The power to gas(P2G)technique provides a new way for wind power accommodation

which will be an important supporting technology for the future integrated energy system. Considering the operational cost of P2G

this paper analyzes the influence of P2G on the wind power accommodation ability and operating economy of the integrated energy system. Besides

a multi-objective optimal day-ahead dispatch model is proposed to ease the contradiction between its higher operational cost and better effect for promoting wind power accommodation. Firstly

the models for P2G and its operational cost are established

and the model of energy hub including P2G devices is given. Then

in view of the high cost of P2G

the contradictory relationship between the operating economy and the wind power accommodation ability is coordinated by the multi-objective weighted fuzzy programming method. Finally

the model is simulated in an integrated energy system including 9 energy hubs. The results have verified the importance of considering the operational cost of P2G and the feasibility of considering operating economy and wind power accommodation ability together in the integrated energy system.