SIEMENS PTD-HA/3000467425/ED2.121.001.W-0 Document no.- Rev - 2 RELAY SETTING CALCULATION 220 KV DURSHED FEEDER - 2 DISTANCE PROTECTION RELAY NEW 400/220KV SUBSTATION AT WARANGAL LOA REF: C-55807-S119A-7/LOA-1/2020 DATED 31.03.2006 POWERGRID CORPORATION OF INDIA LIMITED Name Department Telephone Place Date Signature Author: Approval: LAXMINARAYAN PTD-HA 0124-2846155 GURGAON - Rev Date Revised items Remarks 1 04.10.08 FOR APPROVAL KNR RL 2 19.12.08 SETTING REVISED ALL KNR RL Total pages 25 Siemens Ltd., PTD Division Copying this document, and giving it to others and the use or communication of the contents thereof, without express authority. Offenders are liable to the payment of damages. All rights are reserved i the grant of patent or registration of a utility model or design TRANSMISSION SYSTEM ASSOCIATED WITH GRID STRENGTHENING FOR TAMILNADU & ANDRA PRADESH Page no Name of reviser Name of Approver
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1 Postive sequence resistance = line length x + ve seq. R x Imp Ratio = 2.370 ohms
2 Postive sequence reactance = line length x + ve seq. X x Imp Ratio = 12.090 ohms
3 Zero sequence resistance = line length x Z0 x Imp Ratio = 7.650 ohms
4 Zero sequence reactance = line length x Z0X x Imp Ratio = 45.300 ohms
5 Zero sequence mutual resistance = line length x MR x Imp Ratio = 0.000 ohms
6 Zero sequence mutual reactance = line length x MX x Imp Ratio = 0.000 ohms
H Adjacent Line Impedance in CT secondary
1 Postive sequence resistance = line length x + ve seq. R x Imp Ratio = 1.675 ohms
2 Postive sequence reactance = line length x + ve seq. X x Imp Ratio = 8.544 ohms
3 Zero sequence resistance = line length x Z0 x Imp Ratio = 5.406 ohms
4 Zero sequence reactance = line length x Z0X x Imp Ratio = 32.012 ohms
I Longest Line Impedance in CT secondary
1 Postive sequence resistance = line length x + ve seq. R x Imp Ratio = 2.244 ohms
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2 Postive sequence reactance = line length x + ve seq. X x Imp Ratio = 11.445 ohms
3 Zero sequence resistance = line length x Z0 x Imp Ratio = 7.242 ohms
4 Zero sequence reactance = line length x Z0X x Imp Ratio = 42.884 ohms
J Zone I : Reach Setting Proposed at 80% of the protected Line
1 Reach For Postive sequence resistance
(80% line length x Postive sequence resistance x Imp Ratio
=0.8 x 75 x 0.079 x 0.4 1.896 ohms
2 Reach For Postive sequence reactance
(80% line length x Postive sequence reactance x Imp Ratio
=0.8 x 75 x 0.403 x 0.4 9.672 ohms
3 Reach For Zero sequence resistance
(80% line length x Zero sequence resistance x Imp Ratio
=0.8 x 75 x 0.255 x 0.4 6.120 ohms
4 Reach For Zero sequence reactance
(80% line length x Zero sequence reactance x Imp Ratio
=0.8 x 75 x 1.51 x 0.4 36.240 ohms
5 Fault Resistance - ph-e
= 1.896 + ( 9.672 x TAN ( 25 ) = 6.406
= 4.5 x 1.896 = 8.5320
= 50 x 0.4 = 20.000
Maximum of 6.406 and 20 = 20.000
Minimum of 8.532 and 20 = 8.532 ohms
Hence fault resistance between phase to earth = 8.532 ohms
6 Fault Resistance - ph-ph
= 1.896 + ( 9.672 x TAN ( 25 ) = 6.406
= 3 x 1.896 = 5.688
= 10 x 0.4 = 4.000
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Maximum of 6.406 and 4 = 6.406
Minimum of 5.688 and 6.406 = 5.688
Hence fault resistance between phase to phase =2 times of the above 11.376 ohms
K Zone II: Reach Setting at (100% of the protected Line +
50% of the shortest line at Next substation)
1 Reach For Postive sequence resistance
100% line length x Postive sequence resistance x Imp Ratio +
50% shortest line length x Postive sequence resistance x Imp Ratio
=75 x 0.079 x 0.4 + 0.5 x 75 x 0.079 x 0.4 3.207 ohms
2 Reach For Postive sequence reactance
100% line length x Postive sequence reactance x Imp Ratio +
