特高压直流差动保护87DCM动作行为分析及优化改进  

Analysis and improvement of protection action for ultra-high voltage DC differential protection 87DCM

作　　者：陈国峰[1] 邓先友[1] 常开忠[1] 

机构地区：[1]中国南方电网超高压输电公司安宁局,云南昆明650217

出　　处：《贵州电力技术》2013年第9期29-30,71,共3页Guizhou Electric Power Technology

摘　　要：根据穗东换流站直流差动保护87DCM的动作情况,分析直流差动保护的特点和交流线路单相故障引起换相失败对直流差动保护的影响,结合穗东换流站直流差动保护逻辑的特点提出了相应的优化改进。According to the action of DC differential protection 87 DCM in Suidong Conversion Station, the paper analyzed the characteristics of DC differential protection and the influence of conversion failing caused by single phase fault to DC differential protection. The paper proposed improvement methods according to the protection logic characteristics of DC differential protection in Suidong Conversion Station.

关 键 词：直流差动保护 换相失败 优化改进 

分 类 号：TM773[电气工程—电力系统及自动化]