Research on optimal placement of low‐carbon equipment capacity in integrated energy system considering carbon emission and carbon trading

Integrated energy system (IES) can improve energy efficiency, reasonable configuration of low-carbon equipment in IES can effectively reduce carbon emissions and achieve carbon peaking and carbon neutrality. Under the background of carbon peaking and carbon neutrality, this paper proposes a configuration method of low-carbon equipment in IES considering life cycle carbon emissions and ladder-type carbon trading cost. Firstly, the IES architecture of animation and cartoon industry parks in Sino-Singapore Tianjin eco-city is analyzed, and the models of "electrical/heating/cooling" energy supply equipment and integrated energy storage equipment are built. Secondly, the two-stage operation of power to gas (P2G) is refined, and P2G is subdivided into equipment combination of electrolyzer, methanation reactor, hydrogen fuel cell to study the various benefits of hydrogen energy. Then, the life cycle carbon emission calculation method of renewable energy power generation and P2G equipment is proposed, the life cycle carbon emission model of IES is established, and the ladder-type carbon trading mechanism is introduced to restrict IES carbon emission. On this basis, aiming at minimizing carbon emission cost, energy purchased cost, equipment investment, operation and maintenance cost, and renewable energy power generation curtailment cost, a joint optimal configuration model of renewable energy power generation and P2G is established in order to realize the low-carbon economic operation of IES. Finally, through multi-scenario comparative analysis, the correctness and effectiveness of the optimal configuration method of low-carbon equipment in IES are verified, and the influence of carbon trading mechanism and refining two-stage operation of P2G on the optimal configuration results are discussed.