分层土壤任意块状基础的接地计算方法

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Abstract Considering the grounding model of a embedded arbitrary massive texture foundation in the layered-soil, the grounding computation with massive texture foundation in layered-soil is presented in this paper, which avoids drawbacks of traditional simplified models. The horizontal layered soil and the multiple layered-soils embedded by arbitrary massive texture foundation are both considered. According to moment method (MOM), electrostatic field integral equations are discretized.The current density for rods segment and surface charge density for boundary surface between varies medium are set as the variables, and the linear equations are listed and solved based on C++.The grounding resistance is calculated for typical ultra high voltage (UHV) tower foundation, which proves the correctness and validity for the algorithm. The relationship between the grounding resistances of the UHV tower foundation and the model parameters of two-layer soil has been discussed. The increasing thickness of upper layer is the decisive factor for the grounding resistance. When the top soil thickness is small, the decrease of the lower layer resistivity has eminent impacts on the decrease of the tower foundation grounding resistance. Also the accuracy in evaluating the lower layer resistivity is important for the grounding calculation.

Key words： Layered-soils with massive texture foundation grounding resistance ultra high voltage tower foundation method of moments

Received: 30 July 2015 Published: 20 April 2016

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TM753

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	Pan Wenxia
	Liu Tongchui
	Wang Bing
	Dai Min

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Pan Wenxia,Liu Tongchui,Wang Bing等. Grounding Computation Method for Layered-Soil with Arbitrary Massive Texture Foundation[J]. Transactions of China Electrotechnical Society, 2016, 31(7): 145-151.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I7/145

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