resistance grounding

This paper gives a method of measuring grounding resistance of large earthing grid with non-power-frequency. According to the method, we can get precise measurement result, and the frequency of test current can be very closed to power-frequency.

介绍了一种地网接地电阻异频测量方法，该方法在试验电流频率与系统工频相当接近的条件下，可获得稳定可信的测量结果。

Analysis of Error in Measurement of Lightning Protection Grounding Resistance

防雷接地电阻测量误差分析

In this paper, in order to better show the actual operation of the power system, the maximum to simulate the actual power system grounding fault model, such as arc grounding, metal grounding, after the transition, such as resistance grounding.

为了能更好的显示电力系统的实际运行情况，本试验台最大限度的模拟了实际电力系统的接地故障模型，如弧光接地、金属性接地、经过渡电阻接地等。

In a low-resistance grounding system, when the multi-loop line occurs grounding fault inphase, It will cause large changes of the zero-sequence current distribution characteristics, which will cause zero-sequence protection refused to action.

在小电阻接地系统中，当多回线同相发生接地故障时，将引起零序电流的分布特征发生较大变化，从而引起零序保护的拒误动。

Analysis of the Neutral, the low resistance grounding and arc suppression coil grounding through the advantages and disadvantages of three ways, using MATLAB simulation under different single phase grounding fault in the operation.

分析了中性点不接地、经小电阻接地和经消弧线圈接地三种方式的优缺点，用MATLAB对不同接地方式下单相接地故障时的运行情况进行了仿真。

In reference [ 2] the grounding mesh model for Three Gorges Hydroelectric Station is calculated and the conclusion is that under a certain condition of technology and economy it is possible to reduce the grounding resistance of the power station to 0.15W or lower.

文献[2]对三峡电站的模型地网进行了计算，认为在一定的技术经济条件下，将三峡电站的接地电阻降低至0.15W及以下是可能的。

Grounding resistance is an important technical parameter of grounding system of electric power plant and transformer substation.

接地电阻值是发电厂、变电站接地系统的重要技术指标。

GN-JDR5 type ground resistance measurement tester for large-scale grounding grid is developed based on high-frequency link technology and DSP control technology.

为了解决缺乏大型地网接地电阻测量仪器的难题，课题组采用高频链技术和DSP控制技术，研制出GN-JDR5型大型地网接地电阻测试仪。

The machine contain main functions of four testing apparatus, it can automatic test leaking current, grounding electric resistance, dielectric intensity, resting voltage and print testing data.

详细说明具备四种测试仪的全部主要技术性能，可连续自动测试漏电流、接地阻抗、电介质强度、剩余电压。可打印测试数据。

The location and quantity of arrestor and impulse grounding resistance of towers has direct influence on lighting overvoltage.

变电站避雷器安装位置和数量及输电线终端塔的接地电阻对雷电过电压有着直接的影响。