摘要
在华新换流站历次投入并联电容器的过程中,较之其他各组,投入最后一组并联电容器时,引起交流电网扰动的概率较大,同时也会进一步导致换流器发生换相失败故障,甚至引发直流系统闭锁。分析了最后一组并联电容器投入时引发换相失败的过程及发生换相失败的原因,同时通过电容器设计、电容器开关本体、开关控制回路三个方面对并联电容器组投入时引起交流电压扰动的原因进行了分析。结合华新换流站的实际情况提出了进一步的改进措施和后续需开展的工作。
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.
出处
《华东电力》
北大核心
2014年第5期1038-1043,共6页
East China Electric Power
关键词
直流换相
并联电容器
直流换流站
DC commutation
parallel capacitor
DC converter station
