Impact of Power-to-Gas Cost Characteristics on Power-Gas-Heating Integrated System Scheduling

The power-to-gas (P2G) technology—a promising way to connect power and gas networks—will be widely used in the power-gas-heating integrated system (PGHIS) to promote its operational flexibility. However, the higher operational costs will affect the application of P2G on PGHIS scheduling, which cannot be ignored. In this paper, a PGHIS scheduling model considering the P2G cost and wind power utilization is proposed to analyze the impact of the P2G cost characteristics. First, a PGHIS including P2G is introduced, and different kinds of P2G operational costs are clarified to capture the cost characteristics of the P2G. Then, a multi-objective day-ahead scheduling model of the PGHIS is proposed to coordinate the tradeoff between its operational costs and the wind power utilization. Finally, the
$\varepsilon $
-constraint and entropy weight methods are used to solve the multi-objective model. The numerical results demonstrate that P2G cost characteristics can significantly affect the day-ahead scheduling of the PGHIS, and the proposed model can effectively achieve a compromise solution.