Influence of Moisture on Frequency Domain Spectroscopy of Silicone Oil Impregnated Insulation Paper

被引：0
作者：
Zhou L. [1 ]
Li Z. [1 ]
Liao W. [1 ]
Zhang J. [1 ]
Wang D. [1 ]
机构：
[1] College of Electrical Engineering, Southwest Jiaotong University, Chengdu
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 16期
关键词：
frequency domain spectroscopy; Havriliak-Negami model; moisture; separation of imaginary part of complex permittivity; Silicone oil impregnated insulation paper;
D O I：
10.19595/j.cnki.1000-6753.tces.210364
中图分类号：
学科分类号：
摘要：
As a potential substitute of mineral oil, silicone oil has been widely used in power equipment such as transformers. In order to study the influence of moisture on the frequency domain spectroscopy of silicone oil impregnated insulation paper, firstly, this paper proposed a method to separate conductance loss and polarization loss in the imaginary part of the complex permittivity by theoretical derivation, prepared silicone oil impregnated insulation paper samples with different moisture contents, and separated the conductivity loss and polarization loss in the test results and analyzed the influence of moisture on dielectric response process. The relationship between dielectric characteristic parameters and moisture content was extracted through the Havriliak-Negami model parameter identification. The results show that there are loss peaks in all polarization loss curves of silicone oil impregnated insulation paper, and as the moisture content increases, the frequency band of the loss peak gradually widens and moves toward the high frequency. The proposed method can significantly improve the data reconstruction accuracy of HN model. The functional relationship of the integral feature quantity S1 and S2, the dielectric relaxation strength and the moisture content can provide a reference for moisture evaluation of silicone oil impregnated insulation paper. © 2022 Chinese Machine Press. All rights reserved.
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页码：4225 / 4234
页数：9
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