A High Proportion of New Energy Participates in the Design of the Day-Ahead Market Clearing Mechanism

New energy will become the main role of power market transaction in the new power system. It is necessary to establish fair and reasonable market mechanism for new energy participation, and ensure win-win benefits of all types of energy market subject under the premise of safe and reliable operation of power grid. Considering the large increase of the proportion of new energy in the future, this paper puts forward the design principles of new energy participating in the spot market, designs the spot market mechanism and market declaration, clearing and settlement compensation mechanism to promote the new energy consumption. Finally, the consumption of new energy, the change of system cost and the income of market entities are simulated under the condition of high proportion of new energy, The results show that compared with the forced replacement of new energy, the adoption of secondary clearing mechanism can promote the new energy consumption and reduce the operating cost of the system. The corresponding cost allocation is more fair and reasonable according to the market main body behavior.