Electric Fields Distribution of EHV AC Transmission Line Composite Insulators with Internal Conductive Defects

被引：0
|
作者：
Zhao Shen [1 ]
Li Yuze [2 ]
Zhang Bo [3 ]
机构：
[1] State Grid Zhejiang Elect Power Co LTD, Jinhua Elect Power Co, Jinhua, Zhejiang, Peoples R China
[2] Chongqing Univ, Sch Elect Engn, Chongqing, Peoples R China
[3] Wuhan Univ, Sch Elect Engn & Automat, Wuhan, Hubei, Peoples R China
来源：
2019 IEEE ASIA POWER AND ENERGY ENGINEERING CONFERENCE (APEEC 2019) | 2019年
关键词：
composite insulator; conductive defect; electric field distrihution; finite element method;
D O I：
10.1109/apeec.2019.8720704
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The internal conductive defects occur when the core rod of the composite insulator is damaged due to moisture. The accurate detection of the defective composite insulator is vital to the safety of the live working on transmission lines. Based on the finite element method, the 3D models 500 kV EHV transmission line composite insulators with the internal conductive defects were built in this paper. The electric field distributions of the different defective composite insulators were calculated, and the influences of the conductive defect length and position on the electric field distribution were also given. The calculation results show that the electric field distribution of the composite insulators with the internal conductive defects will appear obvious distortion. The electric field values at the high voltage end of the insulator and the both ends of the defect will also be increased significantly. These features can be directly applied to the defective composite insulators detection.
引用
收藏
页码：115 / 120
页数：6
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