Electric vehicle cluster power regulation method and system based on two-stage crossover control

Abstract

The present invention relates to a method and device for electric car cluster power regulation based on two-stage cross control. The method comprises the following steps: 1) establishing a grid-connected model of electric car cluster active and reactive mixed control, and determining an objective function for performing active and reactive optimization control of an electric car cluster and constraint conditions thereof; 2) establishing an objective function for performing active optimization of the electric car cluster and constraint conditions thereof; 3) dividing the charging duration of the electric car cluster into a plurality of power control durations; 4) performing solution of the objective function for active power control, and obtaining an active power optimization result; 5) establishing an objective function for performing grid-connected reactive optimization of the electric car cluster and constraint conditions thereof; 6) performing solution of the objective function for reactive optimization, and obtaining a reactive power optimization result; and 7) repeating the step 4), the step 5) and the step 6, and performing active optimization and reactive optimization for the electric car cluster in each power control duration. The method and device for electric car cluster power regulation based on the two-stage cross control can be widely applied to the power regulation of the electric car cluster.

Description

technical field [0001] The invention relates to a power regulation method and system for an electric vehicle cluster, in particular to a power regulation method and system for an electric vehicle cluster based on two-stage crossover control. Background technique [0002] In order to reduce the consumption of oil resources and alleviate environmental pollution, all parties are seeking effective methods, and the use of clean energy has attracted widespread attention. Among them, electric vehicles replace oil with electricity, which can achieve "zero emission" and "low noise", and are gradually replacing traditional fuel vehicles, becoming an important means to solve energy consumption and environmental pollution. However, electric vehicles need to be connected to the grid for charging. On the one hand, it increases the load on the grid, which poses challenges to the balance of power supply and demand and the safety and stability of the power system; on the other hand, the char...

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Problems solved by technology

[0004] In view of the above problems, the object of the present invention is to provide a method and system for adjusting the power of electric vehicle clusters based on two-stage crossover control, which realizes the rapid control and overall optimization of large and dispersed electric vehicle clusters through two-stage crossover control. Solve the power quality problems caused by disorderly charging of a large number of electric vehicles, and provide reactive power support for the grid

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