Method for calculating absorptive renewable energy of electric vehicle based on off-grid micro-grid

A technology of renewable energy and electric vehicles, applied in the direction of AC network circuits, wind power generation, electrical components, etc., can solve the problems of power load growth, power grid economy, stability, safety, and high-efficiency operation impact, and achieve enhanced stability and High efficiency, minimization of operating costs, and the effect of saving investment in production

Inactive Publication Date: 2017-12-15
SOUTHEAST UNIV
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AI Technical Summary

Problems solved by technology

However, the disorderly charging of a large number of electric vehicles will lead to a rapid increase in power load, and the fluctuation characteristics of the charging location and time will have a great impact on the power grid, which will have an impact on the economical, stable, safe and efficient operation of the power grid , which is a new challenge to the construction of the power grid

Method used

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  • Method for calculating absorptive renewable energy of electric vehicle based on off-grid micro-grid
  • Method for calculating absorptive renewable energy of electric vehicle based on off-grid micro-grid
  • Method for calculating absorptive renewable energy of electric vehicle based on off-grid micro-grid

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Embodiment Construction

[0026] Such as figure 1 As shown, a calculation method for electric vehicle consumption of renewable energy based on off-grid microgrid, which includes the following steps:

[0027] (1) Initialize the system, input load parameters and renewable energy output data, renewable energy includes photovoltaic and wind power;

[0028] (2) Establishing a distributed power output model: the micro-grid distributed power in the present invention includes photovoltaic cells (PV), wind power generators (WT), micro gas turbines (MT), fuel cells (FC), and storage batteries (BAT), The output model is established according to the output characteristics of each distributed power supply.

[0029] a. Photovoltaic cell output model

[0030] In a photovoltaic power generation system, the expression of its output power is:

[0031] P V =ηSI(1-0.05(t 0 +25))

[0032] Wherein: η is the conversion efficiency of photovoltaic cell array, and S is array area, and I is solar radiation, t 0 is the air...

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Abstract

The present invention discloses a method for calculating absorptive renewable energy of electric vehicle based on off-grid micro-grid. According to the invention, an electric vehicle is taken as an active load, and a micro-grid model is proposed which comprises a photovoltaic cell, a wind turbine, a micro gas turbine, a fuel cell, a power storage battery, an electric vehicle and a normal load. Through the utilization of the model, the optimal running strategy and the machine group combination are solved so as to realize the minimization of running cost. The micro grid scheduling strategy proposed by the invention allows the access of an electric vehicle and the usage of renewable sources, which can not only save the investment funds into the micro grid and the running and maintaining cost, but can also reduce environmental pollution. In addition, the method can make full use of the electric vehicle as the main load to cut the peak to fill the valley, therefore, making the micro grid more economic.

Description

technical field [0001] The invention relates to the field of power system microgrids, in particular to a calculation method for electric vehicles to absorb renewable energy based on off-grid microgrids. Background technique [0002] At present, the construction of my country's smart grid has entered the right track, and smart grid technology has created good conditions for the access of various distributed energy sources and the implementation of demand response. Micro-grid technology can effectively integrate new energy and renewable energy power generation. New energy and renewable energy can be organically combined through micro-grid technology and traditional power generation methods to complement and support each other to provide power to users. The development of smart grid technology has also driven demand response to achieve two-way interaction and efficient power consumption. With the rapid development of two-way intelligent power consumption technology, the rapid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/381H02J2203/20Y02E10/76
Inventor 李扬周晓薇陈昕儒宋天立
Owner SOUTHEAST UNIV
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