Insulation status detection on the high voltage bushing by FRA method

Author

Chunyan, Zang ; Jinxing, Gan ; Dexin, Nie ; Zhenbo, Du ; Zhenpeng, Tang ; Xiaoqiang, Deng

Author_Institution

Inst. of Electr. & Electron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2012

fDate

21-24 May 2012

Firstpage

1

Lastpage

4

Abstract

This paper mainly discusses the mechanism for FRA method on bushing insulation detection. It builds several RC models of the bushing instruction in MATLAB, as well as does some simulation work to observe the change of the FRA curve with different parameters. It also takes the influence of the valve wire into consider and get some useful conclusions. Simulation results show that the obvious indentation in the FRA curve will appear when the bushing has some insulation defects. The sum and change state of the indentation in FRA curve is related to the degree and relaxation polarization of the insulation defects of the bushing. It is found that the simulation and on-spot detection curves have tallies with each other, which verifies the feasibility of FRA method in this field.

Keywords

bushings; frequency response; insulation testing; FRA curve; MATLAB; RC models; bushing instruction; bushing insulation detection; frequency response analysis; high voltage bushing; indentation; insulation defects; insulation status detection; on-spot detection curves; relaxation polarization; Capacitance; Phase measurement; Resonant frequency; Wires; Bushing; FRA; Insulation detection; RC Model;

fLanguage

English

Publisher

ieee

Conference_Titel

Innovative Smart Grid Technologies - Asia (ISGT Asia), 2012 IEEE

Conference_Location

Tianjin

Print_ISBN

978-1-4673-1221-9

Type

conf

DOI

10.1109/ISGT-Asia.2012.6303214

Filename

6303214