Distributed destruction-oriented power system optimal defense method

The invention discloses a distributed destruction-oriented power system optimal defense method, which belongs to the field of power system security defense, and comprises the following steps of: establishing a distributed destruction-oriented power system optimal defense model by introducing a ternary relationship of an operator, an attacker and a defender, and applying a game strategy to a power system, the optimal component protection strategy of the power system under distributed deliberate attacks can be accurately solved, urban managers can be helped to make optimal protection decisions at limited cost, the toughness loss of the power system under deliberate damage is reduced, and compared with an existing model, the method has the advantages that the method is easy to implement. The toughness of the power system is improved more obviously in the face of dispersive deliberate damage; from the perspective of toughness, according to the difference in recovery time after different components in the power sy