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Table 2 Heavy active power at some load buses of the IEEE 30-bus test system

From: A novel collapse prediction index for voltage stability analysis and contingency ranking in power systems

Bus no.

Active power (MW)

Most critical lines

Lines (from–to)

NCPI

Lmn

FVSI

LQP

NLSI

VSLI

Bus-4

618

4–2

4–2

1.0047

0.8524

0.3518

1.3020

0.2089

0.9335

   

4–3

0.5587

0.5771

0.4670

0.5783

0.1575

0.0392

   

4–12

0.4541

0.43034

0.4264

0.3987

0.4264

0.5848

   

4–6

0.4169

0.4027

0.3867

0.3277

0.4495

0.4608

Bus-7

513

7–6

7–6

1.0203

0.9545

0.4054

1.1558

0.1592

0.9090

   

7–5

0.7753

0.7013

0.5258

0.1669

0.7967

0.9115

Bus-14

137.8

14–15

14–15

0.9951

0.8172

0.3127

0.3941

0.6593

0.8521

   

14–12

0.6571

0.3830

0.2147

0.3175

0.6940

0.8422

Bus-19

133.5

1–3

1–3

0.9201

0.5455

0.4957

0.7872

0.7265

0.5499

   

18–15

0.4935

0.2237

0.1710

0.0507

0.5110

0.6309

Bus-28

486.01

28–6

28–6

0.9403

0.3756

0.2598

0.9056

0.2541

0.7882

   

28–8

0.8334

0.6952

0.5102

0.1301

0.7673

0.8240

   

28–27

0.1974

0.1830

0.1724

0.1974

0.1824

0.2090