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高速铁路综合接地效果评价系统

, PP. 28-34

Keywords: 高速铁路,综合接地,钢轨电位,评价系统,接地阻抗,分流系数

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Abstract:

以钢轨电位的降低程度为评价综合接地效果的指标,分析了钢轨电位与综合地线接地阻抗和分流系数的关系,开发了综合接地效果评价系统,研究了影响综合地线接地阻抗和分流系数的主要因素,对比了综合接地效果评价系统的理论结果与现场测试结果。分析结果表明钢轨电位随着综合地线接地阻抗的增大而增大,随着分流系数的增大而减小;综合地线的选材、土壤电阻率及横向连接距离对接地阻抗和分流系数有较大影响,而埋设深度对其影响较小;接地电阻、分流系数的理论值和测试结果差异分别为18%、5.62%。可见,系统的计算误差较小,可用于高速铁路综合接地系统的设计与施工。

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