On-site Dielectric Loss Measurement Method and Error Analysis of Capacitor Voltage Transformer

WANG Leiyun; LI Dechao; ZHANG Yuhuan

doi:10.14044/j.1674-1757.pcrpc.2015.03.016

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On-site Dielectric Loss Measurement Method and Error Analysis of Capacitor Voltage Transformer

更新时间：2024-09-14

- On-site Dielectric Loss Measurement Method and Error Analysis of Capacitor Voltage Transformer
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 36, Issue 3, Pages: 72-76(2015)
- 作者机构：
  
  1. 南昌大学信息工程学院
  2. 国网安徽省电力公司亳州供电公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2015.03.016
  CLC： TM451
- Published：2015，
- 稿件说明：
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[1]王蕾云,李德超,张玉环.电容式电压互感器介损现场测量方法及误差分析[J].电力电容器与无功补偿,2015,36(03):72-76.

WANG LEIYUN, LI DECHAO, ZHANG YUHUAN. On-site Dielectric Loss Measurement Method and Error Analysis of Capacitor Voltage Transformer. [J]. Power capacitor & reactive power compensation, 2015, 36(3): 72-76.
[1]王蕾云,李德超,张玉环.电容式电压互感器介损现场测量方法及误差分析[J].电力电容器与无功补偿,2015,36(03):72-76. DOI： 10.14044/j.1674-1757.pcrpc.2015.03.016.

WANG LEIYUN, LI DECHAO, ZHANG YUHUAN. On-site Dielectric Loss Measurement Method and Error Analysis of Capacitor Voltage Transformer. [J]. Power capacitor & reactive power compensation, 2015, 36(3): 72-76. DOI： 10.14044/j.1674-1757.pcrpc.2015.03.016.

摘要

对无中间抽头的电容式电压互感器（CVT）的结构原理进行简单介绍

对上、下节电容单元的电容值和介质损耗测量方法进行了探讨;尤其对下节电容单元自激法测量方法和现场测量误差原因逐项进行了简要分析

并提出针对性防止措施。分析可知

"δ"端子（或二次绕组）绝缘下降和中间法兰处接触不良极容易产生介损增大的现场测量误差应重点消除;同时

泄漏电流、电桥引线及电场干扰等误差因素也应注意现场防控。

Abstract

In this paper

the structural principle of capacitor voltage transformer（CVT）withou t intermediate tap is simply introduced

the capacitance and dielectric loss measurement on the upper and lower section capacitor cells are discussed;the self-excitation measurement method and error are briefly analyzed item by item and the specific preventive measures are proposed.It is known by the analysis that the onsite measurement error in which the dielectric loss is creased due to insulation drop of "δ"terminal（or the secondary winding）and bad contact of intermediate flange shall be especially eliminated and

at the same time

such error factors as leakage current

bridge lead and electric field interference shall also be prevented and controlled at site.

关键词

电容式电压互感器（CVT）介质损耗现场测量误差分析

Keywords

capacitor voltage transformer（CVT）dielectric losson-site measurementerror analysis

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