Distance Relay Setting calculation

LIN E NA CALCULATION FOR THE RELAY REL670 ME : distace relay setting

A 1 2 3 4 5 6 7 8 9

System Particulars Line Parameters Rated Line Voltage in KV Line Length in kms Max. Power Flow in the Line in MVA Positive seqence Resistance in ohms/km Positive Sequence Reactance in ohms/km Zero sequence Resistance in ohms/km Zero sequence reactance in ohms/km Zero Sequence Mutual Resistance in ohms/km Zero Sequence Mutual Reactance in ohms/km

B a) 1 2 3 4 5 b) 1 2 3 4 5 c) 1 2 3 4 5 6 d) 1 2 3 4 5

Adjoining Line parameters Shortest Line Length of shortest line in kms Positive Sequence Resistance in ohms/km Positive Sequence Reactance in ohms/km Zero Sequence Resistance in ohms/km Zero sequence Reactance in ohms/km Longest Line Length of longest line Positive Sequence Resistance in ohms/km Positive Sequence Reactance in ohms/km Zero Sequence Resistance in ohms/km Zero sequence Reactance in ohms/km Transformer Transformer Impedance in pu Transformer MVA Positive Sequence Resistance in ohms/km Positive Sequence Reactance in ohms/km Zero Sequence Resistance in ohms/km Zero sequence Reactance in ohms/km Shortest Line (Reverse) Length of shortest line in kms Positive Sequence Resistance in ohms/km Positive Sequence Reactance in ohms/km Zero Sequence Resistance in ohms/km Zero sequence Reactance in ohms/km

Source Impedance FAULT MVA at Local-End (Maximum) 1 FAULT MVA at Local-End (Minimum) FAULT MVA at Local-End FAULT MVA at Remote-End (Maximum) FAULT MVA at Remote-End (Minimum) ( When BC at S/S O is off, this feeder acts as a 2 radial feeder radial feeder and there will not be any infeed from the remote end. Source impedance angle in deg 3 Angle in radians 4

400 55 600.00 0.0298 0.332 0.1619 1.24 0.2281 0.622

52 0.0298 0.332 0.1619 1.24 70 0.0298 0.332 0.1619 1.24 N/A N/A N/A N/A N/A N/A 52 0.0298 0.332 0.1619 1.24

C

20000 18000 19000 18000 16000

17000 80 1.3968

Assumed as 50% of zero sequence impedanc e

5 6 7 8

Positive Sequence Resistance at local end, in ohms Positive Sequence Reactance at local end, in ohms Positive Sequence Resistance at remote end, in ohms Positive Sequence Reactance at remote end, in ohms

D 1 2 3 4

CT/PT Detail CT primary rating in A CT secondary rating in A PT primary rating in V PT secondary rating in V

E 1 2

Relay Detail Rated Current in A Rated Voltage in V

0.000 8.600 0.000 9.200

3000 1 400000 110

1 110

1 2 3 4 5 6 7 1 2 3 4 1 2 3 4

1 2 3 4 1 2 3 4 5 6

1 2 3 4 5 6 1

SYSTEM PARAMETERS Fault Resistance in primary for phase - earth faults Fault Resistance in primary for phase - earth faults Fault Resistance in primary for phase - earth faults Fault Resistance in primary for phase - phase faults Fault Resistance in primary for phase - phase faults Fault Resistance in primary for phase - phase faults Imp Ratio = CTR/PTR zone-1 setting - % of the protected line zone 2 setting - % of the shortest adjoining line zone53setting setting--% %of ofthe theadjacent longest adjoining line in reverse zone shortest line direction Line Impedance in secondary Positive seqence Resistance in ohms Positive Sequence Reactance in ohms Zero sequence Resistance in ohms Zero sequence reactance in ohms Zero Sequence Mutual Resistance in ohms Zero Sequence Mutual Reactance in ohms Line Angle Shortest Line (Forward) Positive Sequence Resistance in ohms Positive Sequence Reactance in ohms Zero Sequence Resistance in ohms Zero sequence Reactance in ohms Shortest Line (Reverse) Positive Sequence Resistance in ohms Positive Sequence Reactance in ohms Zero Sequence Resistance in ohms Zero sequence Reactance in ohms Longest line section Positive Sequence Resistance in ohms Positive Sequence Reactance in ohms Zero Sequence Resistance in ohms Zero sequence Reactance in ohms Zone-1 setting Positive sequence Resistance in ohms Positive Sequence Reactance in ohms Zero sequence Resistance in ohms Zero sequence reactance in ohms Fault Resistance (ph-ph) Fault Resistance (ph-e) Zone-2 setting Positive seqence Resistance in ohms Positive Sequence Reactance in ohms Zero sequence Resistance in ohms Zero sequence reactance in ohms Fault Resistance (ph-ph) Fault Resistance (ph-e) Zone-3 setting Positive seqence Resistance in ohms

