一起4星形电压互感器零序电压反充电事故分析
 

张关应，褚国伟，张雄伟，周志刚
（常州供电公司，江苏 常州 213000）
 

    摘 要：介绍了一起4 星形电压互感器零序电压反充电事故处理过程，并对事故原因进行了分析，该事故因电压并列回路误接线引起，在10 kV 系统单相接地时发生。考虑到该事故因变电站扩建时误接线引起，对类似扩建工程二次施工提出了合理施工方案，以避免类似事故发生。
    关键词：4 星形电压互感器；零序电压；反充电
    中图分类号：TM451     文献标识码：B     文章编号：1007-3175(2016)11-0025-03
 

Zero Sequence Voltage Anti-Charging Incident Analysis of
4-Star Connection Potential Transformer

 

ZHANG Guan-ying, CHU Guo-wei, ZHANG Xiong-wei, ZHOU Zhi-gang
（Changzhou Power Supply Company, Changzhou 213000, China）

    Abstract: Introduction was made to a case of zero sequence voltage anti-charging incident of 4-star connection potential transformer (PT) and analysis was made to the accident cause. The incident caused by the false wiring of voltage parallel circuit happened when single phase was grounding in 10 kV system. Considering the incident was due to false wiring at the time of substation expansion, this paper proposed the reasonable construction scheme for the secondary circuit construction of similar expansion project to avoid the occurrence of similar incidents.
    Key words: 4-star connection potential transformer; zero sequence voltage; anti-charging
 

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