电力系统自动化2016，Vol.40Issue(8)：108-113,6.DOI:10.7500/AEPS20150518014
电容式电压互感器谐波测量误差试验技术
Harmonic Measurement Error Test Technology of Capacitor Voltage Transformer
乐健 1柳永妍 1李琼林 2余晓鹏 2刘开培1
作者信息
- 1. 武汉大学电气工程学院，湖北省武汉市 430072
- 2. 国网河南省电力公司电力科学研究院，河南省郑州市 450052
- 折叠
摘要
Abstract
Capacitor voltage transformer (CVT) is widely used for voltage measurement, relay protection and carrier communications in the high-voltage system.In this paper,the measurement error test method of CVT under the harmonic background is researched.First,a test system using a step-up transformer for testing to provide the high-voltage harmonic source is established.The reasons of harmonic voltage amplification and attenuation on high voltage side are analyzed.On this basis,the reformation project which replaces the experimental step-up transformer with the ordinary step-up transformer is proposed.Then,the harmonic measurement error of CVT is analyzed.The harmonic equivalent circuit of CVT is built and the resonant mode of its internal circuit is analyzed.Through the theoretical analysis and the simulation,the effectiveness of the test platform and the validity of simulation results are verified.关键词
电容式电压互感器/谐波测量/频率响应/试验用升压变压器Key words
capacitor voltage transformer(CVT)/harmonic measurement/frequency response/step-up transformer for testing引用本文复制引用
乐健,柳永妍,李琼林,余晓鹏,刘开培..电容式电压互感器谐波测量误差试验技术[J].电力系统自动化,2016,40(8):108-113,6.
