基于自激法的非接触式CVT介损测量方法  

Non-contact Dielectric Loss Measurement Method of CVT Based on Self Excitation Method

作　　者：苏咏梅[1] 王振宇[1] 

机构地区：[1]郑州职业技术学院,河南郑州450121

出　　处：《电力电容器与无功补偿》2016年第6期160-164,共5页Power Capacitor & Reactive Power Compensation

基　　金：2016年度河南省高等学校重点科研项目应用研究计划(16B413007)

摘　　要：通过对现有电容式电压互感器(CVT)介损测量法的分析,提出了基于自激法的非接触式CVT介损测量。设计了非接触式介损测量平台对经过CVT的电压电流数据进行同步采集,然后通过无线传输模块将所测得的电参数数据传输至计算机终端,利用Lab VIEW软件程序编辑谐波分析法,对电参数进行处理并计算,最终获得介损值tanδ。该测量法不仅能准确测出CVT各部分电容器的介损值和瞬时电容值,而且在介损测试中能有效地与一次高压设备进行电气隔离,具有较高的便捷性和实用性。The non-contact dielectric loss measurement of capacitor voltage transiormer （G VT） is propo- sed through analysis of the dielectric loss measurement method of existing CVT. The non-contact dielec- tric loss platform is designed and synchronous data acquisition of voltage and current passing through the CVT is made. Then the data of electrical parameters obtained by wireless transmission module is trans- mitted to computer termination. The electrical parameters are processed and calculated by the use of har- monic analysis on LabVIEW software platform and the dielectric loss（tanδ）is finally obtained. This mea- surement method can not only measure the dielectric loss and transient capacitance of each capacitor of CVT,but also perform electrical isolation with primary high voltage equipment effectively in the dielectric loss measurement and has higher convenience and practicability.

关 键 词：CVT 介质损耗 非接触 电压电流测量 

分 类 号：TM451[电气工程—电器]