电测与仪表2016，Vol.53Issue(11)：39-44,6.
电容式电压互感器误差分析方法研究
Research on error analysis method of capacitor voltage transformer
王欢 1汪本进 1邓万婷 2项琼 1杜砚1
作者信息
- 1. 中国电力科学研究院，武汉430074
- 2. 国网湖北省电力公司电力科学研究院，武汉430074
- 折叠
摘要
Abstract
The capacitor voltage transformer (CVT), which has advantages of dielectric strength and insulation mar-gin, and it is widely used at 110 kV and above voltage level power system on error measurement , system protection and so on .With the separation of power plants and transmission grid , people have been paid much more attention on accuracy of gateway energy metering device .Actually, the error data often vary greatly with different working condi-tions because of the structural characteristics of CVT .Firstly, the equivalent model has been established by consider-ing the structural principle of CVT , measuring instruments and external environment to conduct theoretical analysis for its error.Secondly, this paper takes CVTs which are used at Zhe Fu project for example to contrast error data of deliv-ery test, commissioning test and online error calibration .Then, these measured data have proved the correctness of the theoretical analysis .The analysis of CVT error data trend and validation tests provides guidance for commissioning test and online error calibration .What′s more, it improves the reliability of CVT error measurement .关键词
电容式电压互感器/准确度等级/误差限值/出厂试验/交接试验Key words
capacitor voltage transformer/accuracy class/error limit/delivery test/commissioning test分类
信息技术与安全科学引用本文复制引用
王欢,汪本进,邓万婷,项琼,杜砚..电容式电压互感器误差分析方法研究[J].电测与仪表,2016,53(11):39-44,6.
