公开(公告)号：US20080211511A1

公开(公告)日：2008-09-04

申请号：US12019762

申请日：2008-01-25

申请人： Myeon Song Choi ,  Seong Il Lim ,  Seung Jae Lee

发明人： Myeon Song Choi ,  Seong Il Lim ,  Seung Jae Lee

IPC分类号： G01R31/08

CPC分类号： G01R31/086 ,  H02H3/081 ,  H02H3/385 ,  Y04S10/522

摘要： The present invention relates to a method of generating fault indication in a feeder remote terminal unit for a power distribution automation system. The method is performed in a distribution system that includes a plurality of feeder remote terminal units, which are installed in respective sections of a line and are configured to measure voltage, current and a phase difference of the line, and a central control unit for determining whether a fault occurs and controlling operation of the feeder remote terminal units. In the method, phases are measured by each of the feeder remote terminal units. The phase of a zero-sequence current is compared with that of a zero-sequence voltage. A direction of a fault current is calculated, and fault indication information is generated in the calculated direction of the fault current.

摘要翻译： 本发明涉及在配电自动化系统的馈线远程终端单元中产生故障指示的方法。 该方法在包括多个馈线远程终端单元的分配系统中执行，该多个馈线远程终端单元安装在线路的各个部分中，并被配置为测量线路的电压，电流和相位差;以及中央控制单元，用于确定 是否发生故障并控制馈线远程终端单元的操作。 在该方法中，通过每个馈线远程终端单元测量相位。 将零序电流的相位与零序电压的相位进行比较。 计算故障电流的方向，并根据故障电流的计算方向生成故障指示信息。