Determination of Steady State Voltage Stability limit using PQ curves for voltage sensitive loads

P-V and Q-V curves are commonly used to determine the steady-state voltage stability limit of a power system. In this paper, the method of determining the voltage stability boundaries for a power system with voltage sensitive loads using P-Q curves is presented. The proposed method has been tested on a sample system, and interesting results are presented for voltage sensitive loads from the P-Q curves.