变电站低压交流环网进线开关熔断原因分析及防范措施  

Reason analysis and prevention of measures incoming circuit breakers fusing of substation station low voltage AC ring network power

作　　者：高超[1] 刘晓[1] 郑小革[1] 

机构地区：[1]国网湖南省电力公司衡阳供电分公司,湖南衡阳421001

出　　处：《湖南电力》2016年第5期83-85,共3页Hunan Electric Power

摘　　要：分析两例220 kV变电站(一个智能变电站、一个常规变电站)低压交流环网进线开关熔断事件原因,针对事件暴露出的站用交流环网存在负荷分配不均、交流开关级差配置不合理等问题,提出防范措施。所提措施已在衡阳电网地区新建变电站和老式变电站环网电源改造中应用且措施可行有效。This paper analyses the fusing faults reasons of the incoming circuit-breakers of low voltage AC ring network power intwo 220 kV substations （one for the smart substation , the other for the conventional substation ）. For the problem of uneven load distribution and unreasonable stage difference coordination , this paper also gives the solutions . The solutions have been applied in the new substation project and the old substation station service system reconstruction project in Hengyang power grid . The running results indicates that the solutions are feasible and effective .

关 键 词：变电站 低压交流环网 负荷分配 热交换器 级差配合 

分 类 号：TM642.2[电气工程—电力系统及自动化]