Ambient Temperature Effect on Partial Discharge of Capacitive Screen of Dry-type Current Transformer

SU Yong-hua; YANG Hong-feng

doi:10.13296/j.1001-1609.hva.2013.01.020

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Ambient Temperature Effect on Partial Discharge of Capacitive Screen of Dry-type Current Transformer

更新时间：2025-04-26

- Ambient Temperature Effect on Partial Discharge of Capacitive Screen of Dry-type Current Transformer
- High VoltageApparatus Vol. 49, Issue 1, Pages: 130-133(2013)
- 作者机构：
  
  平高集团有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2013.01.020
  CLC： TM452.3
- Published：2013
- 稿件说明：
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[1]苏永华,杨宏峰.环境温度对干式电流互感器电容屏局部放电的影响[J].高压电器,2013,49(01):130-133.

SU Yong-hua, YANG Hong-feng. Ambient Temperature Effect on Partial Discharge of Capacitive Screen of Dry-type Current Transformer[J]. High voltageapparatus, 2013, 49(1): 130-133.
[1]苏永华,杨宏峰.环境温度对干式电流互感器电容屏局部放电的影响[J].高压电器,2013,49(01):130-133. DOI： 10.13296/j.1001-1609.hva.2013.01.020.

SU Yong-hua, YANG Hong-feng. Ambient Temperature Effect on Partial Discharge of Capacitive Screen of Dry-type Current Transformer[J]. High voltageapparatus, 2013, 49(1): 130-133. DOI： 10.13296/j.1001-1609.hva.2013.01.020.

摘要

在电力系统中

局部放电是造成绝缘劣化的主要原因。笔者针对非运行中的干式电流互感器产品所存在的局部放电问题进行了深入的分析与研究

并通过试验数据的比对

找出引起局部放电测量水平变化的根源所在:环境温度对电容屏结构的干式电流互感器的局部放电测量水平的影响。对试品烘烤或通流20 h左右

试品局部放电测量水平恢复正常。

Abstract

In electric power system

partial discharge is a main cause of insulation deterioration.In this paper

the partial discharge problem in dry-type current transformers is analyzed.Comparing with test data

the ambient temperature effect on partial discharge measurement level of capacitive screen of dry-type transformer is achieved.A countermeasure against the effect is proposed

with which the partial discharge measurement level of the transformer samples can return to normal by warming or electrifying them for about 20 hours.

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