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公开(公告)号：US20060050450A1
公开(公告)日：2006-03-09
申请号：US10937487
申请日：2004-09-09
申请人： Christian Pellon , Mark Rabiner , Michael Parker , Christopher Nicolls , Keith Kawate , Robert Zanelli , Roger Mayer , Lucien Fontaine , Michael Lavado , Lynwald Edmunds , Jeffrey Ting
发明人： Christian Pellon , Mark Rabiner , Michael Parker , Christopher Nicolls , Keith Kawate , Robert Zanelli , Roger Mayer , Lucien Fontaine , Michael Lavado , Lynwald Edmunds , Jeffrey Ting
IPC分类号： H02H3/00
CPC分类号： H02H1/0015 , H02H1/0092
摘要： An apparatus and method for detecting arc faults that have reduced susceptibility to nuisance tripping. The apparatus includes a current sensor, an input sense circuit, an arcing sense circuit, a power supply, a tripping (firing) circuit, a processor, and an electromechanical interface. The current sensor monitors a power input comprising an AC current, and provides high frequency components of the. AC current to the input sense circuit. The input sense circuit filters and rectifies the AC signal, and provides the rectified signal to the arcing sense circuit. The arcing sense circuit provides a voltage level accumulated over a predetermined time period, and digital signals indicative of possible electrical arcing occurring during the sampling period, to the processor. The processor measures the voltage level, stores information relating to measured voltages and the digital signals, and processes the stored information using one or more algorithms, thereby determining whether the signals resulted from an arc fault or a nuisance load. In the event the signals resulted from an arc fault, the processor activates the firing circuit to trip the electromechanical interface, thereby interrupting the power output to the load.
摘要翻译： 用于检测电弧故障的装置和方法，其具有降低的对故障跳闸的敏感性。 该装置包括电流传感器，输入检测电路，电弧感测电路，电源，跳闸（点火）电路，处理器和机电接口。 电流传感器监测包括AC电流的功率输入，并提供高频分量。 交流电流到输入检测电路。 输入检测电路对AC信号进行滤波和整流，并将整流后的信号提供给电弧感测电路。 电弧感测电路提供在预定时间段内累积的电压电平，以及指示在采样周期期间发生的可能的电弧放电的数字信号到处理器。 处理器测量电压电平，存储与测量电压和数字信号有关的信息，并使用一种或多种算法对存储的信息进行处理，从而确定信号是由电弧故障还是由妨扰负载引起的。 在信号由于电弧故障引起的情况下，处理器激活点火电路以使机电接口跳闸，从而中断输出到负载的功率。
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公开(公告)号：US20060050447A1
公开(公告)日：2006-03-09
申请号：US10937486
申请日：2004-09-09
申请人： Christian Pellon , Mark Rabiner , Michael Parker , Christopher Nicolls , Keith Kawate , Robert Zanelli , Roger Mayer , Lucien Fontaine , Michael Lavado , Lynwald Edmunds , Jeffrey Ting
发明人： Christian Pellon , Mark Rabiner , Michael Parker , Christopher Nicolls , Keith Kawate , Robert Zanelli , Roger Mayer , Lucien Fontaine , Michael Lavado , Lynwald Edmunds , Jeffrey Ting
IPC分类号： H02H3/00
CPC分类号： H02H1/0015 , H02H1/04
摘要： An apparatus and method for detecting arc faults that have reduced susceptibility to nuisance tripping. The apparatus includes a current sensor, an input sense circuit, an arcing sense circuit, a power supply, a tripping (firing) circuit, a processor, and an electromechanical interface. The current sensor monitors a power input comprising an AC current, and provides high frequency components of the AC current to the input sense circuit. The input sense circuit filters and rectifies the AC signal, and provides the rectified signal to the arcing sense circuit. The arcing sense circuit provides a voltage level accumulated over a predetermined time period, and digital signals indicative of possible electrical arcing occurring during the sampling period, to the processor. The processor measures the voltage level, stores information relating to measured voltages and the digital signals, and processes the stored information using one or more algorithms, thereby determining whether the signals resulted from an arc fault or a nuisance load. In the event the signals resulted from an arc fault, the processor activates the firing circuit to trip the electromechanical interface, thereby interrupting the power output to the load.
