110kV电容式电压互感器上节电容的介质损耗因数实验研究  

Experimental Research on tanδof Upper Capacitance of 110kV Capacitance Voltage Transformer

作　　者：陈天翔[1] 张训斌[1] 张辑[1] 谢成炳 魏农[1] 

机构地区：[1]厦门理工学院电气工程与自动化学院,福建厦门361024

出　　处：《宁夏大学学报（自然科学版）》2014年第1期43-47,共5页Journal of Ningxia University(Natural Science Edition)

基　　金：国家863计划基金资助项目(20070ZAA423);厦门市科技计划研究项目(3502Z20123043;3502Z20111008);福建省教育厅项目(JA13234)

摘　　要：介质损耗因数tanδ的大小反映绝缘介质的绝缘状况.电容式电压互感器tanδ的测量对保证其安全运行有着重要的意义.本文模拟不同的外界污染环境,并在每种污染环境下,选择不同的实验电压,采用正、反两种接线方法对110kV电容式电压互感器上节电容器的tanδ值进行实测.结果发现:正接线时,tanδ随着电压的升高而降低;反接线时,tanδ随着实验电压的升高,基本保持不变.对此进行了理论分析,提出了提高tanδ现场测量精度的测量方法和在现场测试过程中的注意事项.The tangent of dielectric loss angle （i. e. tan ~） is named dielectric loss factor, and its value can reflect insulation state of the dielectric. The measurement of tan ~ has significance to ensure the safety operation of capacitor voltage transformer. The different external environment pollution with different voltage is simulated, and then tan ~ values of upper half of 110 kV capacitor voltage transformer is measured by using positive and negative wiring methods. The measurement results show that tan 9 reduces as the voltage rising with positive wiring, and essentially keeps unchanging as the voltage increasing with anti-wiring. The corresponding theoretical analysis is presented, and then some methods to improve the accuracy of tan d measurement and notes which may be concerned in experimental field are proposed.

关 键 词：电容式电压互感器 介质损耗因数 外界环境 实验方法 理论分析 

分 类 号：TM83[电气工程—高电压与绝缘技术]