Distributed power supply site selection planning method considering line fault and power grid toughness

The invention discloses a distributed power supply site selection planning method considering line faults and power grid toughness, and the method comprises the following steps: considering a line fault model under the influence of a typhoon load, and analyzing the influence of the typhoon on a line meteorological load; calculating the fault probability of the line by combining the load capacity which can be actually borne by the line; a fault scene is selected by using system information entropy, the scale of faults possibly caused by typhoon and the occurrence probability of the faults are determined, and a distributed power supply site selection model is established based on the calculated line fault probability; and solving the distributed power supply site selection planning model considering the line fault rate and the power grid toughness by using a multi-target particle swarm algorithm. According to the method, for different typical scenes which may occur, the distributed power supply site selection p