油浸变压器绝缘受潮的介质响应诊断技术研究

doi:10.11930/j.issn.1004-9649.2014.9.88.5

中国电力 ›› 2014, Vol. 47 ›› Issue (9): 88-93.DOI: 10.11930/j.issn.1004-9649.2014.9.88.5

油浸变压器绝缘受潮的介质响应诊断技术研究

王文焕¹, 程锦², 刘有为¹

1. 中国电力科学研究院,北京 100192;
2. 国家电网公司运行分公司,上海 201601

收稿日期:2014-03-18 出版日期:2014-09-18 发布日期:2015-12-10
作者简介:王文焕（1984—）,男,山东单县人,工程师,从事电气设备的状态检修、设备运行可靠性研究及设备运行故障分析工作。E-mail: wangwh@epri.sgcc.com.cn

Study on the Dielectric Response Diagnostic Techniques for Oil-Immersed Transformer Insulation Damp

WANG Wen-huan¹, CHENG Jin², LIU You-wei¹

1. China Electric Power Research Institute, Beijing 100192, China;
2. Grid Operation Branch of State Grid Corporation of China, Shanghai 201601, China

Received:2014-03-18 Online:2014-09-18 Published:2015-12-10

摘要/Abstract

摘要： 现场条件下准确诊断变压器的受潮程度一直是难点,通过对变压器及油纸模型的介质响应测试,分析温度及水分对介质响应的影响。结果显示温度升高主要使介质响应曲线在频率轴方向向高频方向移动,而水分增加主要使介质响应曲线在介质损耗轴方向向上平移。复电容虚部极小值大小随温度变化不明显,但却随着水分的增加呈指数形式显著增加,这一规律,为准确判断变压器的受潮程度提供了一种依据。

关键词: 油浸变压器, 绝缘受潮, 介质响应, 诊断技术, 水分, 介质, 温度变化

Abstract: It has been a problem to accurately diagnose the moisture level of transformers under field conditions. Therefore, the effects of temperature and moisture content on the dielectric response are analyzed by the dielectric response testing on transformers and oiled paper model. The results show that with the increase of temperature,the dielectric response curve moves to the high-frequency area in frequency axis, while with the increase of moisture content,the dielectric response curve pans up in the longitudinal axis. In addition, the minimal value of the complex capacitance’s imaginary part changes insignificantly with the change of temperature; but it increases in exponential form with the increase of moisture content. This conclusion can provide a basis for accurate diagnosis of the moisture level.

Key words: oil-immersed transformer, insulation damp, dielectric response, diagnosis technology, water content, medium, temperature changes

中图分类号:

TM411

王文焕, 程锦, 刘有为. 油浸变压器绝缘受潮的介质响应诊断技术研究[J]. 中国电力, 2014, 47(9): 88-93.

WANG Wen-huan, CHENG Jin, LIU You-wei. Study on the Dielectric Response Diagnostic Techniques for Oil-Immersed Transformer Insulation Damp[J]. Electric Power, 2014, 47(9): 88-93.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2014.9.88.5

https://www.electricpower.com.cn/CN/Y2014/V47/I9/88

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油浸变压器绝缘受潮的介质响应诊断技术研究

Study on the Dielectric Response Diagnostic Techniques for Oil-Immersed Transformer Insulation Damp

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油浸变压器绝缘受潮的介质响应诊断技术研究

Study on the Dielectric Response Diagnostic Techniques for Oil-Immersed Transformer Insulation Damp

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