Abstract: In order to consider both economic benefits of the charging station and the safety of the distribution network， a multi-objective optimized scheduling model for electric buses participating in vehicle to grid (V2G) is established. This model takes into account not only the travelling need of electric buses， but also the bus-pile connection status in the charging station. Due to the low correlation among objectives， the fuzzy membership function is used to fuzzy up objectives. Then the multi-objective optimization problem is transformed into single-objective problem to maximize satisfaction on the basis of the maximum and minimum theory. Finally， single-objective strategy and the multi-objective strategy are compared under disordered charging mode and V2G charging mode， which verifies the economy and effectiveness of the multi-objective model of charging station participating in V2G.

Key words:  electric bus, charging station, multi-objective optimization, fuzzy membership, vehicle to grid（V2G）