Analysis for Transient Electric Field Computation of GIS Basin Insulator Under Lightning Impulse Voltage

被引：0
|
作者：
Yang W. [1 ]
Zhu T. [1 ]
Tian Y. [2 ]
Ke Y. [2 ]
Zhu S. [1 ]
Yang X. [3 ]
机构：
[1] State Grid Anhui Electric Power Company Limited Research Institute, Hefei
[2] State Grid Anhui Electric Power Company Limited, Hefei
[3] School of Electrical Engineering and Automation, Hefei University of Technology, Hefei
来源：
Yang, Wei (hfut_mars@163.com) | 2020年 / Science Press卷 / 46期
关键词：
Complex permittivity; Finite element method; Gas insulated switchgear basin insulator; Lightning impulse; Transient electric field;
D O I：
10.13336/j.1003-6520.hve.20200331007
中图分类号：
学科分类号：
摘要：
The transient electric field distribution of GIS basin insulator under lightning impulse voltage is of great importance for its safe operation. The establishment time of turning-direction polarization of basin insulator material under lightning impulse voltage is generally neglected, and then the electrostatic field under power frequency voltage has usually been used to replace the transient electric field in engineering. In this paper, the transient electric field calculation of the basin insulator is realized by using the established mathematical model of the transient electric field of the basin insulator and the dielectric spectrum analysis method based on LM algorithm. The distribution of transient electric field on the surface of shielding cover, basin insulator and the interface between basin and central conductor has been obtained and then investigated. The results from the traditional method have also been compared. The maximum electric field intensity on the surface of the concave shielding cover and basin is higher than that from the transient analysis. The differences are -2.2%, -1.21% and -4.37%, respectively. The difference of maximum electric field strength between two methods on the interface is about 4.46%. The method can be adopted to accurately compute the electric field distribution of each kf GIS basin insulator within an acceptable computation time. And the research in this paper can provide calculation of key position and analysis references for the insulation design of GIS basin insulator. © 2020, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：807 / 814
页数：7
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