Analysis of 220kV Capacitor Voltage Transformer’s Hidden Fault

LV Dan; LI Dian

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Analysis of 220kV Capacitor Voltage Transformer’s Hidden Fault

更新时间：2024-09-14

- Analysis of 220kV Capacitor Voltage Transformer’s Hidden Fault
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Issue 3, Pages: 36-38(2006)
- 作者机构：
  
  1. 绍兴电力局
  2. 绍兴电力局浙江绍兴31200
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM451.2
- Published：2006，
- 稿件说明：
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[1]吕丹,李电.220kV电容式电压互感器的隐患事故分析[J].电力电容器,2006,{4}(03):36-38.

LV DAN, LI DIAN. Analysis of 220kV Capacitor Voltage Transformer’s Hidden Fault. [J]. Power capacitor & reactive power compensation, 2006, (3): 36-38.
[1]吕丹,李电.220kV电容式电压互感器的隐患事故分析[J].电力电容器,2006,{4}(03):36-38. DOI：

LV DAN, LI DIAN. Analysis of 220kV Capacitor Voltage Transformer’s Hidden Fault. [J]. Power capacitor & reactive power compensation, 2006, (3): 36-38. DOI：

摘要

通过现场测试

发现电容式电压互感器的电容量误差在国家标准之内

但电容量异常增加

且三相线电压明显不平衡

经进一步试验分析

判定电容器内部串联电容已部分击穿

提出了电容式压变运行及测试相应注意事项。

Abstract

Based on the practical tests

It is found that the CVT’s capacitance increases abnormally

and the three phase voltages are obviously imbalanced

although the error of CVT′s capacitance is within the requirement specified by the national standard.Through further examination

it can be concluded that the inner in-series capacitors have been partly broken down.The attentions on CVT′s operation and testing are proposed.

关键词

电容式电压互感器电容量异常

Keywords

capacitor voltage transformer（CVT）capacitanceAbnormality

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A Problem to be Noticed for On-site Dielectric Loss Measurement of the CVT Voltage Dividing Capacitor

Discussion on the Method of Measuring and Calculating the Capcitance of CVT

Function of Circuit-breaker Capacitors in Reducing Rise Rate of the Recovery Voltage

Test Method on Site of Dielectric Loss for CVT

Failure Analysis of a 220kV CVT

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