摘要翻译： 用于检测电弧故障的装置和方法，其具有降低的对故障跳闸的敏感性。 该装置包括电流传感器，输入检测电路，电弧感测电路，电源，跳闸（点火）电路，处理器和机电接口。 电流传感器监视包括AC电流的功率输入，并且将AC电流的高频分量提供给输入检测电路。 输入检测电路对AC信号进行滤波和整流，并将整流后的信号提供给电弧感测电路。 电弧感测电路提供在预定时间段内累积的电压电平，以及指示在采样周期期间发生的可能的电弧放电的数字信号到处理器。 处理器测量电压电平，存储与测量电压和数字信号有关的信息，并使用一种或多种算法对存储的信息进行处理，从而确定信号是由电弧故障还是由妨扰负载引起的。 在信号由于电弧故障引起的情况下，处理器激活点火电路以使机电接口跳闸，从而中断输出到负载的功率。
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公开(公告)号：US20070058304A1
公开(公告)日：2007-03-15
申请号：US11225585
申请日：2005-09-13
IPC分类号： H02H3/00
CPC分类号： H02H1/0015 , H02H1/04 , H02H3/44
摘要： An apparatus and a method of detecting arc faults that have reduced susceptibility to nuisance tripping. The apparatus includes a current sensor, a differential current input sense circuit, a differential current (di/dt) characteristics sense circuit, an absolute current input sense circuit, an absolute current characteristics sense circuit, a power supply, a tripping circuit, a processing unit, and an electromechanical interface. The di/dt characteristics sense circuit provides information relating to the characteristic di/dt signature of a power line current. The absolute current characteristics sense circuit provides information relating to the absolute current waveform characteristics of the power line current. The processing unit correlates the di/dt characteristics to the absolute current characteristics to distinguish between electrical arc faults and nuisance loads, thereby reducing the susceptibility of the apparatus to nuisance tripping.
摘要翻译： 一种检测电弧故障的装置和方法，其具有降低的对故障跳闸的敏感性。 该装置包括电流传感器，差分电流输入检测电路，差分电流（di / dt）特性检测电路，绝对电流输入检测电路，绝对电流特性检测电路，电源，跳闸电路，处理 单元和机电接口。 di / dt特性检测电路提供与电力线电流的特征di / dt特征相关的信息。 绝对电流特性检测电路提供与电力线电流的绝对电流波形特性有关的信息。 处理单元将di / dt特性与绝对电流特性相关联，以区分电弧故障和噪声负载，从而降低设备对故障跳闸的敏感性。
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公开(公告)号：US20070153436A1
公开(公告)日：2007-07-05
申请号：US11320865
申请日：2005-12-29
IPC分类号： H02H3/00
CPC分类号： H02H1/0015 , G01R31/1272 , H02H3/38 , H02H3/44
摘要： Low cost apparatus and methods of detecting arc faults for better discriminating electrical events. The arc fault detection apparatus includes a current sensor, a di/dt input sense circuit, a dv/dt input sense circuit, and a processing unit. The current sensor monitors a power line current, and provides high frequency components of the power line current to the di/dt input sense circuit. The dv/dt input sense circuit monitors a power line voltage. The di/dt and dv/dt input sense circuits generate signals carrying information relating to changes in the power line current and the power line voltage, respectively. The processing unit analyzes these changes in the power line current and the power line voltage to discriminate detected electrical arcing events from nuisance loads with increased accuracy.
摘要翻译： 低成本的检测电弧故障的设备和方法，以更好地识别电气事件。 电弧故障检测装置包括电流传感器，di / dt输入检测电路，dv / dt输入检测电路和处理单元。 电流传感器监测电力线电流，并将电力线电流的高频分量提供给di / dt输入检测电路。 dv / dt输入检测电路监视电源线电压。 di / dt和dv / dt输入检测电路分别产生携带有关电力线电流和电力线电压变化的信息的信号。 处理单元分析电力线电流和电力线电压中的这些变化，以便以更高的精度将检测到的电弧事件与有害负载区分开。
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5.发明申请Methods of detecting arc faults characterized by consecutive periods of arcing 有权以连续的电弧周期为特征的电弧故障检测方法公开(公告)号：US20060181816A1
公开(公告)日：2006-08-17
申请号：US11391954
申请日：2006-03-29
申请人： Christian Pellon , Michael Lavado , Jeffrey Ting
发明人： Christian Pellon , Michael Lavado , Jeffrey Ting
IPC分类号： H02H3/00
CPC分类号： G01R31/025 , H02H1/0015 , H02H1/0092
摘要： An apparatus and method for detecting electrical arc faults that has reduced susceptibility to nuisance tripping. The apparatus includes a current sensor, an input sense circuit, an arcing sense circuit, a power supply, a tripping circuit, a processing unit, and an electromechanical interface. The processing unit measures multiple voltage levels provided by the arcing sense circuit during a specified number of consecutive time periods. Next, the processing unit determines the number of consecutive time periods during which the voltage levels exceeded a specified minimum value, take on successively lower or higher values, or fall outside a predetermined normal range of values. Based upon the results of this determination, the processing unit either trips the electromechanical interface to interrupt power to a load, or inhibits tripping of the electromechanical interface, thereby reducing the occurrence of nuisance tripping.
摘要翻译： 一种用于检测电弧故障的装置和方法，其降低了对妨扰跳闸的敏感性。 该装置包括电流传感器，输入检测电路，电弧感测电路，电源，跳闸电路，处理单元和机电接口。 处理单元在指定数量的连续时间段内测量由电弧感测电路提供的多个电压电平。 接下来，处理单元确定电压电平超过规定的最小值的连续时间段的数量，连续变低或更高的值，或者落在预定的正常值范围之外。 基于该确定的结果，处理单元或者跳闸机电接口以中断对负载的电力，或者抑制机电接口的跳闸，从而减少妨碍跳闸的发生。
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