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1.发明授权Arc fault detection equipment and method using low frequency harmonic current analysis 有权电弧故障检测设备及方法采用低频谐波电流分析公开(公告)号：US09025287B2
公开(公告)日：2015-05-05
申请号：US13719698
申请日：2012-12-19
Applicant: STMicroelectronics S.r.l.
Inventor： Giuseppe Privitera , Antonio Cataliotti , Valentina Cosentino , Giovanni Artale
CPC classification number: G01R31/025 , G01R31/14 , G06F17/00 , H01H9/50 , H02H1/0015
Abstract: An arc fault detection circuit includes a current sensing circuit coupled to a line conductor carrying a current. The current sensing circuit operates to sense current and output data indicative of the sensed current. A processing circuit implements a frequency transform algorithm to transform the output data to frequency data in a low frequency range and with a high spectral resolution where a minimum short time observation window is concerned. The processing circuit identifies an arc fault condition on the line conductor by identifying differences in said frequency data between at least two subsequent observation windows and identifying characteristics which exceed thresholds.
Abstract translation: 电弧故障检测电路包括耦合到承载电流的线路导体的电流感测电路。 电流感测电路用于感测指示感测电流的电流和输出数据。 处理电路实现频率变换算法，以将输出数据变换成低频范围内的频率数据，并且在具有最小短时间观测窗口的高分辨率下进行变换。 处理电路通过识别至少两个后续观察窗口之间的所述频率数据中的差异并识别超过阈值的特征来识别线路导体上的电弧故障状况。
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2.发明申请ARC FAULT DETECTION EQUIPMENT AND METHOD USING LOW FREQUENCY HARMONIC CURRENT ANALYSIS 有权ARC故障检测设备和使用低频谐波电流分析的方法公开(公告)号：US20140168843A1
公开(公告)日：2014-06-19
申请号：US13719698
申请日：2012-12-19
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Giuseppe Privitera , Antonio Cataliotti , Valentina Cosentino , Giovanni Artale
CPC classification number: G01R31/025 , G01R31/14 , G06F17/00 , H01H9/50 , H02H1/0015
Abstract: An arc fault detection circuit includes a current sensing circuit coupled to a line conductor carrying a current. The current sensing circuit operates to sense current and output data indicative of the sensed current. A processing circuit implements a frequency transform algorithm to transform the output data to frequency data in a low frequency range and with a high spectral resolution where a minimum short time observation window is concerned. The processing circuit identifies an arc fault condition on the line conductor by identifying differences in said frequency data between at least two subsequent observation windows and identifying characteristics which exceed thresholds.
Abstract translation: 电弧故障检测电路包括耦合到承载电流的线路导体的电流感测电路。 电流感测电路用于感测指示感测电流的电流和输出数据。 处理电路实现频率变换算法，以将输出数据变换成低频范围内的频率数据，并且在具有最小短时间观测窗口的高分辨率下进行变换。 处理电路通过识别至少两个后续观察窗口之间的所述频率数据中的差异并识别超过阈值的特征来识别线路导体上的电弧故障状况。
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