Economic dispatching optimization method for microgrid comprising electric vehicle charging load

Abstract

The objective of the invention is to solve the disadvantage of insufficient flexibility of a comprehensive energy system caused by the fact that network access of an electric vehicle is not consideredin an optimization model established by a deterministic optimization method in the prior art. The invention discloses an economic dispatching optimization method for a microgrid comprising an electric vehicle charging load. The uncertainty and randomness of an electric vehicle charging load, wind-solar output and a CCHP system cooling, heating and power load are considered, an expected value model in stochastic programming is used for describing uncertainty and randomness of a charging load, an opportunity constraint form is used for representing the construction capacity of a charging facility so that the charging requirement of the electric vehicle can be met, and a multi-scene stochastic programming method is used for describing uncertainty and randomness of each stochastic variable. The expected target of the invention is to improve the flexibility of the comprehensive energy system, enhance the renewable energy consumption capability, reduce the comprehensive operation cost of the system in the operation period and provide necessary technical support for the economic dispatching operation of the microgrid.

Description

technical field [0001] The invention belongs to the technical field of electric power systems and automation thereof, and relates to a CCHP micro-grid economic scheduling optimization method considering the charging load of electric vehicles. Background technique [0002] With the development of science and technology, the global industry has risen rapidly and the economic level has been continuously improved, but the energy crisis and environmental pollution problems brought about by it are also becoming more and more serious. The traditional energy structure and utilization methods are unsustainable. Therefore, it is imperative to promote energy structure transformation, improve energy utilization efficiency, and develop clean energy and renewable energy. [0003] Nowadays, the research and application of microgrids have attracted more and more attention from all over the world. Microgrid is a small energy supply system that provides various loads to users through distrib...

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Problems solved by technology

[0007] In order to solve the shortcoming of insufficient flexibility of the comprehensive energy system caused by the optimization model established by the deterministic optimization method in the prior art that does not take electric vehicles into the grid, the present invention discloses a micro-grid economic dispatch including electric vehicle charging load Optimization

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