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    Suzhou Electric Appliance Research Institute
    期刊号: CN32-1800/TM| ISSN1007-3175

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    220 kV电容式电压互感器N点悬浮放电故障分析

    来源:电工电气发布时间:2019-10-15 14:15 浏览次数:115
    220 kV电容式电压互感器N点悬浮放电故障分析
     
    方磊,王雨薇,周能萍,蒋良晨
    (国网江苏省电力有限公司南京供电分公司,江苏 南京 210008)
     
        摘 要:针对具备载波通信功能的电容式电压互感器拆除结合滤波器后N 点悬浮放电的故障实例,分析了该类型电压互感器的拓扑结构和工作原理。根据二次接线方式的变化,研究了间隙放电故障对系统产生的具体影响,并仿真分析了该类故障具体的数值化表现。通过对该故障实例的研究,给出了在变电运维巡视工作中针对此类型故障的处理建议。
        关键词:电容式电压互感器;悬浮放电;故障分析;隐性特征
        中图分类号:TM451+.2     文献标识码:B     文章编号:1007-3175(2019)10-0036-03
     
    Fault Analysis of N Point Suspension Discharge of 220 kV Capacitive Voltage Transformer
     
    FANG Lei, WANG Yu-wei, ZHOU Neng-ping, JIANG Liang-chen
    (Nanjing Power Supply Branch, State Grid Jiangsu Electric Power Co., Ltd, Nanjing 210008, China)
     
        Abstract: Aiming at the fault example of N-point suspension discharge after the removal of capacitive voltage transformer with carrier communication function and the coupling filter, this paper analyzed the topological structure and working principle of the type voltage transformer. According to the change of secondary connection, this paper studied on the concrete influence of gap discharge fault on the system, and simulated and analyzed the specific numerical performance of this kind of faults. Based on the research of this fault example, this paper gave the disposing suggestions for this type of fault in power transformation operation and maintenance inspection.
        Key words: capacitive voltage transformer; suspension discharge; fault analysis; implicit features
     
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