20 Assumed 25 Assumed 30 Assumed 5 Assumed 8 Assumed 10 Assumed 0.825 80% 50% 120% 25% 1.3522 15.065 7.346 56.265 10.35 28.223 85 1.278 14.243 6.946 53.196 1.27842 14.2428 6.94551 53.196

1.721 19.173 9.35 71.61 1.082 12.052 14.157 67.59 6.289 21.94

7.331 33.876

5.877 45.012

1.9912 22.1865 26.344 125.198 10.5824 30.7338

13.7445 63.5175

10.819 82.863

3.4174

Positive Sequence Reactance in ohms 38.0726 Zero sequence Resistance in ohms 39.266 20.1586 18.566 Zero sequence reactance in ohms 198.643 93.159 142.197 Fault Resistance (ph-ph) 15.0848 Fault Resistance (ph-e) 40.116933 Zone-5 setting Positive seqence Resistance in ohms 0.319605 1 Positive Sequence Reactance in ohms 3.5607 2 Zero sequence Resistance in ohms 1.7363775 3 Zero sequence reactance in ohms 13.299 4 5 Fault Resistance (ph-ph) 4.76421 6 Fault Resistance (ph-e) 16.02315 The General Fault Criterion is an overall impedance measuring element with a very high reach and a 2 3 4 5 6

long time delay for its tripping function.The GFC can be operated in two modes - the under impedance mode and the over current mode.In the under impedance mode, the GFC characteristic should, in general, cover all the impedance measuring zones used for distance protection, regardless of their directionality. Normally set to 2 times of zone-3 with a limit on the resistive direction so that the characteristics does not enter the load area. Load Impedance (primary) Load impedance (secondary)

266.66667 220

General Fault Criterion Positive sequence reactance for ph-ph & ph-e elements in the forward direction (2 * X3) Positive sequence reactance for ph-ph & ph-e elements in the reverse direction(20% of for forward Positive sequence Resistance phasereach) to phase faults for forward and Reverse reach for (2[2*R3 Rf]) Positive sequence Resistance phase+ to earth faults for forward and Reverse reach (2[1/3(2R3 + Zero sequence reactance for ph-e elements R03)+Rf]) in the forward directionreactance (2 * X03)for ph-e elements in the Zero sequence reverse direction (20% of forward reach) RLd - the resistive reach in the load impedance area Load Angle ARGLd

76.1452 7.61452 43.8392 110.96773 397.286 39.7286 110.96773 25 Assumed

Power Swing Block Function The reach of the Inner characteristic in the resistive and 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. AtReactive least 10% of additional safety margin is considered Reach of the Inner characteristic of the Power swing blocking = 1.1*X3 45.68712 Resistive Reachelement of the Inner characteristic of the Power swing blocking 18.10176 Reactive Reachelement=1.1(2R3+Rf) of the Outer characteristic of the Power swing blocking element 57.1089 Resistive Reach of the Outer characteristic of the Power swing blocking element 22.6272

LINE NAME :

distace relay setting

PARAMETER SETTING SETTING RANGE RECOMMENDED General setting Ib (FLC/CT Primary) 0.35 Iminop (10-30) % of Ib 20% ZONE I Operation Off,nondir,forward,rever Forward Settings of phase to phase measurement Operation PP On/Off On X1PP (0.01-400) 12.052 R1PP (0.01-400) 1.082 RFPP (0.01-400) 6.289 Timer t1PP Off,On On t1PP (0.0-60) 0 Settings for phase to earth element Operation PE On,Off On X1PE 0.01-400 12.052 R1PE 0.01-400 1.082 X0PE Group-I 67.59 0.01-1200 Group-II 33.876 Group-III 45.012 R0PE Group-I 14.157 0.01-1200 Group-II 7.331 Group-III 5.877 RFPE 0.01-400 21.94 Timer t1PE Off,On On t1PE 0-60 0

