Review on Harmonic Monitoring Technology of Capacitor Voltage Transformer

CHEN Yicong; LIU Kunxiong; FENG Yalin; SUN Liwen; ZHANG Xiaoqing; LIU Juncheng

doi:10.14044/j.1674-1757.pcrpc.2022.05.011

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Review on Harmonic Monitoring Technology of Capacitor Voltage Transformer

更新时间：2024-09-21

- Review on Harmonic Monitoring Technology of Capacitor Voltage Transformer
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 43, Issue 5, Pages: 70-75(2022)
- 作者机构：
  
  1. 国网陕西省电力公司电力科学研究院
  2. 西安博宇电气有限公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2022.05.011
  CLC： TM451.2
- Published：2022，
- 稿件说明：
移动端阅览
CHEN YICONG, LIU KUNXIONG, FENG YALIN, et al. Review on Harmonic Monitoring Technology of Capacitor Voltage Transformer. [J]. Power capacitor & reactive power compensation, 2022, 43(5): 70-75.
DOI：

CHEN YICONG, LIU KUNXIONG, FENG YALIN, et al. Review on Harmonic Monitoring Technology of Capacitor Voltage Transformer. [J]. Power capacitor & reactive power compensation, 2022, 43(5): 70-75. DOI： 10.14044/j.1674-1757.pcrpc.2022.05.011.

摘要

文章首先分析了电容式电压互感器（CVT）的工作原理及其谐波传递特性，解释了CVT不适用于谐波监测的原因；在此基础上就目前广泛应用的几种谐波间接测量技术包括参数辨识法、末屏测试法、电容电流法及串接电容法，简述了其实现原理、优缺点及应用场景限制；最后，考虑到从原理上电容电流法解耦了测量结果与CVT各环节的相互影响关系而具有广阔的应用前景，文章进一步介绍了应用该方法实现CVT谐波在线监测的实现及其效果。

Abstract

The operating principle and harmonic response behavior of the capacitor voltage transformer（CVT）are analyzed firstly in this paper

and the reason that the CVT is not suitable for harmonic measurement is explained. On this basis

for such several kinds of indirect measurement technologies of harmonics

which are used widely at present

as parameters identification method

end-screen test method

capacitive current method and series capacitance method

their achievement principle

the prospect and cons and application scenarios are simply described. Finally

considering that the capacitive current method decouples the interaction between the measurement results and each link of CVT in principle

it has a broad application prospect

the application of the method to realize the achievement of on line monitoring of CVT harmonics and its effect is introduced further in this paper.

关键词

电容式电压互感器(CVT)谐波监测

Keywords

capacitor voltage transformer（CVT）harmonicsmonitoring

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