引外接地是一种降低地网接地阻抗的有效措施。
Connecting with exterior grounding conductor is an effective measure to decrease ground grid grounding impedance.
接地阻抗的测量是电气设备与系统中一个非常重要的问题。
Measuring earthed impedance is a all-important question in the electric equipment and system.
本文提出了利用发出冲击电流信号测量接地阻抗的新方法。
This paper has presented a new method of measuring ground impedance by generating impulse current signal .
接地阻抗的测量是电气设备与系统中一个非常重要的问题。
Measuring earthed impedance is a all-important question in the electric equipment and system. The paper introduces a method using the computer as assistant equipment to measure earthed 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。
This paper makes a study on principles of grounding impedance measurement and derives the formula for calculating grounding impedance.
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。
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.
介绍了一种采用计算机辅助测量设备的接地阻抗的方法，叙述了该方法的原理及硬件通道。
The paper introduces a method using the computer as assistant equipment to measure earthed impedance. It depicts the principle and hardware channel of the method.
提出了一种基于负序电压极化的自适应接地阻抗继电器方案，并对其动作特性进行了分析。
An adaptive impedance relay based on negative sequence voltage polarization is proposed, and its operating characteristic is analyzed.
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.
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 machine contain main functions of above four testing apparatus, it can automatic test leaking current, grounding electric resistance, dielectric intensity, resting voltage and print testing data.
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 fir st two methods have low precisions for influence oft these cases : line parameters , fault point grounding impedance , operating mode of power system.
简单介绍了级间配合，抑制横向过电压的产生，以及接地阻抗的简单计算和正确选用等，以达到对电源系统的有效防雷保护。
The paper describes the coordination of the multi-grade surge protection, the suppression of the transfer over voltage, as well as the calculation a…
当基极接地时，晶体管Q4便成为一个非常高的阻抗。
With the base grounded, transistor Q4 is a very high impedance.
采用二维电感模型，计算了带接地导体的有耗互连线的频变阻抗。
Two-dimensional inductance model is applied to calculate the frequency-dependent impedance of lossy interconnect lines with ground conductor.
为了实现波束可控，可用开关控制无源单极子的接地状态来改变其阻抗和电流分布。
In order to get beam steering, the switches control the states of the parasitic monopoles to change their impedance and current distribution.
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。
Generator neutral ground methods include non-ground, low impedance ground, high impedance ground and arc-suppression coil ground.
接地面虽能解决地线阻抗的问题，但不是万能的。
Ground planes solve many ground impedance problems, but not all.
对于后备保护装置防止高阻抗接地故障，将配置一只双极方向过电流继电器，同瞬时跳闸附件的时间成反比。
For backup protection against high resistive ground faults, there will be a dual polarized directional overcurrent relay, inverse time with instantaneous trip attachment.
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。
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.
从理论上分析了同杆并架双回线跨线不接地故障时距离继电器测量阻抗的变化规律。
This paper analyses the rule of variations measuring impedance of distance relay when phase to phase fault occurs between two lines on double circuit line on the same pole (DLSP).
EDF通过总结和研究中压电网30多年的运行经验，决定将中性点低阻抗接地方式，全部改为谐振接地方式。
Summarizing the operating experience over 30 years, EDF determines to change low resistance grounding into resonance grounding in MV network.
对于不同长度的电缆线路其金属护套的接地方式亦不尽相同，从而对电缆线路参数，尤其是对零序阻抗将产生较大的影响。
The earthing method of the metal sheath varies somewhat in different cable lengths, which affects greatly line parameters, especially zero sequence impedance.
偏移特性阻抗继电器常用于小电流或大电流接地系统中作为输电线路距离保护的测量元件。
LZ-22 partial impedance relay usually used as measuring element on distance protection of the line at small or big current power system.
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。
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.
然后，研究在各种EBG结构下，在电源和接地层内侧（即靠近介质层的一侧）增加高磁导率材料涂层对供电系阻抗特性的影响。
Then, we focused on the EMI problem from the power bus structure using both such EBG structures and the magnetic material coating on the power and ground planes.
旁路电容的作用是提供一条低阻抗射频接地通道，旁路电容越多，其可靠性越差。
The impedance matching application is to use the capacitors to provide the required impedance at a point in a circuit.
旁路电容的作用是提供一条低阻抗射频接地通道，旁路电容越多，其可靠性越差。
The impedance matching application is to use the capacitors to provide the required impedance at a point in a circuit.
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