Influence of Poor Contact on Dielectric Loss Test of Capacitive Voltage Transformer

LIU Yu; ZHAO Ru-guo; ZHANG Xin

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Influence of Poor Contact on Dielectric Loss Test of Capacitive Voltage Transformer

更新时间：2024-09-14

- Influence of Poor Contact on Dielectric Loss Test of Capacitive Voltage Transformer
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Issue 1, Pages: 47-49(2007)
- 作者机构：
  
  1. 山东电力集团公司超高压输变电分公司
  2. 山东电力集团公司超高压输变电分公司山东济南250021
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM451.2
- Published：2007，
- 稿件说明：
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[1]刘矞,赵汝国,张鑫.接触不良对电容式电压互感器介损试验的影响[J].电力电容器,2007,{4}(01):47-49.

LIU YU, ZHAO RU-GUO, ZHANG XIN. Influence of Poor Contact on Dielectric Loss Test of Capacitive Voltage Transformer. [J]. Power capacitor & reactive power compensation, 2007, (1): 47-49.
[1]刘矞,赵汝国,张鑫.接触不良对电容式电压互感器介损试验的影响[J].电力电容器,2007,{4}(01):47-49. DOI：

LIU YU, ZHAO RU-GUO, ZHANG XIN. Influence of Poor Contact on Dielectric Loss Test of Capacitive Voltage Transformer. [J]. Power capacitor & reactive power compensation, 2007, (1): 47-49. DOI：

摘要

在测量电容式电压互感器（CVT）的过程中发现介损仪的测量线“Cx”接触不良会对测量结果造成偏大的影响

通过对CVT测量原理图的具体分析

得出由于测量线接触不良而产生一附加电阻Rf

由于Rf的影响使测量结果偏大

运行十几年的变电站设备不同程度的存在老化锈蚀现象

在进行电容型设备介质损耗试验时

接线是否接触良好

特别是测量线“Cx”接触是否良好将直接影响到测量结果。

Abstract

In the dielectric loss test of CVT

it is found that the measuring result would be influenced by poor contatct of C

connection.Based on the analysis of the CVT test principle

the additional resistance R

produced by the poor contact will increase the testing result.It should be paid more attentions to the connection of C

port during the test

especially to the substations operated for long time.

关键词

电容式电压互感器（CVT）分压电容器测量线“Cx”接触不良

Keywords

capacitive voltage transformer（CVT）Voltage-divider capacitorMeasuring cable "Cx"Lose contact

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