Fast charging load guidance strategy based on adjustable charging service fee

Abstract

Aiming at solving the problem of the deterioration of the voltage quality of the distribution network caused by the fast charging load of large‐scale electric vehicles, a fast charging load guidance strategy based on adjustable tiered charging service fees is proposed to guide users to adopt the charging location decision with the least comprehensive charging cost, and then balance the charging load distribution of each charging station to improve the voltage quality of the distribution network. Firstly, considering the constraints of the regional road network and distribution network, a fast charging load forecasting model based on the trip chain theory and Monte Carlo method is established; secondly, a regional tiered charging service fee adjustment model is constructed with the optimization goal of minimizing the absolute sum of node voltage deviations of distribution network; then, the user charging location weighted decision model with the least comprehensive cost of charging service fee, trip time and road power consumption is constructed. Finally, from the calculation, it can be seen that the adjustable tiered charging service fees can more effectively guide users to change the charging location, thus improving voltage quality and reducing pressure on grid capacity.

Bounded rational real‐time charging pricing strategy under the traffic‐grid coupling network

“…Regional power grid fluctuations play an important role in optimising the power quality of the regional distribution network. Reference [24] proposes a charging guidance strategy considering charging service fee, trip time and road power consumption, which reduces the overall voltage deviation of the distribution network and reduces the charging cost of users, but the income of the charging station also decreases. Reference [25] proposed a two-level optimisation model for EV charging based on the real-time charging price of the regional grid load.…”