公开(公告)号：US20100039741A1

公开(公告)日：2010-02-18

申请号：US12458237

申请日：2009-07-06

申请人： Campbell D. Booth ,  Andrew Mackay ,  David R. Trainer ,  Sean J. Loddick

发明人： Campbell D. Booth ,  Andrew Mackay ,  David R. Trainer ,  Sean J. Loddick

IPC分类号： H02H3/00

CPC分类号： H02H7/30 ,  H02H1/0061 ,  H02H7/261

摘要： Electrical distribution networks (9) are provided between an electrical power source (10, 42, 43, 50, 65) and electrical loads (11, 12, 13) in the form of a number of connections (A to G). Faults can occur within the electrical distribution network (9) resulting in fault electrical currents which may damage the network (9). An electrical protection arrangement comprises fault current flow detectors (A′ to G′, AA, BB, AAA to DDD) in a hierarchy of levels defined by cascades of connections it is possible to utilise a controller to actively trip a circuit breaker associated with a respective fault current flow detector (A′ to G′, AA, BB, AAA to DDD). In such circumstances by considering the level response from each fault current flow detector (A′ to G′, AA, BB, AAA to DDD) against a threshold, typically in a binary format, the controller determines by sequential movement along a fault path (31, 62) at which level in the hierarchy of levels the circuit breaker should be tripped to isolate parts of the electrical distribution network (9). Generally, the lowest level within a hierarchy of levels is tripped to isolate the minimum amount of the electrical distribution network (9) leaving the remainder of the electrical distribution network (9) operational.

摘要翻译： 配电网（9）设置在多个连接（A至G）形式的电源（10,42,43,50,65）和电负载（11,12,13）之间。 在配电网络（9）内可能会发生故障，导致可能损坏网络（9）的故障电流。 电气保护装置包括在由连接级联限定的层级中的故障电流流量检测器（A'至G'，AA，BB，AAA至DDD），可以利用控制器主动跳闸与 各自的故障电流检测器（A'至G'，AA，BB，AAA至DDD）。 在这种情况下，通过考虑来自每个故障电流流量检测器（A'至G'，AA，BB，AAA至DDD）的电平响应（通常以二进制格式），控制器通过沿故障路径 31，62）断路器应在跳闸级别的层级中隔离配电网络（9）的部分。 通常，级别层级中的最低级别被跳闸以隔离离开电力分配网络（9）的其余部分的可配置的配电网络（9）的最小量。