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Intelligent charge-discharge control method for electric vehicle

A charge and discharge control, electric vehicle technology, applied in electric vehicles, battery circuit devices, collectors, etc., can solve the problems of grid and user inconvenience, large grid fluctuations, etc., to improve economy and convenience, and improve economy , Guarantee the effect of power quality

Active Publication Date: 2012-07-11
BEIJING STATE GRID PURUI EXTRA HIGH VOLTAGE POWER TRANSMISSION TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sometimes electric vehicles charge blindly, resulting in large fluctuations in the power grid, causing inconvenience to the power grid and users

Method used

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  • Intelligent charge-discharge control method for electric vehicle
  • Intelligent charge-discharge control method for electric vehicle
  • Intelligent charge-discharge control method for electric vehicle

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Embodiment Construction

[0034] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] The electric vehicle intelligent charging and discharging control method in this embodiment includes the following steps:

[0036] (1) Acquisition of grid voltage waveform;

[0037] Data collection is mainly the collection of voltage signals. The voltage signals of the power grid are collected through precise voltage transformers, and the actual voltage state quantities are converted into small signals that can be processed by electronic equipment. The voltage transformer must first consider the rated voltage in the operating line, and secondly consider the input range and accuracy requirements of the measuring device. In the actual power system, the voltage in the line is very large, and the voltage transformer can convert the actual voltage into a small voltage output, which can reflect the actual voltage and c...

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Abstract

The invention discloses an intelligent charge-discharge control method for an electric vehicle. The method comprises the following steps: acquiring voltage waveforms of a power grid; performing mathematical morphological transformation to the voltage waveforms of the power grid and extracting the corresponding form characteristic curve of the power grid; inputting the form characteristic curve of the power grid to a nerve network and judging the load status of the running power grid; and utilizing the load status information of the power grid, as well as the peak-valley progressive pricing and the charging requirement of users, to draw up the charge-discharge control strategy. According to the invention, the electric vehicle and the intelligent power grid are integrated to improve the charging economical efficiency and convenience for electric vehicle users; the running efficiency of the power grid is improved through intelligent charging management of the electric vehicle; and besides, the invention has significance on scientifically and reasonably planning the construction of charging facilities and distribution networks, reducing the construction investment on construction of the distribution networks, which is caused by large-scale electric vehicle charging, improving the facility utilization ratio and improving the economical efficiency in construction of the charging facilities.

Description

Technical field: [0001] The invention relates to the field of electric vehicle charging, in particular to an electric vehicle intelligent charging and discharging control method. Background technique: [0002] The National 863 Program's major electric vehicle project has played a major role in promoting the development of electric vehicles. After the large-scale development of electric vehicles, new requirements will inevitably be put forward for the construction of charging facilities and supporting power grids. Under the current construction situation of the national grid, a large number of electric vehicles are charged at the same time, which will cause excessive power load and the capacity of the grid cannot meet the requirements. Utilizing the control strategy of peak-valley electricity price difference, users are encouraged to charge electric vehicles during the low load period of the grid, and discharge the electric vehicle battery to the grid during the peak load pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J7/02
Inventor 严辉谢添卉李武峰崔宇李晓强
Owner BEIJING STATE GRID PURUI EXTRA HIGH VOLTAGE POWER TRANSMISSION TECH CO LTD
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