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首页> 外文期刊>Water and Energy International >OPTIMAL DESIGN OF EARTHING SYSTEM FOR HIGH VOLTAGE AND EXTRA HIGH VOLTAGE AC SUBSTATIONS
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OPTIMAL DESIGN OF EARTHING SYSTEM FOR HIGH VOLTAGE AND EXTRA HIGH VOLTAGE AC SUBSTATIONS

机译：高压和超高压交流变电站接地系统的优化设计

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摘要

The earthing system of a substation shall be optimal, safe and economical. Accurate measurement of soil resistivity, proper analysis of soil resistivity measurements, optimal grid spacing, proper assumption of fault currents, analysis with two or multi layers soil model play important roles in optimal, safe and economical design of earthing system of a high voltage or an extra high voltage substation. The paper describes different aspects of designing optimal, safe and economical earthing mat of a high voltage or an extra high voltage AC substation in POWERGRID. The methodology of optimizing quantity of main Earthmat and risers by optimally designing the grid spacing where the substation area is very large and the soil resistivity is very low with homogeneous type soil or by adopting satellite Earthmat or deep driven vertical electrodes in hilly area where the area of the substation is considerably less and the soil resistivity is relatively high and non-uniform have been elaborated.
机译：变电站的接地系统应是最佳，安全和经济的。准确测量土壤电阻率，对土壤电阻率测量值进行适当分析，优化网格间距，正确确定故障电流，使用两层或多层土壤模型进行分析在高压或高压接地系统的优化，安全和经济设计中起着重要作用特高压变电站。本文介绍了在POWERGRID中设计最佳，安全和经济的高压或超高压交流变电站接地垫的不同方面。通过优化设计变电站面积很大且土壤电阻率非常低的变电站面积大且土壤电阻率很低的主要地垫和立管数量的方法，或者在该地区的丘陵地区采用卫星地垫或深驱动垂直电极变电站的接地电阻要小得多，并且土壤电阻率相对较高，并且已经阐述了不均匀性。

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