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。
The method deseribed can solve some problems associated with other direction relay based on fault transient signals.
然而，目前对直流线路故障暂态特性仍缺乏系统、深入的理论研究。
But there are few theories and methods for the analysis of the transient characteristics of DC line fault.
并联电抗器可以降低线路的稳态电容电流，但对故障暂态电容电流的作用不明显。
Shunt reactors can reduce the steady capacitive current but have unobvious effect on fault transient current.
应用该方法对电力系统故障暂态信号进行消噪处理，从而更有利于故障的检测与识别。
This method can be applied to de-noising for transient signals of power system faults, making the faults easily identified.
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.
用SIMULINK建立起同步发电机模型，并将其与PS B模块联合使用，能方便灵活地建立起发电机故障暂态模型。
A system model can be established easily using aircraft synchronous generator model built by SIMULINK together with PSB.
提出并研制了一种新型电力系统暂态故障模拟再现系统。
A new transient fault simulating reappearing system is proposed and developed.
本文讨论了小波变换及小波变换的奇异性检测理论，并将其应用于暂态行波故障特征的分析。
The paper discuss the singularity detection theory of wavelet transform, this theory is applied to analysis of fault characteristics of the transient traveling waves.
暂态电压跌落限制可以考虑为对故障后电力系统的一个约束。
The restriction of transient voltage dip is a constraint on post fault power system.
变压器外部故障切除后，暂态磁通可能超过变压器铁心的饱和点，从而产生一定的恢复性涌流。
After an external fault of transformer is cleared, the transient flux may enter into the saturation region, and a recovery inrush may be produced.
将提取的暂态零序电流故障特征作为条件属性，信号增强倍数作为决策属性，构成一个决策系统。
The extracted fault characteristics of transient zero sequence current is looked as condition attributes and the multiple of signal enhancement is.
故障录波装置作为电力系统暂态过程的记录设备，电力系统对其要求也越来越高。
The breakdown records device, as the recording equipment of electrical power system transition process, electrical power system is also more and more high to its request.
试验包括故障和系统的暂态稳定控制。
The study includes fault applying and transient stability controlling.
研究联络线故障水平对电力系统暂态稳定性的影响，对于电力系统的安全稳定评估与校核，以及暂态稳定预防控制都有着重要意义。
The research on the fault level of tie line is of significance for the security and stability evaluation of power system as well as the preventive control of transient stability.
应用在时频空间皆具有良好聚焦特性的小波包，以适当频率带宽，对故障后暂态电气量进行分解。
Wavelet packets with the advantage of time frequency zoom is used in this paper to decompose the post fault transient electrical quantities by the proper frequency span.
提出一种基于暂态能量的故障选线自适应方法，利用所有健全线路暂态能量与故障线路暂态能量之差为最小值的原理，构成故障选线算法。
This paper presents an adaptive fault circuit selection method based on the principle that the difference of transient energy of normal circuits and that of fault circuit is.
而对内部故障的暂态计算，饱和因素的影响更严重，因为在内部故障的过渡过程中饱和程度也会随时间而变化。
With regard to the transient calculation of internal faults, the effect of saturation is more serious since the degree of saturation is changed during the fault.
在行波故障测距中，传统的数据采集系统无法适应采集高速变化的暂态电压、电流行波的要求，难以实现故障的精确定位。
In traveling-wave fault locating, the traditional data acquisition system can not record the fast-changed traveling waves of voltage and current for accurate fault locating.
提出了一种考虑暂态电压跌落限制的直接法，快速求取保证故障后电力系统电压高于限值的故障临界清除时间(CCT)。
A direct method considering transient voltage dip is proposed to calculate the critical clearing time (CCT) ensuring that voltages of post fault power system are higher than limit.
高压输电线路发生故障后的暂态电压或电流分量中包含比工频分量更多的故障信息，充分利用这一信息是构成具有绝对选择性单端无通信保护的前提。
Moreover, it is the basis of constructing a new non communication protection through absolutely utilizing the fault information which is comprised in transient component of fault current or voltage.
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.
文中对多代理技术目前在电力系统暂态稳定分析与控制、倒闸计划和故障诊断等方面的应用做了概要介绍。
In this paper, an introduction of its applications in power system transient stability analysis and control, planning of switching operation, and disturbance diagnosis is presented.
本文针对中压电网中经常发生的单相接地故障，介绍了基于暂态能量判据对故障支路的选线方法。
Focusing on single phase earth faults which frequently happen in medium voltage networks, this paper presents a faulty feeder selection system based on the transient energy criteria.
特点是采用曲线拟合的方式，根据上述轨迹的曲线形状，可以快速算得发电机在故障后的暂态稳定指标。
According to the curve shape above mentioned trajectory the transient stability index of generator after accident occurred can be quickly calculated.
利用故障录波信息重演负荷特性的暂态过程，通过实测曲线和负荷模型仿真曲线的比较，进行负荷动特性模型的校验。
Utilizing the recorded fault data to replay the transient process, the dynamic load model could be verified by the comparison between measured curves and simulation ones.
因而用该算法可以非常容易地计算在高压远距离输电线短路故障的暂态短路电流。
With this algorithm the transient short circuit current of HV distant transmission line can be easily calculated.
其次，通过对发生单重和多重故障时的暂态稳定计算，研究了作为多回直流受端系统的广东电网在发生直流双极闭锁故障时的运行稳定性问题。
Second, by means of the transient stability calculation for single and multiple faults, the stability of Guangdong power grid as a multiinfeed AC/DC power system is studied.
从第四章开始主要研究具有可控串联补偿功能的故障限流器(FCL)对改善电力系统暂态稳定性的影响。
Begin with chapter 4, the influence of Fault Current Limiter (FCL) with controllable series compensation on improving transient stability of power systems is described.
从第四章开始主要研究具有可控串联补偿功能的故障限流器(FCL)对改善电力系统暂态稳定性的影响。
Begin with chapter 4, the influence of Fault Current Limiter (FCL) with controllable series compensation on improving transient stability of power systems is described.
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