###### Abstract  
To address the increasing hydrogen demand and carbon emissions of industrial parks, this paper proposes an integrated energy system dispatch strategy considering multi-hydrogen supply and comprehensive demand response. This model adopts power-to-gas technology to produce green hydrogen, replacing a portion of gray hydrogen and incorporates a carbon capture system to effectively reduce the overall carbon emissions of the industrial park. Meanwhile, incentive-based and price-based demand response strategies are implemented to optimize the load curve. A scheduling model is established targeting the minimization of procurement, operation, carbon emission, and wind curtailment costs. The case study of a northern industrial park in China demonstrates that the joint supply of green and gray hydrogen reduces carbon emissions by 40.98% and costs by 17.93% compared to solely using gray hydrogen. The proposed approach successfully coordinates the economic and environmental performance of the integrated energy system. This study provides an effective scheduling strategy for industrial parks to accommodate high shares of renewables while meeting hydrogen needs and carbon reduction targets. integrated energy systems; demand response; tiered carbon trading; green hydrogen substitution 20  
biological, and electrochemical methods for hydrogen production from biomass, demonstrating the superior effectiveness of thermochemical approaches in biomass hydrogenation [4]. [PERSON] et al. conducted a comparative study on the carbon emissions of hydrogen production from biomass and coal, affirming a 75.4% reduction in carbon emissions for biomass hydrogenation compared to coal hydrogenation [5]. [PERSON] et al. investigated nuclear-powered hydrogen production, considering the utilization of the advanced pressurized water reactor (APWR) and high-temperature gas-cooled reactor (HTGR) to provide energy for electrolysis [6]. [PERSON] et al. discussed the cost estimation and safety aspects of large-scale nuclear hydrogen production using various nuclear propulsion technologies, presenting the current research status of thermochemical cycles for hydrogen production [7]. However, in contrast, biomass hydrogen production yields are relatively low and insufficient to meet the hydrogen demand of the industrial park. While nuclear-powered hydrogen production allows for large-scale hydrogen generation, it involves safety risks and waste management challenges and is not applicable to all scenarios. In comparison to these alternatives, wind-powered hydrogen production, despite its drawbacks such as susceptibility to weather fluctuations and the need for upfront infrastructure investments, offers advantages in terms of widely distributed wind energy resources and high flexibility. Moreover, the hydrogen output is sufficient to meet a portion of the industrial park's hydrogen demand. Therefore, this study opts for the investigation of wind-powered hydrogen production, which is adaptable to a wide range of scenarios and exhibits high hydrogen production capacity. Wind power, in this context, requires the use of power-to-gas (P2G) technology for hydrogen extraction. Prior research has investigated the P2G technology. [PERSON] tackled the issue of bidirectional energy flow between the electricity and natural gas systems using a multi-objective black hole particle swarm optimization approach [8]. Additionally, the study suggested a gas demand management strategy to ensure a balanced gas flow. [PERSON] et al. used a blend of P2G technology and gas-fired power plants to create a framework that measures its ability to reduce carbon emissions and utilize renewable energy [9]. To quantify the flexibility of P2G units in the electricity-gas-hydrogen-integrated distribution system, [PERSON] established a multi-energy vector framework containing multiple P2G units and assessed it through a node operating envelope (NOE) [10]. [PERSON] et al.