Cause Analysis of DC Commutation Failure Due to a Set of Parallel Capacitor Input
In all the previous process of inputing parallel capacitor in HUAXIN converter station,the last set of parallel capacitor input has the larger probability to cause AC power grid disturbance,possibly resulting in DC commutation failure and even DC system blocking.This paper analyzes the process and reasons of commutation failure caused by inputing the last set of parallel capacitors,then probes into the reasons of AC power grid disturbance from the aspect of capacitor design,main part of capacitor switch and switch control circuit.Finally,in combination with the actual situation of Huaxin converter station some improvement measures and further research works are suggested.
DC commutationparallel capacitorDC converter station
NETL
NSTL
万方数据
维普
