Dynamic Voltage/Var Sensitivity Approach for Improving Fault-induced Voltage Delayed Recovery Problems

摘要

A dynamic sensitivity method is proposed to evaluate the impact of generators' reactive power on the recovery of key bus voltage in a system post-fault dynamic duration to improve the problem of delayed recovery voltage. Voltage delayed recovery existed in actual power grid is simulated on Guangdong power grid of 2013 to verify the correctness and effectiveness of the method. It is significant to solve the problems of selecting the plant units involved in the reactive power control for shortening the recovery time of key bus voltage.