Analysis and Calculation of the Capacitance Inaccuracy in the Test of 220 kV CVT without Disconnecting Wire

LI Shun-yao; WAN Si-wei

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Analysis and Calculation of the Capacitance Inaccuracy in the Test of 220 kV CVT without Disconnecting Wire

更新时间：2025-04-26

- Analysis and Calculation of the Capacitance Inaccuracy in the Test of 220 kV CVT without Disconnecting Wire
- High VoltageApparatus Issue 6, Pages: 468-469(2006)
- 作者机构：
  
  1. 广东东莞供电局
  2. 广东东莞供电局广东东莞523000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM451
- Published：2006
- 稿件说明：
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[1]李顺尧,万四维.220kV CVT不拆线试验时电容值误差分析与计算[J].高压电器,2006(06):468-469.

LI Shun-yao, WAN Si-wei. Analysis and Calculation of the Capacitance Inaccuracy in the Test of 220 kV CVT without Disconnecting Wire[J]. High voltageapparatus, 2006, (6): 468-469.
[1]李顺尧,万四维.220kV CVT不拆线试验时电容值误差分析与计算[J].高压电器,2006(06):468-469. DOI：

LI Shun-yao, WAN Si-wei. Analysis and Calculation of the Capacitance Inaccuracy in the Test of 220 kV CVT without Disconnecting Wire[J]. High voltageapparatus, 2006, (6): 468-469. DOI：

摘要

现场通过对一组220 kV CVT不拆线进行预防性试验

对用常规法测量C2时电容值误差的原因进行分析

得出的结果是由于不拆线进行试验

电容C11

C1的接入

使得标准臂的参数发生了变化。因此

220 kV CVT按常规办法读取C2电容量后

必须乘以系数0.56才是电容C2的实际值。

Abstract

Through the preventive test carrying out on a 220 kV CVT without disconnecting wire

the reasons of the capacitance C2 inaccuracy are analyzed

and it is founded that the reason is that the parameters of the standard arm have been changed by C11 and C1 during the test.Therefore

to attain the actual value of the C2.

the value which obtained by normal method must multiply by factor 0.56.

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