高压直流断路器残余电荷的分布及泄放  

Distribution and Release of Residual Charge of HVDC Breaker

作　　者：杨敏祥 吕志瑞 杨大伟 张建凯 张晓飞 YANG Minxiang;LV Zhirui;YANG Dawei;ZHANG Jiankai;ZHANG Xiaofei(State Grid Jibei Electric Power Company,Beijing 100052,China;NR Electric Power Electronics Co.,Ltd.,Changzhou 213025,China;State Grid Jibei Electric Power Co.,Ltd.Maintenance Branch,Beijing 102488,China)

机构地区：[1]国网冀北电力有限公司,北京100052 [2]常州博瑞电力自动化设备有限公司,江苏常州213025 [3]国网冀北电力有限公司检修分公司,北京102488

出　　处：《电工技术》2022年第11期113-115,共3页Electric Engineering

摘　　要：以张北柔性直流电网示范工程±535 kV混合式高压直流断路器为例,介绍了在直流系统停电闭锁后,高压直流断路器内残余电荷的产生原因及分布,并对电力电子开关器件缓冲回路及快速机械开关的触发回路储能电容残余电荷的泄放原理及方式进行阐述,为高压直流断路器的停电检修前残余电荷的泄放打下基础。In the paper,taking the±535 kV hybrid HVDC breaker in flexible DC grid demonstration project of Zhangbei as an example,generation reason and distribution of residual charges in HVDC breaker are presented when DC system power closed.Additionally,principles and method of residual charge discharge for buffer loop in power electronic switch and energy storage capacitor in trigger loop of fast mechanical switch are introduced,which lays a foundation for the discharge of residual charge before power failure and maintenance of high voltage DC circuit breaker.

关 键 词：高压直流断路器 残余电荷 缓冲回路 电荷泄放 

分 类 号：TM561[电气工程—电器]