The Affect of 500kV CVT′s Top Terminal Grounding on the Dividing Capacitance C<sub>2</sub>

ZHAO Ru-guo

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The Affect of 500kV CVT′s Top Terminal Grounding on the Dividing Capacitance C₂

更新时间：2024-09-14

- The Affect of 500kV CVT′s Top Terminal Grounding on the Dividing Capacitance C₂
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Issue 3, Pages: 29-31(2006)
- 作者机构：
  
  山东电力超高压公司,山东,济南,250021
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM451.2
- Published：2006，
- 稿件说明：
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[1]赵汝国.500kV电容式电压互感器顶端接地对分压电容C_2的影响[J].电力电容器,2006,{4}(03):29-31+38.

ZHAO RU-GUO. The Affect of 500kV CVT′s Top Terminal Grounding on the Dividing Capacitance C₂. [J]. Power capacitor & reactive power compensation, 2006, (3): 29-31.
[1]赵汝国.500kV电容式电压互感器顶端接地对分压电容C_2的影响[J].电力电容器,2006,{4}(03):29-31+38. DOI：

ZHAO RU-GUO. The Affect of 500kV CVT′s Top Terminal Grounding on the Dividing Capacitance C₂. [J]. Power capacitor & reactive power compensation, 2006, (3): 29-31. DOI：

摘要

在新建变电站的验收中

发现电容式电压互感器（CVT）顶端接地对分压电容C2的测量值产生了影响。通过对测量C2时原理接线图的分析

知道由于顶端接地

每次测得的电容值C2均需要除以校正系数K值后

方能够得到准确的实际值

再进行前、后数据比较

可以保证每次所测得的电容值前、后具有可比性

并能够准确地判断CVT的绝缘状况是否良好。

Abstract

In the acceptance test of new built substation

it is found that the 500kV CVT′ top terminal grounding will affect the dividing capacitance C

.Through analysis on the connection principle of measurement

it is concluded that

due to such grounding

the reality value of C

must be corrected by a coefficient K.In each measurement

the measured value of C

should be divided by K

and the values gotten from different measurements should be compared and analyzed

thus the insulation of CVT can be determined accurately.

关键词

电容式电压互感器（CVT）分压电容校正系数

Keywords

capacitor voltage transformer（CVT）Dividing capacitorCorrection coefficient

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School of Electrical Power Engineering,North China Electric Power University

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The Affect of 500kV CVT′s Top Terminal Grounding on the Dividing Capacitance C2

DOI：

摘要

Abstract

关键词

Keywords

references

The Affect of 500kV CVT′s Top Terminal Grounding on the Dividing Capacitance C₂