一组并联电容器投入引起直流换相失败原因分析
Cause Analysis of DC Commutation Failure Due to a Set of Parallel Capacitor Input
毛逸铭 1刘志龙 1刘峰 1阴春晓 1朱皆悦 1周孝法1
作者信息
- 1. 国网上海市电力公司检修公司,上海 200330
- 折叠
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.
Abstract
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.
关键词
直流换相/并联电容器/直流换流站Key words
DC commutation/parallel capacitor/DC converter station引用本文复制引用
出版年
2014
NETL
NSTL
维普
万方数据