公开(公告)号：US06222711B1

公开(公告)日：2001-04-24

申请号：US09294392

申请日：1999-04-20

申请人： Masao Hori ,  Noriyosi Suga ,  Kuniyasu Imamura ,  Hirosi Nisida ,  Masato Okazaki

发明人： Masao Hori ,  Noriyosi Suga ,  Kuniyasu Imamura ,  Hirosi Nisida ,  Masato Okazaki

IPC分类号： H02H318

CPC分类号： H02H3/40 ,  H02H7/22 ,  H02H7/262

摘要： A bus-bar protection relay equipment includes a data-acquisition means, a check zone protection means, a fault bus-bar judging means, and a tripping bus-bar judging means. A data-acquisition means transforms analog current signal from the current transformer connected to the bus-bar with two or more dependency regions into digital data at every predetermined cycle. The check zone protection means computes amount Id (vector sum) of operation, and the amount Ir (scalar sum) of inhibition using the digital data transformed by this data-acquisition means. The check zone protection means transforms analog current from the current transformer of a line segment into digital data “n” multiplied with. The amount Id of operation and the amount Ir of inhibition are computed. An actuating signal is outputted when predetermined relationship is satisfied by using the amounts Id and Ir. The fault of the internal and the external to the area which included the computed value two or more dependency regions by a predetermined a percentage differential protection calculation is judged. A fault bus-bar judging means 13 performs a fault bus-bar judging by two or more above-mentioned dependency regions using the operating quantity which computed the operating quantity and computed it in the operating quantity and the check zone protection means which were computed.

摘要翻译： 母线保护继电器设备包括数据采集装置，检查区保护装置，故障总线条判断装置和跳闸总线条判断装置。 数据采集​​装置将连接到母线的电流互感器的模拟电流信号以两个或多个依赖区域转换为每个预定周期的数字数据。 检查区域保护装置使用由该数据采集装置变换的数字数据来计算操作量Id（矢量和）和禁止量Ir（标量和）。 检查区保护装置将来自线段的电流互感器的模拟电流变换为数字数据“n”乘以。 计算操作量Id和抑制量Ir。 当通过使用量Id和Ir来满足预定关系时，输出致动信号。 判断包含计算值两个以上依赖区域的区域的内部和外部的故障预定百分比差分保护计算。 故障总线条判断装置13使用计算操作量的操作量并且在计算的操作量和检查区域保护装置中对由两个或更多个上述依赖区域进行判断的故障总线条进行判断。