A practical approach for computation of grid current

Seedher H.R.; Arora J.K.

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A practical approach for computation of grid current

机译：计算电网电流的实用方法

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When a ground fault occurs at a substation, the part of the fault current that flows between the grounding system and the surrounding earth is known as grid current. This current determines the magnitude of the dangerous voltages within and around the station. It may vary from a few percent to almost 100% of the earth fault current. It is necessary to make an accurate estimate of grid current for an economical and safe design of ground electrode. The available analytical methods for determining the grid current require complete system data, which is voluminous and often unavailable. In this paper a simple and accurate analytical method for determining the grid current is presented. The method requires limited data. A computer program based on the proposed method has been developed and tested.

机译：当变电站发生接地故障时，在接地系统和周围大地之间流动的部分故障电流称为电网电流。该电流确定了站内和站周围的危险电压的大小。它可能从接地故障电流的百分之几到几乎100％不等。为了经济，安全地设计接地电极，有必要对栅极电流进行准确估计。用于确定电网电流的可用分析方法需要完整的系统数据，该数据非常庞大且经常不可用。本文提出了一种确定电网电流的简单准确的分析方法。该方法需要有限的数据。已经开发并测试了基于所提出方法的计算机程序。

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《IEEE Transactions on Power Delivery》 |1999年第3期|P.897-902|共6页
作者
Seedher H.R.; Arora J.K.;
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A practical approach for computation of grid current

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