Electric vehicle orderly charging scheduling method and system based on improved GRASP algorithm

A technology of electric vehicles and dispatching methods, applied in the direction of circuit devices, AC network circuits, AC network load balancing, etc., can solve the problem that the optimized solution is not as good as the multi-objective model, so as to reduce operating costs, increase node voltage levels, reduce The effect of network loss

Inactive Publication Date: 2018-12-21
SICHUAN UNIV
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Problems solved by technology

The above-mentioned methods are to build a single-objective optimization model. Although it can reduce the negative impact of electric vehicles on the power grid in some aspects, the optimization scheme is not as comprehensive as the multi-objective model.

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  • Electric vehicle orderly charging scheduling method and system based on improved GRASP algorithm
  • Electric vehicle orderly charging scheduling method and system based on improved GRASP algorithm
  • Electric vehicle orderly charging scheduling method and system based on improved GRASP algorithm

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings.

[0048] The method and system for orderly charging scheduling of electric vehicles based on the improved GRASP algorithm provided by the present invention are based on the following theoretical basis.

[0049] 1. Electric vehicle charging control method

[0050] After the electric vehicle enters the charging station, the intelligent detector obtains its state of charge (SOC), charging power and other parameters, and calculates the time required to fully charge the battery. Users can manually set the pick-up time and pre-charge amount according to the "urgency" of charging. The charging station transmits these information parameters to the distribution network operator, the operator formulates an economical and reasonable orderly charging scheduling...

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Abstract

A method and system for orderly charging and dispatching electric vehicle based on an improved GRASP algorithm are disclosed. The orderly charging and dispatching method and system are based on the improved GRASP algorithm to formulate charging optimization strategy. A Path-Relinking is applied as an enhancement strategy to the local optimal solution obtained in the local search phase, further theobtained local optimal solution are optimized and updated to obtain the final solution, and the electric vehicle is charged and dispatched accordingly, the problem of traditional GRASP algorithm canbe avoided, effectively reduce the distribution network operating costs, reduce network losses and improve the node voltage level, conducive to high permeability electric vehicles connected to the grid to maintain safe and economic operation of the system and peak load filling, to solve the problem of electric vehicles orderly charging with some help.

Description

technical field [0001] The invention relates to electric vehicle charging technology, in particular to an orderly charging scheduling method and system for electric vehicles based on the improved GRASP algorithm. Background technique [0002] As a kind of environment-friendly means of transportation, electric vehicles are more and more favored by the majority of users. However, grid-connected charging of large-scale electric vehicles will have a certain degree of impact on the medium-voltage or low-voltage distribution network, causing problems such as "peak on top of peak". By adopting various charging strategies to guide the orderly charging of electric vehicles, the impact on the grid can be reduced. [0003] How to formulate a coordinated charging strategy for electric vehicles has been studied by many domestic and foreign scholars. Some establish a linearly constrained convex quadratic programming model for coordinated charging of electric vehicles to maximize the goa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32
CPCH02J3/32H02J2203/20
Inventor 周步祥姚先禹刘治凡陈实杨明通黄河何飞宇魏金萧
Owner SICHUAN UNIV
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