Connecting with exterior grounding conductor is an effective measure to decrease ground grid grounding impedance.
引外接地是一种降低地网接地阻抗的有效措施。
This paper makes a study on principles of grounding impedance measurement and derives the formula for calculating grounding impedance.
对接地阻抗测量原理进行研究，分析推导出接地阻抗计算公式。
This paper makes a study on principles of grounding impedance measurement and derives the formula for calculating grounding impedance.
采用计算机辅助接地阻抗测量设备 ，可以克服传统的电压降测量法的种种弊端。
The fir st two methods have low precisions for influence oft these cases : line parameters , fault point grounding impedance , operating mode of power system.
前两种方法因受一些情况例如参数、故障点接地阻抗、运行模式等影响而具有较低的精确度，而行波法具有较高的精确性。
The inductive component of substation's grounding impedance is related to the size of the grounding system, soil resistivity and the injecting point of measuring current.
接地网接地阻抗中感性分量与接地网规模、土壤电阻率、电流注入点位置等因素有关。
Based on the analysis of the structural type, capacitance and impedance voltage of grounding transformer, a proper method of choosing grounding transformer is proposed in this paper.
通过接地变压器结构型式、容量和阻抗电压的分析研究，得出正确选择接地变压器的方法。
The methods are able to compute any parameter of grounding grids in power current, such as power ground impedance, touch and step voltage, potential differences within grounding grids and so on.
用该方法可以计算接地网的工频电流下的任何参数，如工频接地阻抗、接触电压和跨步电压、网内电位差等。
The methods are able to compute any parameter of grounding grids in power current, such as power ground impedance, touch and step voltage, potential differences within grounding grids and so on.
用该方法可以计算接地网的工频电流下的任何参数，如工频接地阻抗、接触电压和跨步电压、网内电位差等。
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