一起110kV中阻抗母差保护误动的原因分析与措施  

Analysis and countermeausres of one mal-operation of medium impedance busbar differential protection occurred in 110kV system

作　　者：刘继安 杨淮强[2] 蔡之飞 倪有仁 

机构地区：[1]濮阳市电业局,河南濮阳457000 [2]安徽淮化集团有限公司电气技术组,安徽淮化710065 [3]许昌供电公司调度中心,河南许昌461000

出　　处：《继电器》2006年第17期67-68,72,共3页Relay

摘　　要：JMH-1型母差保护是一种快速、灵敏、中阻抗电流差动原理构成的母差保护装置,根据多年的运行考验,也暴露出一些问题,运行中投手动母差联动保护压板时误跳母联开关,针对JMH-1型母差保护这类问题进行分析,提出新的运行方案,制定防范措施。JMH - 1 busbar protection is a medium impedance principle based busbar differential protection equipment with high operation speed and sensitivity. However, during years of operation experience, some problems of the protection are also exposed. For example, when the link ＂manual busbar differential protection linkage＂ is enabled during operation, the bus coupler circuit breaker may be maloperated. By analyzing these problems,this paper proposes new operation schemes and countermeasures.

关 键 词：中阻抗母差保护 误动 原因分析 

分 类 号：TM771[电气工程—电力系统及自动化]