Electric vehicle charging and discharging optimization scheduling method based on interval constraint

An electric vehicle and optimal scheduling technology, applied in electric vehicle charging technology, electric vehicles, vehicle components, etc., can solve the problem of not being able to deal with the uncertainty of charging and discharging prices at the same time, unable to cover the difference in user behavior, etc., to achieve small load fluctuations, The effect of reducing load fluctuation and low charging and discharging cost

Pending Publication Date: 2022-08-09
TIANJIN UNIV
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Problems solved by technology

However, the above method cannot deal with the uncertainty of charging and discharging prices and user participation at the same time, and cannot cover the behavioral differences of users under changing prices.

Method used

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  • Electric vehicle charging and discharging optimization scheduling method based on interval constraint
  • Electric vehicle charging and discharging optimization scheduling method based on interval constraint
  • Electric vehicle charging and discharging optimization scheduling method based on interval constraint

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Embodiment 1

[0259] 1. Experimental Setup

[0260] In this embodiment, BYD e6 is used as the electric vehicle model, and the battery parameters are shown in Table I. The average daily driving distance of electric vehicles is set to be about 30km, the maximum driving distance is 5 times, and the average life of electric vehicles is set to be 8 years, taking ε c =5.77, the recommended minimum charging SOC is 0.2. The user's peak commute time is 7:30, 12:00 and 18:00, and other coefficients take the value β c =0.95, β d =1.05,σ tr =1.5,σ D =5,σ SOC.tr =0.1,σ SOC.in =0.1, the price coefficient γ is adjusted within the value range. load curve as figure 1 shown. In the load analysis, a cycle of 0.5h is taken, that is, k=48. Different from the load analysis, the electricity price change cycle is taken as 1h, and the total cost of charge and discharge is extended to 48 stages. In the case of 1000 electric vehicles, the NSGA-II algorithm sets the population number to 200, the iteration nu...

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Abstract

The invention discloses an electric vehicle charging and discharging optimization scheduling method based on interval constraint, and aims to process uncertainty of charging and discharging prices and user participation at the same time and reduce load fluctuation. The method comprises the following steps: step 1, establishing an electric vehicle charging price interval model; step 2, establishing an electric vehicle discharge price interval model; 3, establishing an electric vehicle user charging and discharging behavior model based on the electric vehicle charging price interval model and the electric vehicle discharging price interval model; 4, establishing an electric vehicle charging and discharging planning problem model; and 5, solving the electric vehicle charging and discharging planning problem model by using a non-dominated sorting genetic algorithm II to obtain an electric vehicle charging and discharging optimization plan. According to the method, the power grid load can be adjusted through price excitation users participating in charging and discharging scheduling, and the purposes of reducing the charging and discharging cost of the electric vehicle users and reducing load fluctuation are achieved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and more specifically, relates to an optimal scheduling method for charging and discharging of electric vehicles. Background technique [0002] In order to achieve sustainable development, reduce environmental pollution and improve energy efficiency, electric vehicles are replacing traditional fuel vehicles. V2G (short for Vehicle-to-grid) describes the relationship of electric vehicles to the grid. When the EV is not in use, the power from the onboard battery is sold to the grid. If the on-board battery needs to be charged, current flows from the grid to the vehicle. [0003] In recent years, the access of a large number of electric vehicles has had a certain impact on the power grid. It plays a dual role in the power grid. When charging, it acts as a power-consuming device in the power grid and increases the system load. When the battery is reversely discharged to the power grid, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q10/04G06Q30/02G06Q50/06H02J3/00H02J3/32H02J3/06
CPCG06Q10/0631G06Q10/04G06Q30/0283G06Q30/0206G06Q30/0207G06Q50/06H02J3/0075H02J3/008H02J3/322H02J3/06H02J2203/10H02J2203/20Y02T90/167
Inventor 葛磊蛟顾志成
Owner TIANJIN UNIV
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