This paper studied the transmission lines when earthing fault fault phase selection criterion.
本文研究了输电线路接地故障时的故障选相判据。
Currently used fault phase selector components are compared and their characteristics and shortcomings are pointed out.
对目前实用的突变量及稳态量选相元件进行了比较，指出了其特点和存在的不足。
A novel fault phase selector by fault component of compensation voltage based on traveling wave is presented for high-speed protection.
针对传统电流突变量和电压突变量选相元件不能同时满足强弱电源系统侧保护要求的缺点，提出一种新的突变量选相原理。
The fault phase selector discussed is based on the result that the fault component of sound phases is zero when a single-phase-to-ground fault occurs.
文中所探讨的相电流突变量选相元件，是利用单相接地故障时，两健全相相间电流突变量为零这一特征来得到的。
The fault phase selectors, including the phase current difference suddenly-change and the sequence current, may misoperate in some cross country faults and conversion faults.
研究表明相电流差突变量、稳态电流序分量等选相元件在发生某些跨线及转换性故障时会误选相。
Along with the continuous development of power system network and the continuous enhancement of voltage grade, the request is enhanced correspondingly to the fault phase selector.
随着电力系统网络规模的不断扩大和电压等级的不断提高，对故障选相装置的要求也不断提高。
In a drive system of power transistor inverter-motor, not only can it be used in fine control of motor current waveform, phase, amplitude and frequency, but can also be used to sense, fault current.
在大功率晶体管逆变器——电动机驱动系统中，它不但可用来对电动机电流的波形、相位、幅值和频率进行精细控制，而且能快速地检测出故障电流。
Because complex wavelet transforms can exactly identify amplitude and phase information in signal to be dealt with, they are suitable for detection of fault signals in power system.
复值小波变换能准确分辨出信号中所包含的幅值信息和相位信息，因而，适用于电力系统的故障信号的检测。
The paper analyzes the rated case and fault cases of a 11 phase brushless exciter by general simulation model of exciter, which is based on Kron's tensor circuit.
本文应用张量电网络理论所建立的无刷励磁机通用仿真模型，对11相无刷励磁机进行了额定工况及故障工况的仿真研究。
Can reliably determine, within the community and bounds detection ma level and zero-sequence current phase short circuit fault current, automatic removal of single-phase ground fault and phase fault.
能可靠判断、检测界内与界外毫安级零序电流及相间短路故障电流，实现自动切除单相接地故障和相间短路故障。
An equivalent two source phase domain method for calculating interline fault in the double circuit line is presented.
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。
Moreover, through analyzing the information of bispectrum phase, the fault cylinder position can be pointed out in misfire fault.
进一步分析双谱相位信息，可以确定单缸断油时的故障缸位置。
The paper analyses the software fault that occurred in NEAX61E exchanges and meaning of PHASE information. It gives a method to collect and analyse software fault data through example.
分析了NEAX61E程控交换机软件故障的分类及PHASE信息的含义，通过实例介绍了在软件发生故障后有关数据收集与分析的方法。
Based on the analysis of main fault types of LV (Low Voltage) flameproof motor, the negative sequence protection principle is proposed for its asymmetric short circuit fault and open phase fault.
通过分析低压隔爆电动机的主要故障类型，针对不对称性短路故障和断相故障提出了采用负序保护原理进行保护的方案。
Type of fault, phase sequence, value of faulty current and breaking action time will be indicated on the intelligent controller promptly if breaker turns off because of faults.
断路器遇故障分断后，智能控制器能显示出故障类别、故障相序及故障电流值、分断动作时间值。
The analysis shows that the measured impedance at the head of the line is not proportional to the fault distance when a three-phase fault occurs at the end of the line.
分析表明，线路末端三相故障时，线路首端的测量阻抗不与故障距离成正比。
When a fault occurs on one phase of a 3-phase, 4-wire system, the other two phases rise in voltage relative to ground (about 20%).
当故障发生在3相4线系统中的一相时，其它两相的对地电压就升高（约升高20%）。 好评（0）
And the single phase grounding fault location for transmission line should be the emphases in power system fault detection.
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。
The detection and location method of single-phase grounding fault based on fault indicator technology was introduced.
重点介绍了基于故障指示器技术的单相接地故障的检测和定位方法。
This paper presents that the protection for the phase to phase fault should be composed of high frequency teleprotection channel and overreached distance relay.
提出只有将高频通道、超范围距离元件配合构成允许式纵联距离保护，才能保护同杆双回线跨线不接地故障。
Stator phase failure is one typical fault of a three-phase induction motor.
缺相故障是三相感应电动机的典型故障之一。
The formulae for SMIS are derived and verified by case simulation, the solution of critical clearing time (CCT) of three-phase short fault in MMS is theoretically discussed.
对单机无穷大母线系统进行了公式推导和仿真验证，从理论上探讨了多机系统的三相短路故障临界切除时间求解方法。
This paper systematically analyses existing domestic and foreign methods for single phase grounding fault location.
本文系统地分析了国内外现有的单相接地故障定位方法。
Electrical products which have LCD time counter, Layer sensor, Three-phase AC fault protection relay and so on.
其中电器类产品有液晶显示计时计数器、平层感应器、断相错相三相交流保护继电器等等。
Detecting and locating the single phase grounding fault of power distribution system is difficult, to locate fault in the circuitry is more difficult.
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。
Through cooperating each other between the generator stator ground protection, it can operate sensitively when single phase ground fault in whole range of generator stator winding occurs.
通过发电机定子接地保护之间的相互配合，在整个发电机定子绕组范围内发生单相接地故障时，发电机定子接地保护均能灵敏地动作。
Four-phase transmission system fault analysis is one of the important studies on four-phase transmission system theory.
四相输电系统的故障分析，是研究四相输电理论的一项重要内容。
A novel method of identifying permanent fault for single-phase adaptive reclosure in transmission lines with shunt reactors is proposed.
针对带并联电抗器的超高压输电线路，提出一种单相自适应重合闸永久性故障识别的新方法。
A novel method of identifying permanent fault for single-phase adaptive reclosure in transmission lines with shunt reactors is proposed.
针对带并联电抗器的超高压输电线路，提出一种单相自适应重合闸永久性故障识别的新方法。
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