Day-ahead optimal dispatch of regional power grid based on electric vehicle participation in peak shaving pricing strategy

Aiming at the problems of power fluctuation, high dispatch cost and poor operation stability caused by large-scale grid connection of electric vehicles (EV) and new energy power generation such as wind power and photovoltaics, this paper proposes a regional power grid based on the participation of electric vehicles in the pricing strategy of peak shaving. optimize the scheduling plan. Firstly, according to the EV load operating characteristics, four types of EV load models, namely rigid, schedulable, flexible and intelligent power exchange, are established. The EV peak shaving pricing strategy is given; then based on this strategy, the regional power grid is optimally dispatched before the day: take the minimum load peak-to-valley difference as the goal, and make decisions on the EV peak shaving pricing under this goal to reduce the peak shaving capacity adjustment of the power system Regional grid load distribution. Finally, the validity and rationality of EV participation in peak shaving pricing are verified by example simulation.