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Protection and Control of Modern Power Systems

Table 3 Results of case studies conducted on IEEE-14 bus system under various transmission line faults

From: An adaptive supervised wide-area backup protection scheme for transmission lines protection

Fault condition

Bus number where MPMU is installed

Connected branches with MPMU installed bus

Measurements of phasor currents from MPMU connected branch

Is fault detected?

((|IR2|& |IR3|) or (|IY2|& |IY3|) or (|IB2|& |IB3|)) > 0

(Y/N)

|IEHC|

Parent bus,

Faulty branch between two buses

Relays to be supervised

Fault type classified

|IR1|, |IR2|, |IR3|

|IY1|, |IY2|, |IY3|

|IB1|, |IB2|, |IB3|

LG fault with FR of 70Ω & FIA of 1440 at 200 km in branch 13–12 from BUS-13

2

2-5

1.413, 0, 0

1.66, 0, 0

1.27,0.52, 0.13

Y

0.558

BUS-6,

Branch 13-12

R13–12 & R12–13

BG

4

4-5

1.279, 0, 0

1.34, 0, 0

1.12,0.57, 0.26

0.631

6

6-13

0.48, 0, 0

0.41, 0, 0

1.56,0.55, 0.16

0.573

6-12

0.66, 0, 0

0.136, 0, 0

1.25, 0.67, 0.13

0.74

8

8-9

0.38, 0, 0

0.29, 0, 0

0.34, 0.026, 0.02

0.043

9

9-14

0.67, 0, 0

0.59, 0, 0

1.98,0.6, 0.28

0.67

11

11-6

0.66, 0, 0

0.84, 0, 0

0.57, 0.083, 0.19

0.22

13

13-12

0.15, 0, 0

2.28, 0, 0

0.2, 1.092, 0.36

1.183

L-L fault with FR of 50Ω & FIA of 900 at 0 km in branch 7-8 from BUS-7

2

2-4

0.518, 0, 0

0.42, 0.05, 0.01

0.29, 0.07, 0.04

Y

0.1

BUS-8,

Branch 8-7

R8–7 & R7–8

YB

4

4-7

2.73, 0, 0

3.98, 1.24, 0.12

3.18, 1.72, 0.63

2.22

5

5-4

1.41, 0, 0

1.12, 0.561, 0.05

1.32, 0.806, 0.19

1.014

6

6-5

0.73, 0, 0

0.59, 0.112, 0.07

1.23, 0.835, 0.14

1.016

8

8-7

3.57, 0, 0

2.54, 1.64, 0.85

2.48, 1.7, 0.88

2.35

9

9-7

0.23, 0, 0

1.19, 0.87, 0.22

1.59, 0.97, 0.75

1.52

11

11-9

0.64, 0, 0

0.77, 0.14, 0.01

0.63, 0.287, 0.05

0.327

13

13-14

0.62, 0, 0

0.39, 0.301, 0.09

0.472,0.296, 0.28

0.517

L-L-G fault with FR of 15Ω & FIA of 720 at 45 km in branch 1–2 from BUS-2

2

2-1

0.32, 0, 0

8.25, 3.87, 0.98

9.65, 6.75, 2.09

Y

8.11

BUS-2,

Branch 2-1

R2–1 & R1–2

YBG

4

4-5

1.19, 0, 0

1.08, 0.576,0.222

2.87,1.041, 0.270

1.3

5

5-1

1.74, 0, 0

5.27, 1.7, 0.2

4.7, 2.8, 0.6

3.3

6

6-5

0.128, 0, 0

0.11, 0, 0.01

1.65, 0.1, 0.2

0.3

8

8-7

0.36, 0, 0

0.33, 0.022,0.009

0.28, 0.066, 0.02

0.075

9

9-4

1.46, 0, 0

1.42, 0.28, 0.23

1.07, 0.543, 0.32

0.739

11

11-6

0.59, 0, 0

0.55, 0.03, 0.08

0.54, 0.07, 0.16

0.21

13

13-6

0.29, 0, 0

0.56, 0.18, 0.04

0.32, 0.11, 0.07

0.37

L-L-L Fault with FR of 60Ω & FIA of 00 at 65 km in branch 9–10 from BUS-9

2

2-5

1.59,0.245,0.191

1.6, 0.11, 0.049

1.6, 0.258, 0.223

Y

0.476

BUS-9,

Branch 9-1

R9–10 & R10–9

RYB

4

4-9

2.87, 1.532, 0.31

2.79, 0.842, 0.05

1.86, 0.269, 0.34

1.828

5

5-6

3.04, 1.057, 0.279

3, 0.547,0.095

3, 1.073, 0.34

1.664

6

6-11

3.93, 1.532, 0.31

1.73, 0.842, 0.05

2.97 1.551, 0.34

2.382

8

8-7

0.29, 0.054, 0.03

0.32, 0.037,0.005

0.99,0.054,0.034

0.097

9

9-10

3.49, 1.799, 0.199

3.37, 0.981, 0.19

3.57, 1.807, 0.2

2.746

11

11-10

2.64, 1.647, 0.155

1.53, 0.92, 0.013

2.89 1.709, 0.148

2.554

13

13-14

2.16, 1.065, 0.584

2.04, 0.599,0.017

2.19,1.143, 0.686

1.901

No Fault Condition

2

2-1

0.28, 0, 0

0.279, 0, 0

0.272, 0, 0

N

---

---

---

---

4

4.5

1.15, 0, 0

1.149, 0, 0

1.151, 0, 0

5

5-6

2.01, 0, 0

2.014, 0, 0

2.02, 0, 0

6

6-12

0.57, 0, 0

0.56, 0, 0

0.567, 0, 0

8

8-7

0.35, 0, 0

0.351, 0, 0

0.351, 0, 0

9

9-10

0.129, 0, 0

0.129, 0, 0

0.129, 0, 0

11

11-6

0.585, 0, 0

0.58, 0, 0

0.537, 0, 0

13

13-14

0.196, 0, 0

0.199, 0, 0

0.195, 0, 0

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