Based on analyzing the existing problems of the short line overcurrent protection in special distribution networks,this paper proposes an optimal configuration method for current-limiting reactor.By increasing the short circuit current difference between higher and lower protection,the overcurrent protection setting time is optimized.Particle swarm optimization algorithm is employed to configure current-limiting reactor,achieving the optimal configuration between current-limiting reactor installation location and the impedance value on the premise of maintaining the power system stability.Finally,the configuration calculation by the proposed algorithm in a coal mine power supply system helps formulating the feasible current-limiting reactor configuration scheme.
overcurrent protectiondistribution networkcurrent-limiting reactorparticle swarm optimizationmine distribution network
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