Method for optimizing charge and discharge power of electric car charge-storage-discharge integrated power station

A charging and discharging power, electric vehicle technology, applied in the direction of AC network load balancing, etc., can solve the problems of increasing battery loss, shortening battery life, affecting the economic operation of charging, storage and discharging stations, etc., to reduce peak-to-valley differences, reduce battery The effect of wastage costs

Active Publication Date: 2016-06-29
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +2
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Problems solved by technology

However, in the relevant research on integrated charging, storage and discharging power stations, the relevant optimization methods often only consider the evaluation of the power station's ability to provide auxiliary services such as peak regulation and frequency modulation for the power grid, ignoring the impact of frequent charging and discharging of batteries on battery life
In fact, due to the high price

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  • Method for optimizing charge and discharge power of electric car charge-storage-discharge integrated power station
  • Method for optimizing charge and discharge power of electric car charge-storage-discharge integrated power station
  • Method for optimizing charge and discharge power of electric car charge-storage-discharge integrated power station

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Embodiment Construction

[0051] The present invention will be further described below in conjunction with drawings and embodiments.

[0052] A method for optimizing the charging and discharging power of an electric vehicle charging, storage and discharging integrated power station, such as figure 1 shown, including the following steps:

[0053] 1) Determine the objective function of the integrated power station with the peak-to-valley difference of the power grid and the minimum cost of battery loss as the optimization goals;

[0054] 2) Constraints for constructing the charging and discharging power, battery capacity and reserve capacity of the integrated power station;

[0055] 3) Combining the objective function described in step 1) and the constraint conditions described in step 2), construct an optimized mathematical model, and use the particle swarm optimization algorithm to find the optimized mathematical model, and obtain the interaction between the integrated power station and the power grid a...

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Abstract

The invention provides a method for optimizing charge and discharge power of an electric car charge-storage-discharge integrated power station. The method is characterized in that the interaction power between an integrated power station and a power grid is optimized through a particle algorithm, so that the difference between peak and valley for the power grid load can be greatly reduced; and the capability that the integrated power station participates in the power grid auxiliary service has positive correlation with the capacity of a power station energy storage system, that is, the greater the capacity becomes, the greater the capability that the integrated power station participates in the power grid auxiliary service becomes, and the more significant the effect of peak clipping and valley filling becomes. The method for optimizing charge and discharge power of an electric car charge-storage-discharge integrated power station can also further reduce the cell loss cost for the charge-storage-discharge integrated power station.

Description

technical field [0001] The invention relates to the technical field of interaction between an electric vehicle and a power grid, in particular to a method for optimizing the interactive power of an integrated power station and a power grid. Background technique [0002] Electric vehicles are a research hotspot in the automobile industry, and have become the focus of attention of governments, energy manufacturers and automobile manufacturers, such as the EV Project plan in the United States and the "Ten Cities, Thousand Vehicles" plan in China. It can be expected that with the continuous improvement of battery technology and the gradual depletion of oil resources in the future, electric vehicles will gradually become popular. With the large-scale popularization of electric vehicles in the future and large-scale access to the grid for charging, due to the randomness and dispersion of charging loads, it will inevitably have a non-negligible impact on grid power generation, tran...

Claims

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Application Information

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IPC IPC(8): H02J3/32
Inventor 史乐峰刘正发何国军侯兴哲周孔均周全郑可汪会财刘永相赵杰李辉陈文礼
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST
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