云广±800kV直流系统旁路断路器保护特性分析  

Analysis on the Protection Characteristics of Bypass Switch in Yunnan-Guangdong ±800 kV DC System

作　　者：刘进[1] 曹继丰[1] 

机构地区：[1]中国南方电网超高压输电公司安宁局,云南安宁650300

出　　处：《南方电网技术》2010年第4期63-66,共4页Southern Power System Technology

摘　　要：云广±800kV直流系统采用双12脉动阀组串联的方式,设置了旁路断路器,通过旁路断路器的投退,实现对换流器单元的投切。针对在系统功能试验过程中发现的旁路断路器不正常运行情况,研究了旁路断路器特性及其保护、控制之间的配合问题,找到了带电解锁第二个阀组的有效方案并成功应用。A configuration of two 12-pulse valve groups in series was adopted in Yunnan-Guangdong ±800 kV DC system,and it was needed to deploy bypass switches,through which to have each valve group operate off/on.Aiming at the unusual operation case of the bypass switch occurred during the dynamic performance test of the DC system,this paper researched the characteristics of bypass switch and the cooperation issues of its protection and control,resulting in an effective scheme for delocking in life the second valve group,which was successfully in application.

关 键 词：特高压直流 双12脉动阀组 旁路断路器 保护特性 

分 类 号：TM561[电气工程—电器]