接地故障

分析了TT和TN系统的接地故障保护和保护电器及其应用条件。

The earth fault protection and protective electric devices of TT and TN system and the application conditions were analyzed .

通过分析10kV自闭贯通线路短路和接地故障特征，建立了故障检测模型，对铁路自闭贯通线路发生相间短路故障和单相接地故障进行了仿真。

The characteristic for short circuit and earth fault of 10 kV railway power transmission lines for automatic block systems was analyzed , and a fault detection model was built .

基于ARM微处理器的直流系统接地故障检测装置的设计与实现

Design and Implement of DC System Grounding Fault Detecting Device Based on ARM

石化企业低压TN系统接地故障保护

Grounding protection of low voltage TN system in petrochemical enterprise

此外，现有的FA技术不能可靠检测单相接地故障。

In addition , the existing FA does not reliably detect single phase grounding fault .

在Matlab中搭建模拟电网，分析支路电流特点以及直流电网接地故障检测中的主要问题。

Through building the DC power system model using Matlab software , to analyze the traits of branch currents , and main problems in grounding fault detection .

220kVSF6开关弧光接地故障原因分析

Analysis of the 220 kV SF_ 6 Circuit Breaker Arc Ground Fault

10kV线路接地故障检出仪的研制

A Fault Checking Instrument for 10 kV Line to Ground

如皋地区10kV配网单相接地故障分析

Analysis of Single Phase Earthing Faults in Ru-gao Area 10 kV Distribution Net

35kV变电站接地故障线路的自动查找

Automatic location for earth fault of transmission line of converting station

10kV配电线路单相接地故障的检测和预防

Prevention and Detection of Single - phase Grounding Fault for 10 kV Distribution Line

山区35kV电网单相接地故障类型判断方法一种配电网故障类型及相别的判别方法

Judgement Method on Single-phase-to-ground Fault Type of 35 kV Grids in Mountainous Area

300MW发电机汇流管接地故障分析及处理

The Analysis and Disposal of Ground Fault at the 300 MW Generator Water Cooled Bus Tube

6～10kV线路单相接地故障零序全电流选线研究

Study on line-selection of zero sequence full current for single-phase earth fault in 6 ~ 10kV lines

以组合复小波提取相TCC之间相对相位关联特征的单相接地故障保护新原理。

Another new principle of single-phase-grounded-fault protection is proposed by extracting the relative phase associated features between the phase TCC by combinatorial complex wavelet transform .

对于接地故障，先利用零、负序电流相位关系判断故障发生在A，B还是C区，每个区域对应一种单相接地故障和一种两相短路接地故障；

When a grounding fault occurs , A , B or C region is judged by the phase angle between the zero sequence and negative sequence components of the current . Each region contains a kind of single phase to ground fault and phase to phase with ground fault ;

零序电流的成功构造为实现两相TA配电网单相接地故障选线提供了基础，也提供了新思路，有利于现有选线方法的发展。

Constructing zero-sequence current successfully provides a base and some new thoughts for implementing line-selecting methods for single phase grounding fault in distribution network with 2-phase TA , which is good for the development of line-selecting methods .

多回路分析（MLA）方法应用于同步发电机定子绕组内部匝间短路、相间短路以及定子单相接地故障的分析，可以取得比较准确的仿真结果。

It is successful to apply Multi-loop Analysis ( MLA ) to the simulations of synchronous generators on stator internal faults and single-phase grounding faults .

论述在TN系统中防接地故障火灾和防间接电击的原理以及采用RCD自动切断故障回路的必要性和实用性。

The principles for protection against earth fault fire and indirect electric shock in TN system and the necessity and practicality of adopting RCD which can automatically switching off fault circuit were discussed in the paper .

对于铁路10kV自闭／贯通线路，阻抗测距原理和基于线路监控终端的定位方法尚不能可靠、准确地确定故障（特别是小电流接地故障）位置。

Currently available fault location methods based on impedance measurement for 10 kV automatic blocking and continuous railway power lines ( ABCRPLs ) are still not very reliable and accurate .

文中还设计出基于小波变换的故障类型识别的实用快速算法，该快速算法能免受TA饱和、系统振荡的影响，提高了以往行波故障选相方案在单相或两相接地故障时的可靠性。

The paper also designs the speedy wavelet-based algorithm of the fault-type identification . The algorithm is immune to CT saturation and power swing , and improves the reliability in identifying single / two-phase-to-ground faults with previously proposed phase selection schemes based on traveling waves .

采用BPA稳定分析程序对一个实际的单相接地故障进行动态仿真，研究负荷采用不同电动机模型对计算结果的影响，并与PMU录制的电压波形进行比较。

In this paper , a practical single-phase earth fault is dynamically simulated with BPA stability analysis program . The effect of different motor models to calculated results is discussed , and is compared with voltage waveforms of PMU .

并就等电位联结与漏电保护器在我国低压配电系统接地故障保护的应用中普遍存在的问题，根据IEC及发达国家标准，给出行之有效的解决方法。

To counter the ordinary problems of the application of equipotential coupling and leakage protector in grounding trouble protection of our national low voltage distribution system , the effective measures are suggested on the basis of the standards of IEC and the developed countries .

750kV输变电示范工程单相人工接地故障试验现场实测和计算分析

Analysis on Measured and Calculated Results of Artificial Single Phase Grounding Test in 750 kV Transmission Pilot Project

母线外壳防护等级达IP54，可消除外界潮气、灰尘及外物引起的接地故障。

Protection degrees of the frame up to IP54 , it cans elimination outside moisture , dust and earthing trouble because of outside objects .

当接地故障电容电流进一步增大，超过300A时，可考虑采用中性点经小电阻接地的方式运行，保证配电网的安全运行。

With the ground fault capacitance current further increasing , more than 300A , we could consider using neutral grounding via low resistance to ensure the safe operation of distribution network .

结合山东铝业公司电解铝厂两台110kV变压器的故障处理实例，分析变压器铁芯非金属接地故障，提出现场简易处理方法。

The paper analyzes the failure of non metallic groundings of transformer iron core based on the trouble shouting practice of two transformers of 110 ? kV in electrolytic aluminum plant of Shandong Aluminum Co. Ltd.

以诊断一台50MW双水内冷汽轮发电机定子绕组接地故障为例，探讨发电机定子绕组接地故障的诊断方法。

Taking the ground fault of stator winding of 50 MW dual internal water cooler turbo-generator for example , the diagnosis method for ground fault of generator stator winding is discussed .

通过FTU对采集量的计算和分析实现了单相短路和相间短路故障的判断以及故障定位、故障隔离及接地故障分析和检测等功能。

It is implemented by the FTUs ' calculating and analyzing for the sampling parameters for the diagnosis of the single phase fault and the phase to phase fault , the fault location , the fault isolation and the analysis and measurement of ground fault .

结果表明：线路正常投入串补电容器组，若永久性单相接地故障点靠近电容器组时单相自动重合闸，则串联电容器组有可能在0.35s内不能得到可靠保护；

The result shows if the series compensation capacitor bank is put into operation and the single phase recloser acts when the permanent single phase grounding fault is near the capacitor bank the series compensation capacitor bank can not be protected in 0.35s .