母线充电时投入母差保护的必要性分析  

The Necessity of Bus Charging with Input Differential Bus Protection

作　　者：付振强[1] 侯明辰 

机构地区：[1]鞍山供电公司,辽宁鞍山114002

出　　处：《东北电力技术》2013年第6期35-39,共5页Northeast Electric Power Technology

摘　　要：变电站的母线是电力系统最重要的电力元件之一,起着传输电能的作用。当母线发生故障时,如果母线差动保护不能瞬时可靠动作,将直接影响电力系统的安全稳定运行,造成严重后果。变电站母线检修作业完成后,利用母联开关给检修母线充电时,运行人员往往将母线差动保护完全退出,只投入母联充电保护。文中根据母线差动保护、母联充电保护及母联死区保护原理,对各类型故障进行分析,以此证明在对空母线充电时,投入母差保护的必要性。The substation bus is one of the most important electric components in electric power system, it plays the role of power transmission function. When the bus failed, if busbar differential protection could not instant start up, it will directly affect the safe and stable operation of power system, causing serious consequences. Substation bus maintenance operation is completed, the coupling switch to charge the maintenance bus, operators often completely shut down bus differential protection, and only leave coupling switch of the charging protection. In this paper, according to the main busbar differential protection, bus bar charging protection and busbartie dead-zone protection principle, it makes analysis on various types of fault, in order to prove that in the charging of the empty bus, it is necessary to input busbar differential protection.

关 键 词：母线差动保护 母联充电保护 母联死区保护 

分 类 号：F407.61[经济管理—产业经济] TM711[电气工程—电力系统及自动化]