本文研究了输电线路接地故障时的故障选相判据。
This paper studied the transmission lines when earthing fault fault phase selection criterion.
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。
Line grounding fault is the most frequency failure for distribution network, and is also the major problem that distribution network operation is faced with.
因此，小电流接地系统线路故障的快速自动定位对于提高供电可靠性、减少停电损失具有重要的意义。
Therefore, locating fault position fastly and automatically is significant to improve the power supply reliability and reduce the outage loss.
本文针对中性点有效接地系统的送电线路的绝大部分故障类型提出了有效的检测手段。
This paper proposes effective methods to detect most kinds of faults occurred in transmission lines which are in effectively neutral grounded system.
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。
And the single phase grounding fault location for transmission line should be the emphases in power system fault detection.
介绍了我们研制的一种新型智能配电设备用于配电网中性点谐振接地系统中快速消弧并对故障线路选线。
In this paper a novel intelligent distribution equipment we developed is presented, mainly for suppressing arc in the resonant grounding distribution networks and detecting the earth fault line.
提出一种通过电场感应获取架空线路小电流接地故障零模电压信号的新方法。
A new approach using the electric field induction to measure the transient and steady-state zero-module voltage in non-solidly earthed overhead lines is presented.
在小电流接地系统中，发生单相接地故障的概率很高，因而，准确的选出故障线路，对于提高运行可靠性，具有重要的意义。
Single phase earthed fault is the common fault in this system. To select the fault line accurately is of great importance to improve the operation reliability.
本实用新型涉及一种具有寿命终止指示功能的接地故障线路断路器。
The utility model relates to a breaker for earthed faulty lines, with a function of indicating the end of service life.
提出了一种针对辐射状谐振接地系统确定单相接地故障线路及故障区域的新方法。
This paper proposes a new method for the fault line and fault area detection in radial neutral-point resonant grounded system.
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。
Detecting and locating the single phase grounding fault of power distribution system is difficult, to locate fault in the circuitry is more difficult.
根据这一特点，对小电流接地系统中线路的零序参数相频特性进行研究，得出系统发生单相接地故障时不同频带上暂态零序电流特性。
The zero-sequence angle-frequency characteristic of the lines are studied based on it and the characteristics of transient zero-sequence current in different frequency ba.
以同名相跨线接地故障为例，分析同杆并架带弱馈线路的特征及其对继电保护的影响；
The paper analyzes the character of the fault between two same lines on double-circuit transmission line and the influence on line relay.
该文提出利用线路故障产生的暂态行波实现配电架空线、电缆混合线路单相接地及相间短路故障测距，分析了故障初始行波模分量的暂态特征。
Using transient traveling waves generated by fault to locate single-phase earth fault or short circuit fault in distribution feeders mixed with overhead lines and cables is proposed.
小电流接地系统发生单相接地故障时，故障线路与健全线路在特征频段内零序电流的相位差别是接地选线判据的重要依据之一。
The phase comparison between fault feeder and healthy feeder is one of important criteria in fault line selection for neutral non-effective grounding systems.
第二种方法即有源注入的方案，该方法选出接地故障的线路，借鉴有源电力滤波的理念来实现零残流。
The other is to inject current. It selects the faulty line and realizes zero residual current based on concept of APF.
仿真结果表明此算法减小了传统方法受波速、线路长度、故障接地电阻因素的影响，提高了故障测距的精度。
The simulation results shows that it decreases the negative influence made by wave velocity, line length and faults grounding resistance factors, and also improves the accuracy of faults locations.
本论文研究题目为小电流接地系统智能型线路故障测距。
The study subject of this paper is study of An Intelligent Type Fault Location In Distribution Systems.
针对汉江汽车公司的汉江牌汽车的灯光线路，分析了接地部分引起的故障状态，从而为判断线路故障提供了可靠的理论依据。
The state of failure caused by ground cable or common retura wire has been analysed with electrical light circuit of motor vehicle made by the Hangiang Automotine company as object…
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。
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.
小电流接地系统发生单相接地故障时，对零序分量而言，非故障线路相当于空载。
The healthy line is unloaded for zero-sequence component when a single-phase fault occurs in a non-solid earthed network.
提出了一种基于线路分布参数的小电流接地系统的高精度故障模型，用于分析单相接地故障产生的暂态信号特征及进一步完善基于暂态信息的小电流接地故障选线判据。
Small Current Grounding Power System is widely used in power distribution network with middle and low voltage in china, and the single phase to ground fault takes place most frequently in such system.
中性点非有效接地配电网发生单相接地故障时，尽快选出故障线路对提高电网的供电可靠性有重要意义。
When single-phase-to-earth fault occurs on a neutral non-direct grounded power system, it is nexessary for improving the reliability of power supplying to select the faulted line quickly.
介绍了单相接地故障行波选线原理，故障线路电流初始行波幅值最大，极性与非故障线路相反。
Its principle is presented: the amplitude of initial traveling wave on faulty feeder is higher than those on other feeders and its polarity is in inverse.
因此如何准确可靠地检测并隔离故障线路，寻找精度高的接地保护方法一直是小电流接地系统的一个重要研究课题。
The problem of how to detect and isolate fault feeder correctly and reliably, and look for a protection method with high precision is always an important research task.
因此如何准确可靠地检测并隔离故障线路，寻找精度高的接地保护方法一直是小电流接地系统的一个重要研究课题。
The problem of how to detect and isolate fault feeder correctly and reliably, and look for a protection method with high precision is always an important research task.
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