Control system for and method of fault location, isolation and supply restoration

摘要

A control system for and a method of fault isolation and electrical power restoration on an electrical network are provided and comprise: a plurality of electrical power supply facilities connectable to a region of a network, the region comprising a plurality of segments connectable to one or more neighbouring segments by a respective switching device; and the method including the steps of: detecting a fault condition within the region; operating the plurality of switching devices connecting the segments within the region so as to disconnect those segments from one another; performing a reconnection routine for each of a plurality of reconnection zones, being run concurrently, and each including the steps a to d of: a) selecting from the set of all unpowered segments within the reconnection zone a single unpowered segment that is connectable to a neighbouring powered segment, or is connectible to the electrical power supply facility associated with the reconnection zone, b) connecting the selected segment to provide electrical power to that selected segment, c) determining whether a fault has occurred within the reconnection zone, d) if a fault is determined to have occurred at step c, setting a halt status and identifying the selected segment as the segment causing the fault condition, or else repeating steps a to d until all segments within the reconnection zone are electrically connected to the respective electrical power supply facility, or until a halt status is set by another one of the concurrent reconnection routines; isolating the segment identified as causing the fault condition; and reconnecting the segments within the region to an electrical power supply facility, excluding the identified isolated segment.