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An off-grid microgrid electric vehicle ordered charging and discharging load modeling and solving method based on optimized operation

A technology for optimizing the operation of electric vehicles, applied in the field of electrical engineering, can solve problems such as the inability to trade electricity in large power grids, and the impact of wind power on micro-grids.

Active Publication Date: 2019-05-03
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the microgrid is running off-grid, it can only rely on itself to supply power to the load and absorb the wind and wind, and cannot trade power with the large grid. Therefore, the fluctuation of wind and wind output will have a more serious impact on the microgrid.

Method used

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  • An off-grid microgrid electric vehicle ordered charging and discharging load modeling and solving method based on optimized operation
  • An off-grid microgrid electric vehicle ordered charging and discharging load modeling and solving method based on optimized operation
  • An off-grid microgrid electric vehicle ordered charging and discharging load modeling and solving method based on optimized operation

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Embodiment Construction

[0072] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.

[0073] The invention aims to provide an off-grid micro-grid electric vehicle orderly charging and discharging load modeling method based on optimal operation. The technical solution for realizing the object of the present invention is: a kind of orderly charging and discharging load modeling of off-grid microgrid electric vehicles based on optimized operation, and the objective function is:

[0074]

[0075] In the formula, E is the total operating cost of the microgrid in one day, T is the total time period in a day, and N D is the number of diesel engines, EF(i, t) and ES(i, t) are the fuel consumption cost and start-up cost of the i-th diesel engine in the t-th time period respectively, E wg (t) and E pv (t) are the penalty fees for wind curtailment and solar curtailment in the tth time period, E load (t) is the load shedding fee...

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Abstract

The invention discloses an off-grid micro-grid electric vehicle ordered charging and discharging load modeling method based on optimized operation and a solving method of the off-grid micro-grid electric vehicle ordered charging and discharging load modeling method. An optimized day-ahead scheduling plan is provided for the off-grid microgrid; First of all, an objective function is established, Determining constraints, Correction data, GUROBI optimization software is called in MATLAB through a toolbox Yalmip to solve the MATLAB; the method has the advantages that electric vehicle load modelingis simplified from a complex nonlinear mixed integer programming problem to a linear mixed integer programming problem, the minimum operation cost of the microgrid is taken as the target, and meanwhile the influence of new energy output on the electric vehicle load is considered. The model is solved by calling the GUROBI, so that engineering personnel can learn and use the model conveniently, theuniversality is good, and the model can be widely applied.

Description

technical field [0001] The invention relates to the field of electrical engineering, in particular to an off-grid microgrid electric vehicle orderly charging and discharging load modeling and solving method based on optimized operation. Background technique [0002] Microgrids mainly include non-traditional distributed energy sources, such as wind power, photovoltaics, fuel cells, etc. Microgrids can be connected to large power grids or run off-grid. The randomness and volatility of wind and solar output will test the safe operation of the microgrid economy in the case of high penetration. When the microgrid is running off-grid, it can only rely on itself to supply power to loads and absorb wind and solar energy, and cannot trade power with the large grid. Therefore, the fluctuation of wind and solar output will have a more serious impact on the microgrid. [0003] At the same time, my country's policy support in recent years has led to the rapid development of electric veh...

Claims

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Application Information

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IPC IPC(8): G06F17/11G06Q10/04G06Q10/06G06Q50/06
CPCY04S10/50Y02E40/70
Inventor 胡博谢开贵郝钰朱睿王刚晁化伟马博韬
Owner CHONGQING UNIV
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