This method uses the wavelet transform that has multi-resolution analysis and good time-frequency local character to pick up fault transient information, so the faulty line selection is achieved.
该方法应用具有多分辨率分析和良好时频局部化特性的小波变换提取故障暂态信息,实现故障选线。
参考来源 - 基于两相电流互感器的小电流接地系统故障选线装置研究·2,447,543篇论文数据,部分数据来源于NoteExpress
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.
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.
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