization
Example: 2 phase fault B-C
Symbols:
ZR zone setting
V BC measured fault voltage
I B, I C measured fault currents
k pol polarization factor (0.15%)
a > 90° and b < 90°--> internal fault
b
aWithout memorypolarization
With memorypolarization
Re( V )
V Pol
V BC
Z R x ( I B - I C)
Im( V )
delta V = Z R x (I B - I C) - V BC
kpol x (V BC, memory - V BC)
Distance protection Info - 15EV S V13/ Claus/ 21.08.00
SIR=1 (A-G)
0
5
10
15
20
25
30
35
40
45
50
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
% of zone setting
trip
pin
g t
ime (
ms)
EPAC 3000 Doku
SEL321 Doku
7SA522 gemessen
EPAC31/35
7SA522 - Trip time curves at SIR = 1
Distance protection Info - 16EV S V13/ Claus/ 21.08.00
7SA522 - 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
Distance protection Info - 18EV S V13/ Claus/ 21.08.00
7SA522 - Teleprotection Schemes
Configuration
Distance protection Info - 19EV S V13/ Claus/ 21.08.00
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
7SA522 - Phase segregated Teleprotection
Distance protection Info - 20EV S V13/ Claus/ 21.08.00
7SA522 - Teleprotection with three-terminal lines
Software provides teleprotection of three-terminal lines without additional logic
Distance protection Info - 21EV S V13/ Claus/ 21.08.00
17.10.97en513ase2
7SA522 - Echo and Tripping in case of no-infeed or weak-infeedConfiguration
Settings
Note: The echo signal must be marshalled in addition to the send signal on the transmission signal contact
Matrix
The receive signal is derived from :
and
Phase segregated weak-infeed tripping
*Three-terminal schemes are supported as well
!
Distance protection Info - 22EV S V13/ Claus/ 21.08.00
7SA522High Resistance Earth Fault Protection (1)
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 0.005 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
Distance protection Info - 23EV S V13/ Claus/ 21.08.00
7SA522 High Resistance Earth Fault Protection (2)
3I0
T
T3I0>>
3I0>
T3I0>
T3I0>>>
3I0>> 3I0>>>
Definite-time characteristic
Distance protection Info - 24EV S V13/ Claus/ 21.08.00
7SA522 High Resistance Earth Fault Protection (3)
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
Distance protection Info - 25EV S V13/ Claus/ 21.08.00
7SA522 High Resistance Earth Fault Protection (4)
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
Distance protection Info - 26EV S V13/ Claus/ 21.08.00
7SA522 High Resistance Earth Fault Protection (5)
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
Distance protection Info - 27EV S V13/ Claus/ 21.08.00
7SA522 High Resistance Earth Fault Protection (6)
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
Distance protection Info - 28EV S V13/ Claus/ 21.08.00
7SA522 High Resistance Earth Fault Protection (6)
-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>>
Distance protection Info - 29EV S V13/ Claus/ 21.08.00
7SA522 High Resistance Earth Fault Protection (7)
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 11f/fn
Distance protection Info - 30EV S V13/ Claus/ 21.08.00
7SA522 - STUB 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:
Distance protection Info - 31EV S V13/ Claus/ 21.08.00
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)
7SA522 - 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