某变电站弱馈侧母联电流互感器爆炸原因分析  

Analysis on reasons of explosion of current transformer on bus coupler segment in weak-infeed side of a substation

作　　者：邹启群[1] 舒逸石[1] 于培杰[1] 

机构地区：[1]安阳供电公司,河南安阳455000

出　　处：《华电技术》2011年第9期69-71,98,共3页HUADIAN TECHNOLOGY

摘　　要：介绍了某220 kV变电站的一起弱馈侧母联电流互感器爆炸事故,结合故障发生前系统的运行方式、事故现象、相关保护及开关动作情况,依据保护装置原理,对该故障的几个关键保护动作行为进行了分析,着重剖析了弱馈线路光纤差动和光纤距离保护的动作原理和过程,结合弱馈线路特点,对其保护的配置及二次回路设计提出了相应的建议。An explosion accident of current transformer on bus coupler segment in week-infeed side of a 220 kV substation was introduced.Combining with the operation mode of the system before the accident,the phenomenon of the accident and the actions of the related protection and switches,according to the principle of the protection device,several key protection actions in the accident process were analyzed.The acting principle and acting process of the optical fiber differential protection and the optical fiber distance protection in weak-infeed line were analyzed emphatically.Combining with the characteristics of the weak-infeed line,some suggestions on its protection configuration and its secondary circuit design were put forward.

关 键 词：弱馈 变电站 电流互感器 爆炸 保护装置 

分 类 号：TM63[电气工程—电力系统及自动化]