A Study on Preventing Transient Phenomena Due to Capacitor Switching in Distribution System involving Distributed Generation System

분산전원이 도입된 배전계통에서 커패시터 스위칭에 의한 과도현상 방지에 대한 연구

This paper presents a study of transient overvoltages caused by capacitor switching on the utility distribution system. Capacitor banks used for power factor correction and voltage regulation can improve efficiency of the power system. But transient voltages due to capacitor switching on the utility system affect the sensitive customer load equipments. If Distributed Generation System (DGS) is involved in the system, the problems become more serious. In this paper, effect of transient voltages at the customer load created by utility capacitor switching is analyzed by simulations Solutions to this problem are presented.