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公开(公告)号：US08451574B2
公开(公告)日：2013-05-28
申请号：US11991124
申请日：2006-08-29
申请人： Ratan Das , Sethuraman Ganesan , John M. Peterson
发明人： Ratan Das , Sethuraman Ganesan , John M. Peterson
IPC分类号： H02H3/00
CPC分类号： H02H7/0455 , G01R19/2513 , G01R27/2694 , G01R31/027 , G01R31/34 , H02H3/006
摘要： The present invention is directed to a method and a system for fault detection analysis in a power device which is operatively associated with a differential protection unit. The power device has one input side and one output side through which an input current and an output current flows into and out from it, respectively. Signals representative of the input and output currents are processed in order to verify if an occurring fault is external to the power device. Under a condition of an external fault, the differential protection unit is disabled for a determined interval of time.
摘要翻译： 本发明涉及一种与差分保护单元可操作地相关联的功率器件中的故障检测分析的方法和系统。 功率器件具有一个输入侧和一个输出侧，输入电流和输出电流分别通过该输入侧和输出侧流入和流出。 处理代表输入和输出电流的信号，以验证发生故障是否在功率器件外部。 在外部故障的情况下，差动保护单元在一段确定的时间间隔内被禁用。
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公开(公告)号：US07710698B2
公开(公告)日：2010-05-04
申请号：US11819862
申请日：2007-06-29
IPC分类号： H02H7/00
摘要： A protective relay for an electrical power distribution system and a method. The protective relay includes first and second current transformers arranged to sense a respective current flowing into a power line, and a voltage sensing device arranged to sense the voltage of the power line. The protective relay further includes a first and a second device for determining the direction of a fault within the system based on a current signal from the first and second current transformers and a voltage signal from the voltage sensing means. The protective relay further includes a third device for determining the fault direction based on a sum of the current signals from the first and second current transformers and a voltage signal from said voltage sensing means. A controller determines whether a fault is internal or external based on the fault directions determined by the first, second and third devices.
摘要翻译： 一种用于配电系统的保护继电器及方法。 保护继电器包括布置成感测流入电力线的相应电流的第一和第二电流互感器，以及布置成感测电力线的电压的电压感测装置。 保护继电器还包括用于基于来自第一和第二电流互感器的电流信号和来自电压感测装置的电压信号确定系统内的故障方向的第一和第二装置。 保护继电器还包括第三装置，用于基于来自第一和第二电流互感器的电流信号的和和来自所述电压感测装置的电压信号来确定故障方向。 控制器基于由第一，第二和第三设备确定的故障方向来确定故障是内部还是外部故障。
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公开(公告)号：US20100208403A1
公开(公告)日：2010-08-19
申请号：US11991124
申请日：2006-08-29
申请人： Ratan Das , Sethuraman Ganesan , John M. Peterson
发明人： Ratan Das , Sethuraman Ganesan , John M. Peterson
IPC分类号： H02H3/00
CPC分类号： H02H7/0455 , G01R19/2513 , G01R27/2694 , G01R31/027 , G01R31/34 , H02H3/006
摘要： The present invention is directed to a method and a system for fault detection analysis in a power device which is operatively associated with a differential protection unit. The power device has one input side and one output side through which an input current and an output current flows into and out from it, respectively. Signals representative of the input and output currents are processed in order to verify if an occurring fault is external to the power device. Under a condition of an external fault, the differential protection unit is disabled for a determined interval of time.
摘要翻译： 本发明涉及一种与差分保护单元可操作地相关联的功率器件中的故障检测分析的方法和系统。 功率器件具有一个输入侧和一个输出侧，输入电流和输出电流分别通过该输入侧和输出侧流入和流出。 处理代表输入和输出电流的信号，以验证发生故障是否在功率器件外部。 在外部故障的情况下，差动保护单元在一段确定的时间间隔内被禁用。
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公开(公告)号：US20080036559A1
公开(公告)日：2008-02-14
申请号：US11819862
申请日：2007-06-29
摘要： A protective relay for an electrical power distribution system and a method. The protective relay includes first and second current transformers arranged to sense a respective current flowing into a power line, and a voltage sensing device arranged to sense the voltage of the power line. The protective relay further includes a first and a second device for determining the direction of a fault within the system based on a current signal from the first and second current transformers and a voltage signal from the voltage sensing means. The protective relay further includes a third device for determining the fault direction based on a sum of the current signals from the first and second current transformers and a voltage signal from said voltage sensing means. A controller determines whether a fault is internal or external based on the fault directions determined by the first, second and third devices.
摘要翻译： 一种用于配电系统的保护继电器及方法。 保护继电器包括布置成感测流入电力线的相应电流的第一和第二电流互感器，以及布置成感测电力线的电压的电压感测装置。 保护继电器还包括用于基于来自第一和第二电流互感器的电流信号和来自电压感测装置的电压信号确定系统内的故障方向的第一和第二装置。 保护继电器还包括第三装置，用于基于来自第一和第二电流互感器的电流信号的和和来自所述电压感测装置的电压信号来确定故障方向。 控制器基于由第一，第二和第三设备确定的故障方向来确定故障是内部还是外部故障。
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