Orderly charging and discharging method of electric bus based on time-of-use electricity price

Abstract

The invention provides an orderly charging and discharging method of an electric bus based on a time-of-use electricity price. The method comprises the following steps: acquiring electrical load dataof each time period of a local area from a power grid; judging a charging type of each electric bus, wherein the charging type includes the type of not accepting charging and discharging scheduling, the type of accepting ordered charging scheduling and the type of accepting ordered charging and discharging scheduling; on a power grid side, taking a minimum load wave crest and valley difference asa target function; at an electric bus operator side, taking minimum electric bus charging cost as the target function; and establishing an optimization model by taking a battery capacity, operation time and charging and discharging power of the electric bus as constraint conditions, and obtaining the optimal charging and discharging time and power by solving the model. According to the method, thepeak-valley difference of the power grid load can be adjusted, losses of the power grid caused by disordered charging of the load are reduced, and reliability of power grid operation is further improved. Based on a time-of-use electricity price policy, the electric bus is controlled to carry out orderly charging and discharging so that charging cost is reduced.

Description

technical field [0001] The invention relates to the field of public transportation, in particular to an orderly charging and discharging method for an electric bus based on a time-of-use electricity price. Background technique [0002] With the increasing awareness of environmental protection, the application of electric vehicles has become more and more extensive. Compared with private cars, buses have fixed driving routes, departure times and strong travel rules, and have lower requirements for cruising range. Therefore, many cities will use electric buses to replace existing fuel buses. [0003] In the prior art, electric buses are usually charged uniformly after operation. This charging method that does not consider the grid load has the following disadvantages: [0004] First, the existing technology does not give full play to the advantages of electric buses as a distributed power supply, and does not consider the regulation of the grid while integrating the electric ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects in the prior art, the object of the present invention is to provide an orderly charging and discharging method for electric buses based on the time-of-use electricity price. The problem with the charging method of the car

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