50% shortest line length x Postive sequence reactance x Imp Ratio
=75 x 0.403 x 0.4 + 0.5 x 75 x 0.403 x 0.4 16.362 ohms
3 Reach For Zero sequence resistance
100% line length x Zero sequence resistance x Imp Ratio +
50% shortest line length x Zero sequence resistance x Imp Ratio
=75 x 0.255 x 0.4 + 0.5 x 75 x 0.255 x 0.4 10.353 ohms
4 Reach For Zero sequence reactance
100% line length x Zero sequence reactance x Imp Ratio +
50% shortest line length x Zero sequence reactance x Imp Ratio
=75 x 1.51 x 0.4 + 0.5 x 75 x 1.51 x 0.4 61.306 ohms
5 Fault Resistance - ph-e 14.432 ohms
6 Fault Resistance - ph-ph 19.242 ohms
L Zone III: Reach Setting Proposed at 110% of the prot Line & 100%of the longest line
1 Reach For Postive sequence resistance
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110% line length x Postive sequence resistance x Imp Ratio +
100% Longest line length x Postive sequence resistance x Imp Ratio
= 1.1 x 75 x 0.079 x 0.4 + 71 x 0.079 x 0.4 4.851 ohms
2 Reach For Postive sequence reactance
110% line length x Postive sequence reactance x Imp Ratio +
100% Longest line length x Postive sequence reactance x Imp Ratio
= 1.1 x 75 x 0.403 x 0.4 + 71 x 0.403 x 0.4 24.744 ohms
3 Reach For Zero sequence resistance
110% line length x Zero sequence resistance x Imp Ratio +
100% Longest line length x Zero sequence resistance x Imp Ratio
= 1.1 x 75 x 0.255 x 0.4 + 71 x 0.255 x 0.4 15.657 ohms
3 Reach For Zero sequence reactance
110% line length x Zero sequence reactance x Imp Ratio +
100% Longest line length x Zero sequence reactance x Imp Ratio
= 1.1 x 75 x 1.51 x 0.4 + 71 x 1.51 x 0.4 92.714 ohms
5 Fault Resistance - ph-e 20.000 ohms
6 Fault Resistance - ph-ph 29.104 ohms
M Power Swing Block Function
1
2 27.219
3 32.671
4 34.023
5 40.839
Reactive direction are set so that the inner characteristic covers completely all the distance protection zones,which are to be blocked by the PSD function.At least 10%of additional safely margin
Reactive Reach of the Inner characteristic of the Power swing blocking element = 1.1* X3
Reactive Reach of the Inner characteristic of the Power swing blocking element = 1.1(2R3+Rf)
Reactive Reach of the Outer characteristic of the Power swing blocking element
Reactive Reach of the Outer characteristic of the Power swing blocking element
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N Source Impedance refered to CT secondary
1 Local End Z magnitude 1.270
2 Local End Z argument 80.000
3 Remote End Z magnitude 2.580
4 Remote End Z argument 80.000
5 Postive sequence resistance at local end in ohms(RISA) 2.370
6 Postive sequence reactance at local end in ohms(XISA) 12.090
7 Postive sequence resistance at remote end in ohms(R1SB) 1.675
8 Postive sequence reactance at remote end in ohms(X1SB) 8.544
O Phase Selection
1 X1Phs 49.488
2 X0Phs 185.428
3 Calculated RFPEphs 56.905
4 Calculated RFPPphs 49.701
5 104.544
6 RFPEphs 52.272
7 Conditions for 2nd Zone 35.158
8 Conditions for 4th Zone 5.003
9 Conditions for 3-ph fault 62.212
10 RFPPphs 49.701
11.288 16.746
Zloadmin =(KV)2\MVA
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400/220 KV WARANGAL SUBSTATION
220kV yyyyyyyyyy FEEDER
ABB DISTANCE PROTECTION RELAY SETTING
Type : ABB make REL670
DESCRIPTION PARAMETER SETTING RECOMMENDED
Max. load current \ CT primary current lb (FLC \ CT Primary) 0.492
lminop 0.200
Distance Protection zone 1
operating mode and directionaity of zone I operation Forward
Settings of Phase to Phase measurement
Operation of distance protection zone I for Ph-I Operation PP On
Positive sequence reactance of zone 1 for ph-ph fault X1PP 9.672
Positive sequence reactance of zone 1 for ph-ph fault R1PP 1.896
