A cooperative game-based vulnerability assessment method for distribution lines in typhoon weather

Abstract

Identification and protection of vulnerable lines is the key point of typhoon disaster prevention in distribution networks in coastal areas. This paper proposes a comprehensive lines vulnerability assessment method based on combined weight using cooperative games. Firstly, a distribution line vulnerability evaluation index system is constructed from four aspects: line fault probability, line loss value, line electric betweenness, and line degree. Secondly, the entropy method and CRITIC weight method are used to calculate the weights of each evaluation index in the evaluation system, respectively, and the cooperative game method is used to combine the two weights. Finally, the combined weight is used to evaluate the vulnerability of the line. The power distribution system in a certain area is used for the example simulation, and the key vulnerable lines of the distribution network can be identified, which shows the rationality and effectiveness of the proposed method.