Study of generator excitation system regulator parameters affecting  power system dynamic voltage stability

HE Kaijiao, FANG Gefei，LIU Rong

(School of Electrical Engineering, Zhejiang University, Hangzhou 310027,  China)

Abstract: Power system voltage stability is a dynamic stability problem, induction motors and thermal control loads etc., these dynamic loads have great impacts on the voltage stability Generators are the most important dynamic reactive sources of the power system, and their quick exciting ability of their excitation system can effectively prevent the voltage instability In order to study the dynamic voltage stability problem from the generator side, the regulator parameters affecting the quick exciting ability of excitation system and the dynamic voltage support ability of generator  were exactly analyzed At last, the simulation of IEEE14 node system was done, using the PSAT analysis tool. The results verify that the regulator parameters of the generator excitation system have important effects on keeping the power system dynamic voltage stability

Key words: power system; dynamic voltage stability; voltage instability; dynamic reactive source