Electric vehicle charging station charging optimization method based on photovoltaic power generation system

Abstract

The invention discloses an electric vehicle charging station charging optimization method based on a photovoltaic power generation system. The method includes the steps that a photovoltaic power generation characteristic curve, an electric vehicle charging load and the number of electric vehicles on that day are predicted respectively; an electric vehicle user price response model and a charging service price optimization model are established; an objective function is established with minimization of photovoltaic power generation abandon quantity as an object and is solved, and charging station operation on that day is conducted according to the obtained charging service price result on that day; charging operation on that day is finished, and a charging load prediction of the next day and an inflection point value of a corresponding electric vehicle user charging service price module are corrected according to practical situations of that day; the steps are repeated according to corrected parameter values, and charging station operation of the next day is optimized. Influence of charging of the electric vehicles on a power grid can be effectively eliminated, the photovoltaic utilization rate is increased, and charging cost of electric vehicle users is lowered.

Description

technical field [0001] The invention relates to a charging optimization method, in particular to a photovoltaic power generation system-based charging optimization method applicable to electric vehicle charging stations in public areas. Background technique [0002] Pure electric vehicles have the characteristics of zero emissions and become an important means to solve the environment and air pollution in large and medium-sized cities. Major cities in China have started the promotion and application of pure electric passenger vehicles, mainly focusing on taxis and government vehicles, and gradually expanding to private use. Due to the lack of private car parking spaces in large and medium-sized cities and the lack of maintenance and maintenance systems for private use of pure electric vehicles, the group customer model with private use characteristics has a good promotion prospect. The electric vehicle users under the group customer model are mainly employees of enterprises...

AI Technical Summary

Problems solved by technology

The access of large-scale charging infrastructure will affect the power generation side, transmission network and distribution network. At present, research on such charging stations at home and abroad is mainly focused on the method of controlling the charging load power to reduce the maximum peak power. , shifting peaks and filling valleys, etc. as the main control objectives, mainly by means of compulsory control of charging power and changing charging time, electric vehicle users can only passively accept regulation, and cannot actively choose charging time, and pure electric vehicle users have not established time-sharing The response model of electricity price does not consider the subjective will of electric vehicle users and charging expenses

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