Preventive and corrective switching for feeder contingencies in distribution systems with fuzzy set algorithm

This paper presents a new fuzzy-set based algorithm for optimal switching. The algorithm deals with feeder contingencies and service restoration. Optimality will be pursued to get a preventive solution to avoid further contingencies. Issues of the inter-feeder load balance and inter-phase load balance will be emphasized. A fast algorithm has been developed by the fuzzy approach to avoid numerical computation. And the state-space of all the feasible solutions is confined by limited search instead of the time-consuming exhaustive search.