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Based on wavelet transform and multiresolution analysis, a new method to distinguish transformer inrush current from its internal fault current is proposed. 提出一种基于小波变换和多分辨分析识别变压器励磁涌流和内部故障电流的新方法。
The waveform characteristics of transformer magnetizing inrush and internal fault current are analyzed and a method to identify magnetizing inrush is presented. 分析变压器励磁涌流和内部故障电流的波形特征,提出励磁涌流识别的新方法。
A new method, based on the analysis of frequency spectrum of instantaneous power, for the discrimination between internal fault currents and inrush currents in transformer is proposed. 在分析瞬时功率频谱特性的基础上,提出了一种基于瞬时功率的变压器励磁涌流和内部故障电流识别新方法。
In power transformer the main concern lies in the accurate and rapid discriminate between magnetizing inrush and internal faults currents. 电力变压器的励磁涌流识别一直是变压器保护的一个重要问题。
A new approach to the discrimination between inrush-current and internal fault current of transformers 电力变压器励磁涌流和内部故障识别新方法
internal fault current 内部故障电流
The calculation result shows that this method is able to detect transformer internal fault and magnetizing inrush current correctly. 计算结果表明该方法能可靠识别内部故障和励磁涌流，效果明显。
How to discriminate between internal fault and magnetizing inrush current is the difficulty of transformer protection when apply differential relay. 变压器主保护选择差动在原理上存在不足，带来的问题就是如何准确鉴别励磁涌流与内部故障，这也是目前变压器保护的难点。
Digital simulation shows that the proposed method can distinguish internal fault from external fault, magnetizing inrush current, normal operation. 经仿真计算验证，该方法能有效地区分内部故障和励磁涌流、外部故障及正常运行状态。
According to the direct current component of the generalized instantaneous power flowing into the two-terminal network, magnetizing inrush and internal fault can be distinguished. 根据输入端口的广义瞬时功率直流分量的大小，来区分励磁涌流和内部故障电流。
A type for AC fault currents and pulsating DC fault currents. 用于交流和直流脉动故障电流。
SHJ-IV fault indicator installed on the wire, used to direct the flow of fault current devices. IV故障指示器安装在电线上，用于指示故障电流流通的装置。
By reason of its high reliability, the resonant-type fault current limiter is suitable for EHV power network. 谐振型限流器具有高可靠性等优点，适用于超高压电网。
Abstract：A control system of the initial fault current angle in shortcircuit test is proposed. 摘要：介绍了一种用于短路试验的合闸角控制系统设计方案。
When internal fault occurs in the stator windings of synchronous generator,there are strong harmonics in the air gap. 同步电机定子绕组发生内部电气故障时,气隙磁场中存在很强的空间谐波分量。
When connecting sources to switching cards, install protective devices to limit fault current and voltage to the card. 在将信号源连接至开关卡时，请安装保护装置，限制传输至开关卡的故障电流和电压。
In this paper, SSMES with fault current limiting function for substation applications is proposed. 文中研究了应用于变电站的具有故障限流功能的SSMES。
With the data generated by this internal fault simulation model, the protection scheme used for powerformer can be validated and improved accordingly. 利用该模型可以对高压发电机的保护方案进行有效的验证或者作相应的改进。
As the asymmetry a nd a shorted loop of stator winding are caused by a internal fault,the conventio nal transformation can not directly be used. 定子绕组发生故障后，绕组对称性遭到破坏，传统的变换方法难以应用；若按各支路列写方程，则方程维数过高，而且收敛也比较困难。
For the distributed capacitance of the network is the main cause of the fault current, it can be compensated and reduced by installing arc suppression coil(ASC). 电网对地分布电容的存在是接地点产生故障电流的主要原因，在电网的中性点与大地之间加装消弧线圈，可使容性电流得到补偿，从而使接地点的电流减小。