Optimal configuration method for the daily charging quantity of electric vehicles considering photovoltaic output
A technology for optimizing configuration of electric vehicles, applied in electric vehicles, photovoltaic power generation, battery circuit devices, etc., can solve the problems of increasing distribution network costs, impacting traditional distribution networks, and reducing efficiency
Active Publication Date: 2018-06-29
BEIJING JIAOTONG UNIV
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Problems solved by technology
However, photovoltaic output has large fluctuations and randomness, and photovoltaic grid-connection requires the system to have large power generation reserve capacity and transmission network capacity, which will also increase the cost of the distribution network and reduce efficiency
At the same time, the development of new energy vehicles has attracted more and more attention. The charging load has the characteristics of randomness and intermittent. Large-scale electric vehicle charging will change the current load status of the power grid and cause a certain impact on the traditional distribution network.
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Embodiment 1
[0066] Aiming at the problem of how to configure the daily charging quantity of electric vehicles under the premise of considering the user's travel demand and photovoltaic output, the present invention proposes an optimized configuration method for the daily charging quantity of electric vehicles that takes into account the photovoltaic output.
[0067] The embodiment of the present invention proposes a method for optimizing the daily charging quantity of electric vehicles that takes into account photovoltaic output, and the specific steps are as follows:
[0068] Step 1: Combine the collected vehicle travel data and perform statistics to obtain the vehicle entering time Te, leaving time Tl, and charging initial state of charge SOC ini The probability density distribution of is shown in Figure 1(a)(b)(c).
[0069] Before calculating the basic charging load Pev(t) of electric vehicles, the following assumptions must be made:
[0070] (1) The electric vehicle adopts the normal charging ...
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The invention provides an optimal configuration method of an electric vehicle daily charging number considering photovoltaic power output. According to the method, firstly a user travel demand is analyzed and an initial electric vehicle daily charging load is calculated and obtained, the classification calculation of photovoltaic is carried out to obtain different types of typical light power output, on the above basis, with the electric vehicle daily charging number as an optimal variable, with photovoltaic power output and electric vehicle daily charging load curve superposition area maximum as a target, for different types, the particle swarm optimization algorithm based on image processing is used to carry out optimal configuration solution, different types of configuration results are outputted, and then the optical configuration result of satisfied electric vehicle daily charging number in a fixed photovoltaic capacity is obtained through comprehensive consideration. According to the method, the photovoltaic power output can be utilized to a largest degree to provide electric energy for electric vehicles, and the method has a certain reference value for planning of the installation capacity of a photovoltaic power generation system and electric vehicle charging piles.
Description
Technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to an optimized configuration method for the daily charging quantity of electric vehicles that takes into account photovoltaic output. Background technique [0002] Under the dual pressure of energy crisis and environmental pollution, the concept of sustainable development has taken root in the hearts of the people, and people have begun to focus on the development of new energy. Photovoltaic power generation has achieved vigorous development due to its pollution-free and pollution-free. The photovoltaic output has greater volatility and randomness, and photovoltaic grid-connected systems require larger power generation reserve capacity and transmission network capacity, which will also increase the cost of the distribution network and reduce efficiency. At the same time, the development of new energy vehicles has also attracted more and more attention. Its charging loa...
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IPC IPC(8): H02J7/35G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06H02J7/35Y02E10/56Y02E40/70Y04S10/50
Inventor 苏粟韦香香姜久春何洛滨童亦斌
Owner BEIJING JIAOTONG UNIV