The power-to-gas(P2 G) technology realizes bidirectional flow of energy between electricity and natural gas

and provides a new way for waste wind power accommodation in multi-energy systems. The technical principle of the P2 G system equipment is studied

the mathematical model of the P2 G system is established

and the principle of waste wind power accommodation is analyzed. On the basis of putting forward start-stop strategy of the P2 G

a cooperative optimal dispatching model of multi-energy system with P2 G conversion function is established. Moreover

the waste wind power accommodation effect of two combination schemes

the gas-steam combined cycle unit combined with the P2 G and the conventional thermoelectric unit combined electric boiler

are compared. The result shows that

both the P2 G and electric boiler are beneficial to waste wind power accomodation

but the consumption effect of the P2 G is weaker than that of the electric boiler. However

the scheme of gas-steam combined cycle unit combined with the P2 G has better effect.