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电网技术  2010 

任意块状结构土壤中接地的边界元法分析

, PP. 170-174

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Abstract:

为计算分析任意块状结构土壤中的接地问题,根据边界元法基本原理,给出了一种通用算法,详细介绍了该算法的原理和计算公式。该算法以边界面元的电位和导体元的电位梯度为未知数,列写并解线性方程组,进而得到各接地参数。运用Matlab编程计算简单块状结构土壤接地模型,与CDEGS软件计算结果的比较表明了该方法的正确性。针对实际中经常出现的高台模型,给出了通用算法的计算结果,并对高台模型增加垂直接地极以减小接地电阻进行了计算分析。算例计算结果表明,该算法计算速度较快,可用于任意块状结构土壤中任意接地模型的计算分析。

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