PARAMETER SETTING SETTING RANGE RECOMMENDED ZONE II Operation Off,nondir,forward,rever Forward Settings of Phase to phase measurement Operation PP On/Off On X1PP (0.01-400) 22.1865 R1PP (0.01-400) 1.9912 RFPP (0.01-400) 10.5824 Timer t2PP Off,On On t12P (0.0-60) 0.4 Settings of phase to earth measurement Operation PE On,Off On X1PE 0.01-400 22.1865 R1PE 0.01-400 1.9912 X0PE Group-I 125.198 0.01-1200 Group-II 63.5175 Group-III 82.863 R0PE Group-I 26.344 0.01-1200 Group-II 13.7445 Group-III 10.819 RFPE 0.01-400 30.734 Timer t2PE Off,On On

t2PE

0-60

0.4

PARAMETER SETTING SETTING RANGE RECOMMENDED Zone III Operation Off, nondir, forward, rev Forward Settings of Phase to Phase measurement Operation PP On/Off On X1PP (0.01-400) 38.0726 R1PP (0.01-400) 3.4174 RFPP (0.01-400) 15.0848 Timer t3PP Off,On On t3PP (0.0-60) 1 Settings of phase to earth measurement Operation PE On,Off On X1PE 0.01-400 38.0726 R1PE 0.01-400 3.4174 X0PE Group-I 198.643 0.01-1200 Group-II 93.159 Group-III 142.197 R0PE Group-I 39.266 0.01-1200 Group-II 20.1586 Group-III 18.566 RFPE 0.01-400 40.1169333333 Timer t3PE Off,On On t3PE 0-60 0.8 PARAMETER SETTING SETTING RANGE RECOMMENDED Zone V Zone 5 Operation Off, nondir, forward, rev Reverse Settings of Phase to Phase measurement Operation PP On/Off On X1PP (0.01-400) 3.5607 R1PP (0.01-400) 0.319605 RFPP (0.01-400) 4.76421 Timer t5PP Off,On On t5PP (0.0-60) 1 Settings of phase to earth measurement Operation PE On,Off On X1PE 0.01-400 0.16 R1PE 0.01-400 0.032 X0PE 0.01-1200 0.536 R0PE 0.01-1200 0.108 RFPE 0.01-400 0.72 Timer t5PE Off,On On t5PE 0-60 0.8

PARAMETER SETTING SETTING RANGE GFC General settings Operation On,Off Timer t PP On,Off tPP 0-60 Timer t PE On,Off tPE 0-60 Over current operating mode Operation I> On,Off IP> 10-400 In> 10-150 I> (10-50)% of Ir GFC (Settings of Under Impedance mode) Operation On,Off Opoeration 3Io< BCS Operation IP> T DLD Operation U< IP< I> Operation IP> T Fault Locator Length unit Line length X1 R1 X0 R0 X1SA R1SA X1SB R1SB Xm0 Xm0 Xm0 Rm0 Rm0 Rm0 Distance unit VT Prim CTPrim

SETTING RANGE On/Off

0.04 Off NA NA NA RECOMMENDED On

On,Off 10-50% 10-50%

On 20% 10%

On,Off 10-100% 0-60

On 10% 20

On,Off 10-100% 5-100% of Ib

On 40% 10%

On.Off 20-300% 0-9000 Km/mile 0-10000 0.001-1500 (0.001-1500) (0.001-1500) (0.001-1500) (0.001-1500) (0.001-1500) (0.001-1500) (0.001-1500) Group-I (0.001-1500) Group-II Group-III Group-I (0.001-1500) Group-II Group-III %/Km/mile 1-9999 kV 1-9999 A

On 110% 20 s Km 55 15.065 1.3522 56.265 7.346 8.6 0 9.2 0 28.223 28.223 0 10.35 10.35 0 Km 400 3000