系统反相序二次电流正序接入对微机保护的影响  

Influence of Secondary Current with Positive Sequence Accessing in Reversed Phase-sequence System on Microcomputer-based Protection

作　　者：罗永刚[1] 罗建华[1] 张凯 

机构地区：[1]四川电力职业技术学院,四川成都610072 [2]绵阳电业局,四川绵阳621000

出　　处：《四川电力技术》2010年第2期83-84,共2页Sichuan Electric Power Technology

摘　　要：着重介绍了绵阳电业局在对110kV变电站进行综合自动化改造、更换变压器保护时,一次系统反相序,二次电流正序接入对微机差动保护的影响。分析了原因,提出了防范措施,这对110kV变压器保护的运行维护、缺陷处理带来了便利。The influence of the secondary current with positive sequence accessing in a reversed phase - sequence system on the microcomputer - based differential protection is introduced, when carrying out the integrated automation transformation of a 110 kV substation of Mianyang Electric Power Bureau. The reasons are analyzed, and the preventive actions are proposed, which is convenient for the operation, maintenance and defect processing of 110 kV transformer protection.

关 键 词：变压器保护 更新改造 系统反相序 保护影响 防范措施 

分 类 号：TM773[电气工程—电力系统及自动化]