覆冰复合绝缘子电位分布有限元仿真

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Abstract There are few investigations on the potential and electric field distribution of the iced composite insulator at home and abroad. It is very important for the design, operation and maintenance of iced insulators to calculate the potential distribution along iced composite insulator and the geometric parameter of the grading ring. In this paper, the research of the potential distribution of the iced composite insulator on 220kV transmission lines is carried out through the quasi-static field finite element method. The two-dimensional axial symmetry models of the iced composite insulator were given by Ansys. After changing the length and thickness of ice on the composite insulator, the potential distribution is studied and the differences of the potential distribution between the dry ice and wet ice are analyzed. At the same time, we investigated the effect of the grading ring for improving the evenness of the potential distribution on the iced composite insulator by changing the parameters of the grading ring. The results show that the aberration of potential distribution line becomes more serious, as the ice grows, before the large sheds are bridged. When the large sheds are completely bridged, the change of the potential distribution is the most significant. In addition, the calculation results show that the unevenness of wet ice’s potential distribution is more serious than the dry ice’s, and the dry ice is affected by the ice thickness more significantly than the wet ice. Finally, the reasonable geometric parameter of the grading ring for the iced composite insulator is put forward.

Key words： Ice composite insulator grading ring potential distribution finite element method simulation analysis

Received: 08 November 2011 Published: 20 March 2014

PACS:	TM151
	TM216

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	Articles by authors
	LI Weiguo
	Hao Yanpeng
	Xiong Guokun
	Zhao Yuming
	Luo Bing

Cite this article:

LI Weiguo,Hao Yanpeng,Xiong Guokun等. Simulation and Analysis of Potential Distribution of Iced Composite Insulator Based on Finite Element Method[J]. Transactions of China Electrotechnical Society, 2012, 27(12): 29-35.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I12/29

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