±800kV圆环接地极电流场温度场耦合计算

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Abstract It is very complex to calculate current field and temperature field of DC grounding electrode. At first, based on coupling method of electric field and circuit, this paper computes current field of ±800kV cirque grounding-electrode on the condition of self-resistance of electrode. Then, the result of current field is considered as a boundary condition to compute temperature field of the electrode by 3-D finite element method. In order to verify the validity of the method, an engineering case is compared with calculation results. In addition, based on the computation method, the paper researches grounding performance of different cirque electrode on the condition of same electrode length, and gives some reference suggestions to practical engineering. Afterwards, a series of influencing factors of grounding performance are analyzed such as soil resistivity, embedded depth of electrode, and so on.

Key words： ±800kV current field temperature field DC grounding-electrode grounding resistance step voltage

Received: 15 January 2008 Published: 12 February 2014

PACS:	TM862
	TM721.1

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	Articles by authors
	Wang Jianwu
	Wen Xishan
	Du Zhongdong
	He Gang

Cite this article:

Wang Jianwu,Wen Xishan,Du Zhongdong等. Coupling Calculation of Current Field and Temperature Field of ±800kV Cirque DC Grounding-Electrode[J]. Transactions of China Electrotechnical Society, 2009, 24(3): 14-19.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2009/V24/I3/14

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作者简介
王建武男, 1981年生, 博士研究生, 从事高压绝缘及直流接地的研究。
文习山男, 1962年生, 教授, 博士生导师, 长期从事电力系统防雷接地、高压绝缘的研究。