公开(公告)号：US20090171603A1

公开(公告)日：2009-07-02

申请号：US11965885

申请日：2007-12-28

申请人： Sriram Changali ,  Vljaysai Prasad ,  Cecil Rivers, JR. ,  Pradeep Vijayan

发明人： Sriram Changali ,  Vljaysai Prasad ,  Cecil Rivers, JR. ,  Pradeep Vijayan

IPC分类号： G06F19/00

CPC分类号： G01R31/1227 ,  G01R31/025 ,  H02H1/0015 ,  H02H1/0092

摘要： A method of detecting a series arc fault in an alternating current electrical signal is provided. A method for detecting a series arc fault in an alternating current electrical signal, comprising: a) calculating discrete wavelet coefficients using a current signal as an input for the discrete wavelet coefficient calculations, and outputting discrete wavelet coefficient filtered output; b) subsampling the discrete wavelet coefficient filtered output and outputting a subsampled output; c) calculating critical variables from the subsampled output; d) determining from the critical variables whether a series arc fault is present in the current signal; and e) outputting an signal indicating that a series arc fault is present in the current signal, if substantially all of the critical variables meet a predetermined criteria.

摘要翻译： 提供了一种在交流电信号中检测串联电弧故障的方法。 一种用于检测交流电信号中的串联电弧故障的方法，包括：a）使用当前信号作为离散小波系数计算的输入来计算离散小波系数，并输出离散小波系数滤波输出; b）对离散小波系数滤波输出进行子采样并输出子采样输出; c）从子采样输出计算关键变量; d）从关键变量确定电流信号中是否存在串联电弧故障; 以及e）如果基本上所有关键变量满足预定标准，则输出指示当前信号中存在串联电弧故障的信号。