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

Protection and Control of Modern Power Systems

Table 1 The line stability indices for the IEEE 30-bus system in the base case loading

Line	NCPI	L_mn	FVSI	LQP	NLSI	VSLI
6–4	0.0364	0.0333	0.0326	0.0334	0.0021	0.0049
6–28	0.0249	0.0242	0.0243	0.0221	0.0101	0.0049
9–11	0.1113	0.1113	0.1113	0.1113	0.1113	0.1113
16–17	0.0121	0.0119	0.0118	0.0098	0.0210	0.0211
18–15	0.0177	0.0169	0.0167	0.0129	0.0373	0.0377
20–10	0.0328	0.0315	0.0310	0.0247	0.0566	0.0574
21–10	0.0328	0.0323	0.0321	0.0259	0.0463	0.0465
25–24	0.0267	0.0263	0.0266	0.0199	0.0104	0.0106
24–23	0.0164	0.0162	0.0162	0.0130	0.0219	0.0219
30–27	0.0502	0.0415	0.0398	0.0245	0.1154	0.1205
30–29	0.0142	0.0126	0.0124	0.0086	0.0445	0.0454