Analysis of Imaginary Part of Frequency Domain Spectroscopy for Oil-Paper Insulation Transformer

被引：0

作者：

Zhang D. ^{[1
]}

Liu X. ^{[2
]}

Zhan J. ^{[3
]}

Li X. ^{[2
]}

Tian J. ^{[4
]}

Mu H. ^{[1
]}

机构：

[1] State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an

[2] State Grid Shaanxi Electric Research Institute, Xi'an

[3] State Grid Zhejiang Electric Research Institute, Hangzhou

[4] Shenzhen Power Supply Co. Ltd, Shenzhen

来源：

Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷 / 04期

关键词：

Conductance loss; Extended Debye model; Frequency domain spectroscopy; Impurity ions; Matlab modeling;

D O I：

10.19595/j.cnki.1000-6753.tces.180080

中图分类号：

学科分类号：

摘要：

The insulation diagnosis method based on frequency domain dielectric spectrum (FDS) has been widely used in field test because of its nondestructive testing and rich insulation information. However, FDS measurement results are susceptible to many factors, such as impurity ion, temperature changes, and transformer structure, and so on. The interpretation on the dielectric properties of oil paper insulation with the influence of moisture content and impurity ion concentration is not very ideal, thus more appropriate and effective simulation and experimental analysis of dielectric response characteristics are needed. In this paper, based on the experimental results, the extended Debye model parameters of the field transformer are obtained. Then, the influence of the insulation resistance value in the Debye model on the FDS curve is simulated by Matlab modeling. The results show that the variations of the FDS conductance process is obviously affected by the impurity ions, different from those by the water content. The impurity ions mainly affect the low frequency section of the imaginary part of the complex capacitor. © 2019, Electrical Technology Press Co. Ltd. All right reserved.

引用

页码：847 / 854

页数：7

共 15 条

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