In this paper, a new method for DC system grounding fault detecting is presented.
文中提出直流系统接地故障检测方法。
Therefore, it is significant for safe operation of power system to resolve grounding fault in time.
因此，及时处理接地故障，对电力系统的安全运行有着积极地意义。
This paper systematically analyses existing domestic and foreign methods for single phase grounding fault location.
本文系统地分析了国内外现有的单相接地故障定位方法。
The detection and location method of single-phase grounding fault based on fault indicator technology was introduced.
重点介绍了基于故障指示器技术的单相接地故障的检测和定位方法。
To ensure normal operation of the substation, the DC system grounding fault should be detected as quickly as possible.
为保证直流系统的正常运行，查找直流接地故障的时间应尽可能缩短。
And the single phase grounding fault location for transmission line should be the emphases in power system fault detection.
因此输电线路的单相接地故障点定位应是电力系统故障检测的一个重点。
The characteristics of transformer core multiple grounding fault are analysed, the diagnosis and treatment methods are introduced.
文章介绍变压器铁芯多点接地故障的诊断和处理方法。
The harm of single-phase grounding fault current in the medium-voltage power network has been gotten the universal solicitude of people.
中压电网中，单相接地故障电流的危害性受到了人们的普遍关注。
If single phase grounding fault is occurred, fault current is very small, so it can continue to run for 1~2 hours according to the protocol.
系统发生单相接地故障以后，因为故障电流很小，不至于影响系统的对称运行，所以按照规程可以继续运行1～2个小时。
The multi-point grounding fault of power transformer's iron-core accounts for a large proportion of all the common faults in the transformers.
论述变压器绝缘试验中温度、升压速度、极性、铁心是否接地对绝缘试验结果的影响，并分析产生这些影响的原因。
This paper introduces a device of 100% grounding fault protection for stator windings of generator by microcomputer and digital filter technique.
本文介绍了利用微机和数字滤波对发电机定子绕组进行100%接地保护的装置。
This subject matter is very meaningful to improve the detection of DC system grounding fault and to perfect the safety and reliability of DC system.
本课题的研究对于完善直流系统接地故障检测方法，提高直流系统运行的安全性、可靠性具有特定意义。
Detecting and locating the single phase grounding fault of power distribution system is difficult, to locate fault in the circuitry is more difficult.
配电线路单相接地故障的检测和定位是一个难题，要在线路上定位故障点更是困难。
The self-extinguishing of the arc caused by a single-phase grounding fault depends mainly on the amplitude of the residual current at grounding point.
可自恢复性单相接地故障点的电弧是否能自然熄灭的决定因素是接地故障残流的大小。
Line grounding fault is the most frequency failure for distribution network, and is also the major problem that distribution network operation is faced with.
线路接地故障是配电网最频发的故障，也是配网运行面临的主要问题。
By serious analysis according to Chinese rule, the conclusion and the protection measures for human safety under Single Phase Grounding Fault (SPGF) are summarized.
依据国家规程通过对试验数据的认真分析，总结了单相接地故障时，保证人身安全的结论和措施。
A case study shows that the are suppression coil with non-linear V-I characteristics will seriously affect the grounding residual current during high resistive grounding fault.
以实例分析出伏安特性非线性的消弧线圈将严重影响高阻接地时的接地残流。
The paper analyzes the method of low frequency signal injection, which is usually used to detect DC system grounding fault, and advances the method based on wavelet transforms.
分析了低频信号注入法，并且针对其缺陷提出了基于小波变换的检测方案。
An incorporate device of automatic arc-suppression coil and grounding fault line selection based on modularity structure was developed to improve its reliability and flexibility.
为提高可靠性和使用的灵活性，开发了一种模块化结构的自动消弧线圈及接地选线成套装置，给出了二者的硬件设计和接地故障子程序设计。
To solve the problem of the fault location in distribution networks, a fault location method is suggested for the single-phase grounding fault based on C-type traveling-wave theory.
为解决配电网故障定位问题，使配电网故障定位自动化，以减少巡线工作量和用户停电时间，提出了利用C型行波法对单相接地故障进行故障测距的方法。
With an example of two lines short and grounding fault, and one side of breaker of grounding fault line being cut off, the paper illustrates the principle of this calculation method.
文中以跨线并接地的横向故障和接地故障线的一侧断路器断开后的复杂故障为例阐明了该算法的原理。
A new method based on calculating approximate entropy of transient zero-module current is presented in order to locate the single phase grounding fault in non-solidly earthed network.
提出一种通过计算暂态零模电流近似熵确定小电流接地故障区段的新方法。
Then base on the former research platform, an simulation of the core saturation instability caused by three-phase grounding fault is processed, thus the new judgment method is validated.
并基于直流输电开发研究平台，对三相接地故障激发的铁心饱和不稳定现象进行了仿真研究，验证了该方法的正确性。
A faulty feeder selector based on traveling wave theory and IEC61850 standard is developed for the single-phase grounding fault of digital substation in non-solid grounding power system.
基于故障行波理论和IEC61850标准，研制了中性点非有效接地系统数字化变电站中的单相接地故障行波选线装置。
By analyzing the zero-sequence full current for single-phase grounding fault in isolated neutral distribution network, a new approach to determine the faulty transmission line is obtained.
通过对中性点不接地配电网单相接地故障时零序全电流的分析，得出了利用零序全电流的大小和方向进行故障选线的新方法。
It introduces cable grounding fault location method and analysis. It provides fast and true method for power supply enterprise to find fault point when cable is failure that is not easy to find.
介绍了电缆接地故障定位与分析，解决了电缆发生故障不易查找故障点的问题，为生产及供电企业快速准地查找故障点提供了可以借鉴的方法。
When grounding fault happens at the time when current is zero, the transient value is too small, in order to prevent it, the paper brings forward the current increment method to select faulty line.
为防止在电流过零点附近发生的接地故障时的暂态量太小，论文提出利用电流增量进行故障选线。
Based on clustering FSVM and current injection method, a new method using two steps for single-phase grounding fault location of distribution feeders in networks with ungrounded neutral is proposed.
提出小电流接地系统实现单相接地故障定位的新方法。该方法应用基于聚类的FSVM和电流注入法分两步实现故障定位。
With expanding constantly on MV network, the current of the one-phase grounding increases constantly too, when one-phase grounding fault happens, there are more accidents in the lines and substations.
中压电网不断扩大的同时，系统的单相接地电流也快速增加，发生故障时送电线路和变电站事故较多。
New principle for feeder grounding fault protection based on zero sequence admittance is presented in this paper. Criterions for the line ground relay with zero sequence admittance are also discussed.
提出了采用测量线路零序导纳进行接地保护的新原理，讨论了直线式导纳继电器的接地保护判据。
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