Abstract:Towards the target of “carbon peak and carbon neutrality” and the development of new power systems dominated by the renewables, the design of electricity market mechanisms plays a significant role in reducing carbon emissions and promoting green and low-carbon development. The construction of carbon market and green certificate market is regarded as an effective means to promote energy conservation and emission reduction in power systems. Researches on the coupling relationship among the electricity market, carbon market and green certificate market are of great guiding significance for designing cohesive mechanisms of different markets and promoting carbon reduction and development of the renewables. With this in mind, the coupling impact of carbon market and green certificate market on the equilibrium of electricity market is studied. Firstly, based on the transaction rules of carbon market and green certificate market, bi-level optimization models for electricity-carbon market, electricity-green certificate market and electricity-carbon-green certificate market are established respectively. Then, the multi-agent deep reinforcement learning algorithm is utilized to solve the aforementioned equilibrium models. Finally, simulations are conducted on the modified IEEE 30-bus system. The influence of carbon market and green certificate market on the bidding strategies of generation companies and the electricity market prices are analyzed as well as the coupling relationship between carbon market and green certificate market.