Optimal Scheduling of Wind-Solar-Thermal Integrated Energy System Considering CCPP and Energy Storage

With the proposal of “dual-carbon” goals, the large-scale grid connection of wind-solar new energy and the operational dilemma of traditional thermal power units have become prominent, leading to widespread attention on the Integrated Energy System (IES). However, existing studies lack exploration on the coupled operation of flexible units and the integrated energy optimization scheduling strategy for systems containing Carbon Capture Power Plants (CCPP). Therefore, this paper constructs a mathematical model for integrated energy optimization scheduling of wind-solar-thermal energy systems IES considering CCPP and energy storage. Combined with the power information of a certain region, it analyzes the collaborative operation strategies of different units under time-of-use electricity prices and carbon trading markets, as well as their impacts on the low-carbon economic operation characteristics of regional multi-source complementary systems. The study shows that the collaborative operation of CCPP and energy storage stations can coordinate the output and carbon emissions of each unit in the IES, improve the consumption level of renewable energy, enhance the system’s regulability, increase the benefits of the carbon capture system, and reduce system operation costs, providing a reference for the low-carbon development of the power industry.