Charging control method and system for electric vehicle aggregator

Abstract

The invention relates to a charging control method and system for an electric vehicle aggregator. The charging control method comprises the steps of establishing a dual-layer optimization model for electric vehicle aggregator bidding based on the current driving mode; solving the dual-layer optimization problem according to constraint conditions to obtain the optimal solution of the dual-layer optimization problem; determining the charging policy of the electric vehicle aggregator according to the optimal solution; and controlling the electric vehicle aggregator to be charged according to the charging policy. According to the charging control method, the influence of the driving mode on the electric vehicle aggregator in participation in the electricity market trading bidding is taken into full consideration; the actual optimal bidding is realized under the premise of considering the coordination between the electricity purchasing cost of the electric vehicle aggregator and the current market benefit; and the charging policy is determined according to the optimal bidding in order to control the electric vehicle aggregator to be charged at the proper bidding cost so as to lower the electricity purchasing cost of the electric vehicle aggregator consequently.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a charging control method and system for electric vehicle groups. Background technique [0002] With the increasingly serious problems of energy crisis and environmental pollution, electric vehicles (PEV) have attracted the attention of governments around the world due to their energy saving and environmental protection characteristics. Among them, in addition to the advantages of low emission, low noise and high energy efficiency shared by electric vehicles, plug-in hybrid electric vehicles (PHEV) are also favored by users for their flexible driving modes and relatively mature technologies. At the same time, my country's new round of electricity reform clearly proposes to establish an electricity market that is dominated by mid-to-long-term transactions and supplemented by spot transactions. As an important part of electricity demand, electric vehicles are expected to pa...

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Problems solved by technology

[0004] However, there are two problems with the above research: First, the research usually focuses on a single PEV subject

Second, in the research literature on PEV participation in electricity market transactions, the influence of uncertain factors such as driving patterns is rarely considered. Therefore, the bidding price calculated by using traditional models for electric vehicle groups to participate in electricity market bidding is not the optimal price

However, charging at a time when the price is not optimal will increase the electricity purchase cost of the electric vehicle fleet

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