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    • 5. 发明申请
    • APPARATUS FOR MONITORING FAULT CURRENT IN POWER SYSTEM
    • 监控电力系统故障电流的装置
    • US20110267727A1
    • 2011-11-03
    • US13091030
    • 2011-04-20
    • Chung Woo LEE
    • Chung Woo LEE
    • H02H3/26
    • G01R19/16547G01R19/10G01R19/16571
    • Disclosed is an apparatus for monitoring a fault current in a power system. The apparatus does not rectify an AC signal detected from a power system but full wave-rectifies the AC signal using a bridge diode and then monitors a fault current. Particularly, current and voltage in the power system are respectively detected through a current transformer and a Rogowski coil, and presence of occurrence of an accident is parallely monitored using the detected current and voltage. Thus, it is possible to prevent a response delay due to a rising time generated when the AC signal is smoothed to a DC signal through a capacitor and to prevent malfunction caused by chattering while performing a fast response at the time when a fault current is generated for the first time.
    • 公开了一种用于监视电力系统中的故障电流的装置。 该装置不会纠正从电力系统检测到的交流信号,而是使用桥二极管对AC信号进行全波整流,然后监视故障电流。 特别地,电力系统中的电流和电压分别通过电流互感器和罗戈夫斯基线圈检测,并且使用检测到的电流和电压平行地监视事故的发生。 因此,可以防止当通过电容器将AC信号平滑到DC信号时产生的上升时间的响应延迟,并且在产生故障电流时执行快速响应时防止由抖动引起的故障 首次。