1.School of NARI Electric and Automation, Nanjing Normal University, Nanjing 210046, China;2.Jiangsu Provincial Integrated Energy Equipment and Integration International Joint Laboratory, Nanjing 210046, China;3.NARI Technology Co., Ltd., Nanjing 211106, China

In order to promote the grid-connected accommodation of offshore wind power and improve the operational energy efficiency of coastal industrial parks including power-to-gas (P2G), an optimal dispatch method of integrated energy systems with P2G considering integrated demand response and cascade energy utilization is proposed. First, an integrated energy system architecture including P2G is constructed. Then, aiming at the accommodation of wind power in the system, an integrated demand response model combining multi-energy load reduction and transfer, as well as energy coupling conversion is proposed. In view of the low energy efficiency of the system, the energy coupling and cascade utilization relationship of the system is excavated, the cascade utilization model of each energy coupling device including P2G is established, and the high-grade use of hydrogen energy is realized in combination with the actual use demand of hydrogen energy. Finally, taking into account the forecast error of wind power output, aiming at the minimum operation cost of the system, and using the comprehensive energy utilization rate and carbon emission as quantitative indicators, a stochastic optimal dispatch model of the integrated energy system is constructed. The effectiveness of the proposed method is verified by the simulation cases.