基于地电波检测法的非侵入式高压开关柜局部放电监测定位研究

Research on Non-intrusive Partial Discharge Inspection Location of High-voltage Switchgear by Using TEV Method

在分析TEV技术原理的基础上,研制一套基于测量开关柜表面地电波来监测开关柜内部局部放电及定位局部放电源的非侵入式高压开关柜局部放电监测定位系统。使用该系统进行了实验室测试和现场变电站内开关柜的局放实测,并综合应用TEV技术对高压开关柜典型缺陷的局部放电进行了检测与分析,测试结果表明该系统功能完备、安全可靠、性能优良、操作方便,总体功能及性能参数满足高压开关柜非侵入在线局部放电监测的应用需求。

Based on research results of TEV principle, a system of non-intrusive partial discharge inspection location for high-voltage switehgear was developed, so the partial discharge of switehgear-inner could be detected and the partial discharge resource could be located with the help of this system. Laboratory test and field test in transformer substation was carried out, comprehensive measurement was used to check and analyze the typical defects in switchgear. Test results showed that the system function completely satisfied the reliable excellent performance and convenient operation, the overall function and performance parameters meet the high voltage switch non-invasive on-line partial discharge monitoring, and the technology has been proved its effectiveness by applying into power network.