The integrated energy system (IES)

known for its flexibility and environmental friendliness

is a promising solution for low-carbon economies and energy efficiency. However

existing IES modeling methods are limited in their ability to explore the synergistic coupling of hydrogen energy across multiple devices

and the scheduling strategies lack market mechanism support. To address this

an optimal scheduling strategy of hydrogen-containing IES is proposed

which comprehensively considers green certificate trading

tiered carbon emission trading

and demand response. Firstly

a hydrogen multi-utilization model based on two-stage power-to-gas is established to promote the use of renewable energy. Secondly

a green certificate-carbon joint trading mechanism is developed to reduce reliance on fossil fuels through market incentives. Finally

an IES optimal scheduling model is constructed with the objective of minimizing economic operating costs

incorporating comprehensive demand response to optimize user-side energy consumption. The model is solved using the CPLEX solver. The results demonstrate that the proposed model effectively achieves multi-energy coupling within IES

enhances the absorption capacity of renewable energy

and reduces carbon emissions.