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fault transient
相关语句
  故障暂态
     Singularity detection of fault transient signals in power system with wavelet transform
     电力系统故障暂态信号的小波奇异性检测
短句来源
     Power spectral estimation of power system fault transient signal
     电力系统故障暂态信号的功率谱估计
短句来源
     Research on a fault phase selection algorithm based on fault transient voltage
     基于故障暂态电压的故障选相算法的研究
短句来源
     The basic theories of boundary protection Part I Fault transient analysis
     边界保护的理论基础 第一部分 故障暂态分析
短句来源
     New Technology of Fault Transient Monitoring for Small Current Neutral Grounding System
     小电流接地故障暂态监测新技术
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  “fault transient”译为未确定词的双语例句
     According to the feature that the fault transient current traveling waves is not influenced by CT's saturation,a new principle of bus protection based on traveling waves and wavelet transforms is presented.
     根据母线故障后所产生的暂态电流行波不受电流互感器饱和影响的特点 ,提出了一种基于行波和小波的母线保护新原理 ,它通过比较母线上各回进出线初始暂态电流行波的幅值和极性 ,判定故障是否发生在被保护母线上 ;
短句来源
     A NOVEL METHOD FOR FAULT LOCATION OF TRANSMISSION LINES USING FAULT TRANSIENT CURRENT TRAVELLING WAVES
     一种利用暂态电流行波的输电线路故障测距方法
短句来源
     Combined the feather of power fault transient. A wavelet optimal construction method based onminimizing the 2-norm of discrete wavelet decompositionapproximation is studied.
     针对电力故障信号为基波伴随短时暂态成分的特点,研究了基于信号离散小波逼近品质最优,即离散逼近时域二范数最大的小波基优化方法。
短句来源
     In this paper, the important point is the study about the application of wavelet analysis in single phase grounding fault location of small current grounding power systems, wavelet transform is used as a novel tool of signal analysis to obtain useful fault transient components, a new criterion of fault line selection is constructed based on the time and frequency localization character of wavelet transform.
     本论文主要研究了小波分析在小电流接地系统单相接地故障定位中的应用,利用小波变换这一新兴的信号分析工具,提取故障时的暂态电量信息,构造出了基于小波变换模极大值奇异性检测原理的新型选线判据。
短句来源
     Therefore this paper processes the fault transient components based on the wavelet transform.
     本文的选线方法就是采用小波分析方法把暂态电流信号变换到小波域再进行处理的。
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  fault transient
As a modularized design, the simulation system is composed of several modules such as fault transient calculation, startup, Fourier algorithm, phase selection, impedance computing and impedance comparison etc.
      
The improvement has been realized by means of the appropriate definition of mother wavelets inferred from fault transient waveforms.
      
The PC-PRI has been found to have reversed commutations under fault transient conditions.
      
Fault and Transient in Power Systems Fault transient behaviour of power system.
      
Extensive series of simulation studies have been performed to obtain fault transient signals.
      
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This paper analyzes the characteritics of fault transient travelling waves on a single phase transmission line. Then the characteristics of travelling waves propagation on the three-phase transmission line are studied using the method of modal analysis. A new distance protection scheme is presented. First the fault type and phases are recognized and a backward travelling wave singnal is combined. Then the fault direction and distance are determined by recognizing the characteristics of combined...

This paper analyzes the characteritics of fault transient travelling waves on a single phase transmission line. Then the characteristics of travelling waves propagation on the three-phase transmission line are studied using the method of modal analysis. A new distance protection scheme is presented. First the fault type and phases are recognized and a backward travelling wave singnal is combined. Then the fault direction and distance are determined by recognizing the characteristics of combined singnal. The proposed algorithm has been tested by numerical simulation using a electromagnetic transient program of a typical 500kV system based on improved Bergeron method. The experiment of a single phase relay protype was made, which proved the correction of proposed algorithm.

本文对输电线路故障行波特征进行了分析,提出了行波特征鉴别式距离保护的方案,并进行了计算机仿真分析和单相模型继电器的模拟试验。该方案具有超高速动作、功能完善、保护区较稳定和抗干扰能力较强等优点。

A method of ultra high speed direction relay based on fault transient energy is deseribed in this paper. The method deseribed can solve some problems associated with other direction relay based on fault transient signals. Simulation studies show that the direction to the fault is determined within the first two milliseconds following the inception of a fault.

本文提出一种以故障暂态能量为基础的超高速方向保护的基本原理。本文的方法解决了其它故障暂态量方向保护普遍存在的一些问题。仿真计算表明,该方法可以在故障发生后两毫秒内判定故障方向。

Utilities are concerned very much with post-fault transient voltage dips.Assumptions used by some energy-based criteria for voltage dip analysis arediscussed.It is proved in this paper that the maximumvoltage dip will occur at the point where the correctedpotential energy on the OMIB mapping reaches itsmaximum. The voltage dip analysis with EEAC hasbeen implemented and good results are obtained.

本文揭示了电力系统暂态电压最大跌落与暂态势能之间的联系,指出电压最大跌落发生在临界的等值二机平面上暂态势能到达最大的时刻。文中还提出了用EEAC法进行暂态电压最大跌落的分析方法。对浙江电网的仿真结果表明,利用EEAC分析首摆电压最大跌落具有快速和较为准确的优点。

 
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