Influence of temperature on Cole-Cole dielectric model of oil-immersed bushing

2nd International Conference on Design, Materials, and Manufacturing

材料科学;机械制造

Wang, K.^1 ; Chen, X.J.^2 ; Xu, X.W.^1 ; Liu, G.Q.^1 ; Zou, D.X.^1 ; Liu, W.D.^2

Yunnan Electric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming

650217, China^1

College of Electrical Engineering, Southwest Jiaotong University, Chengdu

610031, China^2

关键词: Cole-Cole dielectric model;    Complex permittivity;    Dielectric modeling;    Dielectric response;    Frequency domains;    High frequency HF;    Real and imaginary;    Temperature variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/220/1/012017/pdf
DOI  :  10.1088/1757-899X/220/1/012017

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this paper, 72.5 kV oil-immersed bushing was produced in laboratory. The frequency-domain dielectric response tests of oil-immersed bushings were carried out at different test temperatures. The experimental data were fitted by using the modified double relaxation Cole-Cole dielectric model. The influence of temperature variation on the dielectric response test of the oil-immersed bushing and the Cole-Cole dielectric model parameters were analysed. The results showed that with the increase of the test temperature, the spectrum of the real and imaginary of the complex permittivity are shifted to the high frequency direction; the parameters of the dielectric model are significantly affected by temperature.