Coupled Planning of Three-micro Integrated Distribution-charging/swapping Station Considering Power Supply Reliability

Renewable energy sources such as wind and solar power are being distributedly integrated into the distribution system in the forms of micro-power station, micro-energy storage, and multi-energy microgrid. Under the global trend of energy transformation and sustainable development, the large-scale access of electric vehicles has posed new challenges to the safe and reliable operation of distribution networks. The deep integration of photovoltaic, electric vehicle, energy storage, grid, and load based on these three micro-elements will become an important way to optimize energy utilization and improve the system reliability. To this end, a coupled planning of three-micro integrated distribution-charging/swapping station considering power supply reliability is proposed. Firstly, in order to solve the problems of low efficiency and network congestion in the independent planning of charging/swapping station and distribution networks, a three-micro integrated distribution-charging/swapping station is established. Considering the complementary characteristics of battery swapping stations and charging piles, a charging demand distribution model for electric vehicles is proposed based on energy flow. Secondly, considering the coordinated response of remote control switches and flexible soft switches to fault scenarios, a cost-minimization coupled planning model of three-micro integrated distribution-charging/swapping station considering power supply reliability is proposed, including planning of distribution-charging/swapping station and three-micro. Finally, comprehensive indicator evaluation system is established to show the effectiveness and superiority of the proposed scheme under normal scenarios and fault scenarios through comparison and analysis.