Diagnosing transformer oil-paper insulation by hybrid equivalent circuit

被引：0

作者：

Lin Z.-Y. ^{[1
]}

Cai J.-D. ^{[1
]}

机构：

[1] College of Electrical Engineering and Automation, Fuzhou University, Fuzhou

来源：

Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2016年 / 20卷 / 03期

关键词：

A hybrid equivalent circuit; Oil-paper insulation; Return voltage; Transformer;

D O I：

10.15938/j.emc.2016.03.001

中图分类号：

学科分类号：

摘要：

Aiming at the complexity of dielectric relaxation response of transformer oil-paper insulation, a hybrid equivalent circuit new model was established to characterize the relaxation process of oil-paper insulation system according to the characteristics of oil-paper insulation. According to theory analysis of hybrid equivalent circuit, formula of the hybrid equivalent circuit parameters and the recovery voltage were deduced. Test data of a transformer recovery voltage was adopted to verify the method, and then the test data of a transformer before and after being maintained was used to diagnose transformer oil-paper insulation system based on hybrid equivalent circuit. The results show that: the return voltage curve which is gained by the hybrid equivalent circuit method inosculates very well with those gained by the field measurements, and the hybrid equivalent circuit can diagnose aging of transformer oil-paper insulation dielectric accurately. © 2016, Editorial Department of Electric Machines and Control. All right reserved.

引用

页码：1 / 5

页数：4

共 15 条

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