水电站接地系统的接地电阻简化计算若干问题

Several Problerns in Simplified Calculation of Resistance of Grounding Systems of Hydro—Electric Plants

现有的普通地网接地电阻计算公式并不适用于水电站接地系统,因为它们通常具有较大的(?)深。在Schwarz方法的基础上,本文提出了计算单一地网接地电阻的改进方法。此外,还导出了比较准确的互电阻表达式。这些实用公式已得到模拟实验检验,并被推广到双层土壤的情形。

Present formulae for calculating the resistance of common grounding grids are unsuitable for grounding systems of hydro-electric plants due to their great depth. Based on Schwarz's method, this paper presents an improved approach for calculating grounding resistance to of single grids. Moreover an exact equation for mutual resistance is derived. These practical formulae have been examined by model test and generalized for two—layer case.