提出了基于故障分量正序电抗的方向元件。
A new directional element based on the fault component positive sequence reactance (FCPSR) is presented.
提出了适用于发展性故障的故障分量提取算法。
An extraction approach of fault superimposed components in an evolved fault is proposed.
近年来，基于故障分量的保护得到了广泛的应用。
In recent years, protection relaying based on fault component is used widely.
本文论述了基于故障分量能量函数的超高速方向保护原理。
An Ultra High Speed Relay based on the energy function of the fault component is discussed in this paper.
为与故障分量有所区别，文中将这种分量称为故障变化量。
In order to obtain the long-term fault variation component, calculation of the pre-fault and post-fault variation is proposed.
本文将基于故障分量的继电保护原理用于单相接地故障定位。
This paper introduces principles of relay protection based on the fault component and applies these to the fault location.
应用瞬时值对称分量变换，可提取电压、电流故障分量的正序空间向量。
The transformation of the instantaneous value symmetry component applied, the positive sequence space vector of fault component of the voltage and current can be derived.
该方案包括了横差保护、故障分量负序功率方向保护和不完全纵差保护的综合应用。
The scheme includes the transverse differential protection, the directional relay action on negative sequence power of fault component and the incomplete differential protection.
全面对比分析了全电流比例差动判据和故障分量电流比例差动判据的灵敏性和安全性。
The sensitivity and the security of the percentage differential criteria using phase current and superimposed phase current are studied comparatively.
在典型的六相输电系统中，半正序、半零序和半负序故障分量不受系统阻抗变化的影响。
In typical six-phase transmission system, half positive sequence, half zero sequence and half negative sequence fault components are independent of the variance of system impedance.
通过与传统差动保护的比较，说明采用故障分量作为制动量的差动保护所具备的优越性。
Compared with traditional differential protection based on all components, differential protection based on the fault component has its advantage.
发生发展性故障后，利用保护安装处的全电流减去求得的支路电流得到发展性故障后的故障分量电流。
After an evolved fault occurred, the fault superimposed components can be calculated through subtracting the solved load currents from the currents at the measuring point.
基于对异相短路的分析，发现两相电流故障分量波形呈现反向对称性，可利用相关分析法快速提取此特征。
The waveforms of the current fault component of two phases are symmetrical according to an analysis of wrong-phase-coupling. This characteristic can be quickly extracted by correlation analysis.
文中提出一种新型的、高精度的故障分量——综合负序矢量的概念 ，并给出综合三相负序分量的实时算法。
The concept of a new- style and high- precision fault component, synthetic negative sequence vector SNSV is proposed in the paper.
仿真结果表明，对于两端供电超高压长线，带电容补偿的故障分量相量差动保护具有明显地高灵敏度和选择性；
The result of simulation indicates that fault componentdifferential protection with capacitive current compensation has high sensitivity and good selectivity on al…
为此以发变组差动保护为例对故障分量差动保护在WYB 0 1型保护中的应用进行分析，以求引起更多的关注和讨论。
But now there are some different opinions about its differential protection based on fault component. So this paper gives some discussions on it.
论文根据上述分析设计了基于故障分量采样值差动保护、故障分量相量差动保护、常规电流差动保护和零序电流差动保护自适应的保护方案。
The setting schemes of the resistance coefficient and the least trip differential current for the current differential protection based on sampled values using fault component are discussed.
通过对该方法的研究，揭示了目前常用的基于故障分量的距离继电器的通用表达式与动作特性，对比了这几类距离继电器在可靠性与灵敏性上的差异。
By the research, the paper explains the essence and the character of several types of common-used fault-component based distance relay, compares their difference in the reliability and sensitivity.
通过对调制信号作谱分析，以其频谱中是否存在某种故障的特征频率分量来诊断有无该种故障。
The fault is diagnosed by extracting the fault feature component from the frequency spectrum of the modulated signal.
通过数字模拟实验与齿轮箱故障信号检测，验证了新的双线性时间-频率分布对复杂信号中瞬时分量的探测效果。
By digital simulation and detection of gearbox fault signal the detection effect of the novel bilinear time-frequency transform is validated for the transient components in complex signal.
研究了利用相分量计算电力系统不对称故障的方法，说明了该方法的实用价值。
The calculation for asymmetrical failures in electric power systems using phase components is studied with its applicability discussed.
通过预处理滤除工频周期分量，消除了小波变换在信号峰值处的模极大值，从而避免了对故障的误判。
As wavelet module maxima occur at peaks of signal, the pretreatment removes power frequency periodic components from electric signal and thus avoids misjudgments of fault.
对称分量法及其序网联接技术是电力系统故障处理的传统方法。
Symmetrical components method and its sequence network connection technique are conventional way on fault analysis of power system.
使用矩阵运算代替对称分量法的传统序网故障变换，以实现不对称短路故障计算，并给出常见故障对应的参数矩阵。
Calculation formulas are proposed with matrices calculation to deal with unsymmetrical faults and parameter matrices for various faults are listed.
基于高压输电线路的分布参数模型，使用线路两端电压、电流的正序和负序分量，对高压输电线路两点异相故障提出了一种新的测距算法。
Based on the distributed parameter model for transmission line, a new fault location method for short circuit fault of two points on different phases of the power transmission line is presented.
在此基础上，将上述推得的结论及方程式用于故障定位计算，推出了各线模、地模分量所对应的定位计算公式。
Then, the results and equations are used on fault location, and correspondent computating formulae for each line-mode and ground-mode quantum are yielded.
通过提取各种故障情况下电动机电流序分量的特点，在保护单元内为电动机提供简单完全的保护；
The simple complete protection for a motor in the protection units is described based on characters of motor's sequence currents in case of different faults.
基于二端口网络理论，采用等值双端电源相分量法进行跨线短路故障计算。
An equivalent two source phase domain method for calculating interline fault in the double circuit line is presented.
当交流系统发生三相不对称故障时，忽略直流系统负序分量的准稳态模型将给交直流混合系统的仿真带来较大的误差。
The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when unbalanced fault occurs in AC system.
当交流系统发生三相不对称故障时，忽略直流系统负序分量的准稳态模型将给交直流混合系统的仿真带来较大的误差。
The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when unbalanced fault occurs in AC system.
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