南方电网技术2016，Vol.10Issue(2)：38-43,6.DOI:10.13648/j.cnki.issn1674-0629.2016.02.006
基于地电波幅值经验累积分布特性的高压开关柜状态判断及运维策略
HV Switchgears State Judging and Operation and Maintenance Strategy Based on Empirical Cumulative Distribution Characteristics of TEV PD Levels
摘要
Abstract
At present,domestic operating companies judge partial discharge conditions of high voltage switchgear by foreign experi-ence,and are lacking in localized switchgear status judging methods. According to the partial discharge data of 30 773 running high voltage switchgears in Guangzhou,a series of novel empirical cumulative distribution functions (ECDFs)based on on-site transient earth voltage (TEV)data of high voltage switchgears are proposed. Differences of typical features between local and foreign ECDFs of on-site TEV data are compared. According to the distribution criteria of 25%,10% and 5%,the foreign thresholds are 19 dB·mV,29 dB·mV and 35 dB·mV,whereas the local empirical thresholds are 13 dB·mV,23 dB·mV and 32 dB·mV. The result illustrates that the foreign experience on the thresholds may not be suitable for local judgment. Based on the ECDFs,the suitable local on-site TEV tests criteria and maintenance strategy considering the risk of failure probability and the maintenance cost are concluded,which is more flex-ible and reliable.关键词
高压开关柜/局部放电/地电波/经验累积分布函数Key words
high voltage switchgears/partial discharge/transient earth voltage/empirical cumulative distribution functions分类
信息技术与安全科学引用本文复制引用
熊俊,陆国俊,王勇,王有元,王伟,杨园..基于地电波幅值经验累积分布特性的高压开关柜状态判断及运维策略[J].南方电网技术,2016,10(2):38-43,6.基金项目
国家高技术研究发展计划（863计划）项目（2015AA050201）。@@@@Supported by the National High Technology Research and Development Program of China （863 Program）（2015AA050201）． （）
