Distributed Energy Development Planning of Microgrid With Multi-vector Interaction Strategy Design Under Carbon Reduction Demand
The development of distributed energy is an important part of achieving carbon neutrality in power systems;its development planning,breadth,and velocity greatly impact the security and cost of power system operation.Therefore,it is necessary to investigate the optimal development planning of distributed energy,such as wind power,PV,and energy storage,under different interactive strategies between the main and microgrids.Firstly,this paper proposes five interactive strategies and operation modes between the main and microgrids.Then,a distributed energy development planning analysis methodology based on piece-wise optimization is proposed;this includes establishing a bi-level optimization model for distributed energy development under each interactive strategy and development planning evaluation method based on D-S theory.Finally,the proposed method is applied to typical onshore and offshore island microgrids in China,and their development planning for 2021-2060 was analyzed.Simulation results show that the wind power in the island grid and PV in the onshore microgrid exhibit front-end development pathways.A comparison of onshore microgrid PV development between the simulated results and the long-term plan developed by the relevant operator demonstrates the feasibility and effectiveness of the proposed method.