Inversion of Oil-Immersed Paper Resistivity in Transformer Based on Dielectric Loss Factor

被引：4

作者：

Ruan, Jiangjun ^{[1
]}

Xie, Yiming ^{[1
]}

Jin, Shuo ^{[2
]}

Shi, Yu ^{[3
]}

Tian, Yu ^{[1
]}

Deng, Yongqing ^{[1
]}

机构：

[1] Wuhan Univ, Sch Elect Engn & Automat, Wuhan 430072, Hubei, Peoples R China

[2] Hubei Univ Technol, Sch Elect & Elect Engn, Wuhan 430068, Hubei, Peoples R China

[3] Anhui Univ Sci & Technol, Sch Elect & Informat Engn, Huainan 232001, Peoples R China

来源：

IEEE ACCESS | 2019年 / 7卷

关键词：

Inversion; oil-immersed paper resistivity; dielectric loss factor; Newton-Raphson method; transformer; POWER TRANSFORMERS; FREQUENCY-DOMAIN; INSULATION; DIAGNOSTICS; REPLACEMENT; LIFE;

D O I：

10.1109/ACCESS.2019.2907288

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The aging of the transformer oil-paper insulation distributes spatially, which results in changes in paper resistivity in different regions. This paper establishes an iterative inversion algorithm using the finite element method to calculate the oil-immersed paper resistivity in different regions of a transformer. This algorithm sets the transformer dielectric loss factor tan delta at low frequency, the dielectric parameters of the transformer oil as inputs and the oil-immersed paper resistivity as output. The resistivity obtained from inversion can be used as a reference to access the insulation state of the oil-paper insulation. This paper aims at achieving the nondestructive detection of the partial state of the oil-paper insulation.

引用

页码：44050 / 44058

页数：9

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