Resisitive reach of distance protection for ph-ph faults RFPP 11.376
Timer t1PP On
t1PP 0.000
Settings of Phase to earth element
Operation of distance protection zone I for Ph-I Operation PE On
X1PE 9.672
Positive sequence resistive reach of distance zone 1 for ph-E fault R1PE 1.896
XOPE 36.240
ROPE 6.120
Resisitive reach for zone 1 Ph-E faults RFPE 8.532
Timer t1PP On
t1PE 0.000
Operating mode of time delayed trip for the distance protection zone 1 for ph-ph faults
Time delayed trip operation for the distance protection zone 1 for ph-ph faults
Zero sequence line reactance included in distance protection zone I for Ph-E faults
Zero sequence line reactance included in distance protection zone I for Ph-E faults
Operating mode of time delayed trip for the distance protection zone 1 for ph-E faults
Time delayed trip operation for the distance protection zone 1 for ph-ph faults
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Distance Protection zone II ZONE II
operating mode and directionaity of distance zone II operation Forward
Settings of Phase to Phase measurement
Operation of distance protection zone 2 for Ph-Ph fault Operation PP On
Positive sequence reactance of zone 2 for ph-ph fault X1PP 16.362
Positive sequence reactance of zone 2 for ph-ph fault R1PP 3.207
Resisitive reach of distance protection for ph-ph faults RFPP 19.242
Timer t1PP On
t1PP 0.400
Settings of Phase to earth element
Operation of distance protection zone 2 for Ph-E faults Operation PE On
X1PE 16.362
Positive sequence resistive reach of distance zone 2 for ph-E fault R1PE 3.207
XOPE 61.306
ROPE 10.353
Resisitive reach for zone 2 Ph-E faults RFPE 14.432
Timer t1PP On
t1PE 0.400
Distance protection zone lll ZONEIII
Operating mode and directionality of zone 3 Operation Forward
SETTINGS OF PHASE TO PHASE MEASUREMENT
Operation of Distance protection Zone 3 for Ph fault Operation PP On
Positive sequence reactance of zone 3 for phase to phase faults X1PP 24.744
Positive sequence resistance of zone 3 for phase to phase faults R1PP 4.851
Positive reach of distance protectin for phase to phase faults RFPP 29.104
Operating mode of time delayed trip for the distance protection zone 2 for ph-ph faults
Time delayed trip operation for the distance protection zone 2 for ph-ph faults
Zero sequence line reactance included in distance protection zone 2 for Ph-E faults
Zero sequence line reactance included in distance protection zone 2 for Ph-E faults
Operating mode of time delayed trip for the distance protection zone 2 for ph-E faults
Time delayed trip operation for the distance protection zone 2 for ph-ph faults
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Timer t3PP On
t3PP 1.000
SETTINGS OF PHASE TO EARTH MEASUREMENT
Operating mode of distance protection zone 3 for Ph-E faults Operation PE On
Positive sequence reactive reach of distance zone 3 for Ph-E faults X1PE 24.744
Positive sequence resistive reach of distance zone 3 for Ph-E faults R1PE 4.851
X0PE 92.714
R0PE 10.353
Resistive reach for zone 3 for Ph-E faults RFPE 20.000
Timer t3PE On
t3PE 1.000
Manual energising time T manenerg 0.200
PHASE SELECTION
operation of phase selection operation On
positive sequence reactive reach for ph-ph loop measurement X1PP 24.744
Resistive reach for ph-ph loop measurement RFPP 29.104
positive sequence reactive reach for ph-e loop measurement X1PE 24.744
Zero sequence reactive for ph-e loop measurement XOPE 92.714
Resistive reach for ph-e loop measurement RFPE 20.000
Power swing blocking PSB
power swing function on/off operation On
Operating mode of internal PSD function detection on
positive sequence reactive reach of the inner boundary X1IN 27.219
positive sequence reactive reach of the inner boundary R1IN 32.671
