CSC Distance Relays -Sample Calculation

December 6, 2017 | Author: 1453h | Category: N/A
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Short Description

Sample calculation for Distance relay setting for 132 KV lines...

Description

Easun Reyrolle Limited, India

INPUT DATA for CSC 101 / CSC 162 Relays: 1 Voltage Level (KV) 2 PT Ratio 3 CT Ratio 4 Positive seq. Resistance(R1) / Km 5 Positive seq. Reactance(X1) / Km 6 Zero seq. Resistance(R0) / Km 7 Zero seq. Resistance(X0) / Km 8 Line Length (Km) 9 Maximum Load Current (Primary in A) 10 Operating Power Factor 11 Zone 1 Settings required in % 12 Zone 2 Settings required in % 13 Zone 3 Settings required in % 14 Zone 4 Settings required in % 15 Zero Seq. Mutual Reactance (Xm0)

Fill the following Data 132.0000 1200 400.0000 0.1540 0.3870 0.3030 1.4096 9.5571 400.0000 0.8550 80.0000 150.0000 400.0000 25.0000 0.0000

SETTINGS TO BE ADOPTED (CT Secondary Rated : 1A, PT Secondary : 110V P-P) 1 KV, CTR, LL

( As It Is)

2 Kr

0.323

3 Kx

0.881

4 Km

0.000

5 R_Line

0.491

6 X_Line

1.233

7 R1_PE

0.986

8 X1_PE

0.986

9 R2_PE

2.585

10 X2_PE

1.849

11 R3_PE

6.894

12 X3_PE

4.931

13 R4_PE

0.431

14 X4_PE

0.308

15 R1_PP

0.986

16 X1_PP

0.986

17 R2_PP

2.585

18 X2_PP

1.849

19 R3_PP

6.894

20 X3_PP

4.931

21 R4_PP

0.431

22 X4_PP

0.308

23 Max Load Resistance Observed on Ohms

32.300

Note : Select the Resitance Value of the Z3 or Z4 such that it should be less than the Max. Load Resistance Calculated Created By: G.Mahendiran Deputy Manager - Product Management Easun Reyrolle Limited Hosur, India - 635 126 Moile : +91 99524 25301. Email : [email protected] All Rights Reserved to M/s. Eaun Reyrolle Limited., Any form of Reproduction of this copy is prohibited.

EASUN REYROLLE LIMITED, xxxxxxxxxxxxxxxxx INPUT DATA for CSC 101 / CSC 162 Relays:

INPUT

1

Voltage Level (KV)

132

2

PT Ratio

1200

3

CT Ratio

400

4

Positive seq. Resistance(R1) / Km

0.154

5

Positive seq. Reactance(X1) / Km

0.387

6

Zero seq. Resistance(R0) / Km

0.303

7

Zero seq. Resistance(X0) / Km

1.4096

8

Line Length (Km)

9.5571

9

Maximum Load Current (Primary in A)

10

Power Factor

11

Zone 1 Settings required in %

80

12

Zone 2 Settings required in %

150

13

Zone 3 Settings required in %

400

14

Zone 4 Settings required in %

25

15

Zero Seq. Mutual Reactance (Xm0)

0

400 0.855

Zone 2 Ph-E Fault: R2_pe

0.7358967

X2_pe

1.84929885

max(x2_pe/2,25/LZ+R_line)

8.8239311333

INDIA

R2_pe derived (as per Manual)

0.7358967

X2_pe Rect

0.924649425

Min(8*X2_Rect, R2_pe/4)

0.183974175

R2_pe Rect

1.84929885

R2_pe to be Set

2.58519555

Zone 2 Ph-Ph Fault: R2_pp

0.7358967

X2_pp

1.84929885

max(x2_pp/2,15/LZ+R_line)

5.4905978

R2_pp derived (as per Manual)

0.7358967

X2_pp Rect

0.924649425

Min(8*X2_Rect, R2_pp/4)

0.183974175

R2_pp Rect

1.84929885

R2_pp to be Set

2.58519555

Zone 4 Ph-E Fault: R4_pe

0.12264945

X4_pe

0.308216475

max(x4_pe/2,25/LZ+R_line) R4_pe derived (as per Manual)

8.8239311333 0.12264945

X4_pe Rect

0.1541082375

Min(8*X4_Rect, R4_pe/4)

0.0306623625

R4_pe Rect

0.308216475

R4_pe to be Set

0.430865925

Zone 4 Ph-Ph Fault: R4_pp

0.12264945

X4_pp max(x4_pp/2,15/LZ+R_line) R4_pp derived (as per Manual)

0.308216475 5.4905978 0.12264945

X4_pp Rect

0.1541082375

Min(8*X4_Rect, R4_pp/4)

0.0306623625

R4_pp Rect

0.308216475

R4_pp to beSet

0.430865925

ED,

INDIA

COMMON PARAMETERS: CTR / PTR

0.3333333333

Kr

0.3225108225

Kx

0.8807924203

km R_Line

0.4905978

X_line

1.2328659

Zone 1 Ph-E Fault: R1_pe

0.39247824

X1_pe

0.98629272

max(x1_pe/2,25/LZ+R_line)

8.8239311333

R1_pe derived (as per Manual)

0.39247824

X1_pe Rect

0.49314636

Min(8*X1_Rect, R1_pe/4)

0.09811956

R1_pe Rect

0.98629272

R1_pe to be Set

0.98629272

Zone 1 Ph-Ph Fault: R1_pp

0.39247824

X1_pp

0.98629272

max(x1_pp/2,15/LZ+R_line)

5.4905978

R1_pp derived (as per Manual)

0.39247824

X1_pp Rect

0.49314636

Min(8*X1_Rect, R1_pp/4)

0.09811956

R1_pp Rect

0.98629272

R1_pp to be Set

0.98629272

Zone 3 Ph-E Fault: R3_pe

1.9623912

X3_pe

4.9314636

max(x3_pe/2,25/LZ+R_line)

8.8239311333

R3_pe derived (as per Manual)

1.9623912

X3_pe Rect

2.4657318

Min(8*X3_Rect, R3_pe/4)

0.4905978

R3_pe Rect

4.9314636

R3_pe to be Set

6.8938548

Zone 3 Ph-Ph Fault: R3_pp

1.9623912

X3_pp

4.9314636

max(x3_pp/2,15/LZ+R_line)

5.4905978

R3_pp derived (as per Manual)

1.9623912

X3_pp Rect

2.4657318

Min(8*X3_Rect, R3_pp/4)

0.4905978

R3_pp Rect

4.9314636

R3_pp to be Set

6.8938548

Maximum Load Resistance: Theta (DEGREES(ACOS(PF)))

31.2402652162

Factor = (K re * 0.9) / (K rel * K ss* IL max)

0.0013701923

Factor * KV

180.8653846154

63.4 - Theta

32.1597347838

Sin(63.4 - Theta) / Sin 63.4 Load Resistance Primary Load Resistance Secondary 90% of Load Resistance

0.5952904447 107.6674352467 35.8891450822 32.300230574

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