Verification and Expansion of Transient Analysis of Voltage collapse Using Induction Motor Load Model

Abstract

Voltage instability is now under intensive study in Japan. Some dynamic methods for analyzing voltage collapse have been already presented. However, propriety of load models used in the methods and generality of the results have not been verified.
In this paper, precious data of voltage collapse acquired in real power system are presented. The measured data are compared with the result of dynamic digital simulation to verify propriety of an induction motor load model.
In the latter half of this paper, the dynamic simulations of voltage collapse taking into account dynamics of generators are carried out. An interconnected power model system with 10 nodes is analyzed. The generality of basic characteristics concerning voltage collapse which have been already obtained by ignoring dynamics of generators is verified by such simulations.