Generator neutral ground methods include non-ground, low impedance ground, high impedance ground and arc-suppression coil ground.

发电机中性点运行方式有中性点不接地、小阻抗接地、高阻抗接地、消弧线圈接地。

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This paper has derived calculating formulas of arbitrary two point faults in neutral non-grounded power system by bus impedance matrix. An example of calculation is carried out with IBM computer.

本文推导出用结点阻抗矩阵进行中性点不接地系统中任意两点异相接地故障计算公式，并编制程序在IBM机上调试通过，最后进行了算例分析。

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