Voltage crop constrained restoration of supply by switch operation in distribution systems

An algorithm is presented for power system load transfer by remotely-controllable switch operations in distribution systems when a fault occurs. In view of practical use, the authors consider both the current capacity and voltage-drop constraints of this load transfer algorithm. Taking these constraints into consideration, the loads in an out-of-service area are transferred to the transformers in an adjacent area. Since it is possible to reduce the out-of-service area monotonically by switch operation, the algorithm proposed is of practical importance. The algorithm is tested for large-scale real distribution system. The numerical results indicate that the algorithm is valid.>