reach multiplication for the outer reactive boundary KX 1.250
reach multiplication for the outer reactive boundary KR 1.250
Initial PSD timer tp1 0.045
Fast PSD timer tp2 0.015
Operating mode of time delayed trip for the distance protection zone 3 for Ph-Ph faults
Time delaye trip operation for the distnce protection zone 3 for Ph-Ph faults
zero sequence line reactance included in distance protection zone 3 for Ph-E faultsZero sequence line reactance included in distance protection zone 3 for Ph-E faults
Operating mode of time delayed trip for the distance protection zone 3 for Ph-E faultsTime delayed trip operation of the distance protection zone 3 for Ph-E faults
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Hold timer for activation of fast PSD timer tw 0.250
Hold timer for PSD detected th 0.5s
Timer over coming 1-phase reclosing dead time tEF 3 s
Timer to time delay block by the residual current tR1 0.300
On delay timer for blocking of output signal at very slow swings tR2 2.000
Scheme communication logic Zcom
Operation of zoom scheme communication logic Operation On
Operation mode Schemetype Permissive UR
Coordination timer T coord 0.050s
Minimum duration of a carrier send signal T sendmin 0.1s
Operation mode for an unblocking signal Unblock Off
Security timer T security 0.035s
Operation mode of current reversal function Currev Off
Pick up time of current reversal function T pickup NA
Time delay for current reversal T delay NA
Operation mode of WEI function WEI Off
Coordination time for WEI function Twei NA
Voltage detection for PH-E faults UPN< NA
voltage detection for Ph-Ph faults UPP< NA
Automatic SOTF SOTF
Operation of SOTF Operation On
FUSE FAILURE FUNCTION FFR
FFR zero sequence function On\Off Zeroseq On
Operating value of voltage U0 3U0> 0.100
Operating value of current I0 3Uo< 0.100
BROKEN CONDUCTOR SUPERISION SSUP
Broken conductor function On\Off Operation On
Operating phase current as a% IP> 0.100
Time delay T 0.200
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Loss of voltage YU<
Loss of voltage function On\Off Operation On
Operating phase voltage as a% UPE< 0.700
overload I>
Overload function On\Off Operation On
operating value of phase current IP> 1.000
Time delay T 20s
FAULT LOCATOR
Unit for presentation of line length Length unit Km
Length of protected line Line length 75.000
Positive sequence reactance of line X1 30.225
Positive sequence resistance of line R1 5.925
zero sequence reactance of line X0 113.250
Zero sequence resistance of line R1 19.125
Positive sequence reactance of source at local end X1SA 30.225
Positive sequence resistance of source at local end R1SA 5.925
Positive source reactance at remote end X1SB 21.359
Positive source resistance at remote end R1SB 4.187
Zero sequence mutual reactance for double circuit line XM0
Zero sequence mutual resistance for double circuit line RM0
Selection of presentation mode for the distance to fault * Distance unit Km
Analogue signal name** Name
Primary phase-phase voltage VT prim 220.000
Primary rated current CT prim 800.000
NOTES: ALL parameters of fault locator are set in the menu-settings-functions-group n-line.reference
*Settings done in menu: settings - Distrbreport-faultlocator
**settings done in menu:configuration-analogue inputs-u1,u2 etc
SYNCRO CHECK AND ENERGISATION CHECK FUNCTIONS:
Operation of syncro check function Operation On
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Reference voltage either phase to ground or phase to phase Input phase L1
Phase shift between U bus & U line Phase shift 10.000
Voltage ratio between U bus & Uline U ratio 1.000
Bus arrangment for voltage selection U selection single bus