Implementation of Static Line Voltage Stability Indices for Improved Static Voltage Stability Margin

Table 1

System performance of the IEEE 30-bus test system.

	Objective functions
	Case 1	Case 2	Case 3	Case 4
Pg (MW)	292.83	290.34	289.87	288.12
Qg (MVar)	87.46	83.33	82.63	60.81
Loss (MW)	9.4290	6.9408	6.4713	4.7236
Cost ($/h)	802.21	829.11	831.09	971.55
Maximum FVSI	0.2471	0.0722	0.0672	0.4212
Maximum Lmn	0.2483	0.0723	0.0672	0.4221
Maximum LVSI	0.9019	0.8439	0.8631	0.7219
Sum FVSI	1.4519	0.6321	0.6273	2.4624
Sum Lmn	1.4694	0.6396	0.6349	2.4988
Sum LVSI	6.9357	6.6840	6.5508	5.2089
Maximum loadability (MW)	856.92	895.64	872.74	912.59