"Source-load" Low-carbon Economic Dispatch of Integrated Energy System Considering Carbon Capture System

To deal with environment problems and improve the energy efficiency, and taking the electricity & natural gas integrated energy system as the research object, a low-carbon and economic dispatch model is established, which considers the operation mode with carbon storage equipment as a hub to connect carbon capture power plants and electricity-to-gas conversion equipment. A comprehensive demand response mechanism based on time-sharing energy prices is constructed. Firstly, the effects of carbon capture and electricity-to-gas operation modes on the new energy consumption, the system carbon emission reduction and the operating performance improvement of each unit are analyzed. Secondly, a comprehensive demand response mechanism is introduced, which contains the vertical demand response of the same energy time shift and the horizontal demand response of different energy alternatives, to play the complementary role of electric or gas load. Then, the low-carbon economic dispatch model is established based on the low-carbon operation mode and comprehensive demand response. Finally, the proposed model is tested in the revised IEEE-39 node power network and the Belgium 20-node natural gas network coupling system, and the results show that the wind power consumption is promoted, and the carbon emission is reduced.