Regional power grid electric vehicle peak regulation optimization scheduling method based on two stages

Abstract

The invention discloses a regional power grid electric vehicle peak regulation optimization scheduling method based on two stages, and relates to the field of regional intelligent power grids. According to the scheduling method, the method includes performing classification according to electric vehicle (EV) load operation characteristics, and building four EV load models of rigid, schedulable, flexible and intelligent battery replacement respectively; giving an EV peak regulation pricing strategy on the basis of a fuzzy analytic hierarchy process (FAHP) by considering various costs of EV participating in peak regulation; in the first stage, taking the minimum load peak-valley difference as a target, and performing decision making on EV peak regulation pricing under the target, so that the peak regulation capacity of a power system is reduced, and regional power grid load distribution is adjusted; and in the second stage, depending on the peak regulation pricing curve obtained in the first stage, arranging the EV load by taking the minimum charging cost of the EV user as a target. Compared with a mainstream scheduling strategy, the peak regulation pressure of a regional power grid can be more effectively relieved, the cost is reduced, the load peak-valley difference is reduced, and the wind power photovoltaic consumption level is improved.

Description

technical field [0001] The invention relates to the field of regional smart grids, in particular to a two-stage peak-shaving optimization scheduling method for electric vehicles in regional grids. Background technique [0002] With the proposal of the "Double Carbon Target" and the large-scale grid integration of new energy sources, the development of the power system is facing enormous challenges. At present, the power supply situation in many places in my country is tense, the peak-to-valley difference of the equivalent load of the power system is gradually increasing, and the pressure on peak regulation is also increasing. As a new type of load, EV is schedulable and flexible. It can not only transfer EV load to the low period of the system, realize peak shaving and fill valley, but also enhance the peak shaving capability of the system through EV feed. It is of great significance to guide EV charging and discharging to participate in system peak shaving through reasonab...

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Problems solved by technology

[0003] In order to solve the problems that the peak-to-valley difference of the equivalent load of the power system and the peak-shaving pressure gradually increase, there is no mature pricing strategy for EV participation in peak-shaving, and the enthusiasm of EVs to participate in peak-shaving is not high, the present invention provides a two-stage based area Optimal scheduling method for electric vehicle peak shaving in power grid

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