接着应用电流注入法对故障线路进行定位。
Then the fault location of line is completed by using current injection method.
通过其与一阈值的比较可以找到故障线路。
The fault line can be found by comparison that ratio of entropy with a threshold.
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.
如何准确地检测出故障线路一直是电力系统继电保护的重要研究课题。
How to detect the fault line quickly and accurately is an important issue in electric power system protective relaying.
超导故障限流器可以在限流的同时实现控制非故障线路电压跌落的目的。
The superconducting fault current limiter (SFCL) can limit current and realize to control the voltage dip in non-faulted line.
当电力系统发生故障时，系统中的保护装置动作，将故障线路或元件切除。
When a fault occurs in power system, the relevant relay will operate and send out trip order to clear the faulted transmission line or other parts.
同时根据串联电抗器对系统稳定性影响的特点，筛选故障线路，以减少计算量。
The faulty lines are selected according to the characteristics of series reactors to reduce the computational load.
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.
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.
由于铁路配电负荷的重要性，快速查找出故障线路对系统的安全运行具有重要意义。
For the importance of the railway distribution load, it is essential to seek the fault line rapidly.
经实验室试验证明该系统在单相故障状态下能准确可靠地检测出故障线路并驱动跳闸。
The lab experiments showed that under the single phase fault status, the system could be accurate and reliable to detect the fault line and to drive the trip.
比较故障线路和正常线路波形，使两波形相减，利用波形差第一个畸变点来确定故障距离。
Contrasting the waves reflected from the fault line and the normal one, and subtracting this two waveforms, then the fault distance is determined by finding the first distortion point.
理论分析及EMTP仿真表明，这种测距原理不受来自故障线路对端不连续点反射波的影响。
The theory analysis and EMTP simulation show that the presented method is independent on the reflected waves coming from the remote discontinuity on the faulty transmission Line.
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.
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.
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.
基于行波的输电线路双端测距算法只用到到达故障线路两侧母线的第一个故障初始行波波头，其可靠性较高。
Based on the traveling wave, double ended approach only deals with the first transient traveling wave reaching the two buses of the fault line.
当线路发生故障需切阳城电厂机组时，由故障线路的安全自动装置加以判别，并借助通道发送远方切机信号。
When line fault happens, the security automatic equipment on the faulty section can judge it and send a remote cut-off signal to the uni…
当线路发生故障需切阳城电厂机组时，由故障线路的安全自动装置加以判别，并借助通道发送远方切机信号。
When line fault happens, the security automatic equipment on the faulty section can judge it and send a remote cut-off signal to the unit in...
当线路发生故障需切阳城电厂机组时，由故障线路的安全自动装置加以判别，并借助通道发送远方切机信号。
When line fault happens, the security automatic equipment on the faulty section can judge it and send a remote cut-off signal to the unit in Yangcheng …
采用STD总线和模块式结构，以时序鉴别法选线技术，准确定位故障线路，并发出语音报警、灯光及数字显示。
The paper adopts STD bus and modular structure and uses sequence identification wire selection technique to correctly locate the fault lines and indicate with language alarm, light and digitals.
应用d - S证据理论对单次故障度进行有效融合，计算出连续故障度，连续故障度最大的线路就是故障线路。
It fuses single fault degree by D-S evidence theory and calculates continuous fault degree. The line of maximum degree is the fault line.
该方法利用小波变换分析所采集的故障暂态信号，提取用于选线的暂态信息，并采用综合相位比较法确定故障线路。
In this method the transient fault signals are analyzed with wavelets transform to obtain the transient fault information, and the fault circuit is selected by the synthetic phase comparison method.
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.
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.
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.
该方法不仅能够确定一级变电站的故障线路，而且能够在一级变电站与二级变电站(或开闭站)之间的辐射状线路上确定故障区域。
This method can detect not only faults in primary substation, but also fault area in radial line between the primary substation and the secondary one (or switching station).
为了扩大故障线路与正常线路的差别，对特征频带内各子频带的频带熵作积处理，得到了复小波包特征频带复合熵线路特征量化准则。
In order to enlarge the difference of fault line and normal line, the complex wavelet pocket band entropy of all sub-frequency bands in feature band is made product.
为了扩大故障线路与正常线路的差别，对特征频带内各子频带的频带熵作积处理，得到了复小波包特征频带复合熵线路特征量化准则。
In order to enlarge the difference of fault line and normal line, the complex wavelet pocket band entropy of all sub-frequency bands in feature band is made product.
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