Research on Wind Power Accommodation for an Electricity-Heat-Gas Integrated Microgrid System With Power-to-Gas

With the development of new energy on a large scale, the application of power-to-gas (P2G) technology provides novel ideas for the consumption of renewable energy such as wind power. This paper proposes a nonlinear optimal model of wind power accommodation for an electricity-heat-gas integrated microgrid with P2G, taking the minimum operating cost, the minimum wind curtailment, and the minimum comprehensive cost as objectives. On the basis of meeting the demand for electricity, heat and gas loads, the security constraints of the electricity microgrid, and the gas network are considered in connection with the operating characteristics of the P2G devices. The optimization software GAMS is used to solve this model. Finally, the integrated system of a 14-bus microgrid and a modified 20-bus gas network is adopted for demonstrating the effectiveness of the application of the P2G to improve wind power accommodation capability.