A distribution strategy of relief and repair materials for distribution network in typhoon scenarios is proposed in this paper. Firstly, the typhoon process is simulated by Batts model and the failure rate of electric poles is obtained based on the wind load theory. Secondly, the failure rate of overhead lines is obtained by tandem model of poles. Thirdly, a multi-timescale distribution method of relief materials before typhoon landing is proposed as the first step of the distribution strategy, through which wind-proof cables and generator cars are allocated based on the vulnerability index of overhead lines. The failure frequency of lines and the importance of loads are included in the vulnerability index, where the failure frequency of lines is related to the failure rate of lines. The weights of the two factors are determined by the Analytic Hierarchy Process (AHP). Finally, a distribution method of repair materials after typhoon is proposed as the second step of the distribution strategy, which is based on the priority index of lines to allocate the repair materials. The line integrity and load importance are included in the priority index and the weights of the two factors are determined by AHP. Simulation results show that the proposed distribution strategy can allocate the limited materials more effectively in typhoon scenarios.
Keywords Batts model, failure rate; vulnerability index; multi-time scale; Analytic Hierarchy Process; priority index of lines