Electric vehicle group orderly charging method and distribution network power optimization method

A technology of electric vehicles and charging methods, which is applied in the direction of electric vehicle charging technology, electric vehicles, and AC networks with energy trade/energy transmission authority, which can solve the problems of distribution network loss, control difficulty, resource shortage, etc., and achieve reduction The effect of small distribution network loss, simple and fast method, and saving calculation time

Active Publication Date: 2018-12-28
ZHANGJIAKOU POWER SUPPLY COMPANY OF STATE GRID JINBEI ELECTRIC POWER COMPANY +1
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AI Technical Summary

Problems solved by technology

[0002] In recent years, the rapid development of electric vehicles has largely solved the problems of environmental pollution and resource shortage brought by the traditional automobile industry, but it has also brought some new problems, mainly including two points: 1. In the planning of traditional distribution networks It is true that little consideration is given to the charging load of electric vehicles. Therefore, when large-scale electric vehicle loads are connected to the distribution network, it will cause serious peak overlap with the basic load of residents, which will bring huge losses to the distribution network in residential areas; The charging behavior of electric vehicles is uncertain in time and space,

Method used

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  • Electric vehicle group orderly charging method and distribution network power optimization method
  • Electric vehicle group orderly charging method and distribution network power optimization method
  • Electric vehicle group orderly charging method and distribution network power optimization method

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Embodiment 1

[0045] Embodiment 1 Orderly charging method for electric vehicle groups

[0046] This embodiment 1 is based on the principle of the database, and the electric vehicle is coded 0-1. The uncharged vehicle is recorded as 0, the charged vehicle is recorded as 1, and all vehicles are recorded as 0 in the initial period. This embodiment 1 is based on the grid method and The quick sort method includes the following steps in sequence:

[0047] a1: Divide the day into N period, and predict the basic load of residents in a certain residential area, in this embodiment N=72;

[0048] a2: The redundant power between the optimal value of the active power upper limit of the distribution network in the residential area and the basic load of the residents in the tth period is equally divided into n t charging grid, please refer to figure 1 , n t The calculation expression of is as follows:

[0049]

[0050] In the formula, p lim is the optimal value of the upper limit of active po...

Embodiment 2

[0055] Example 2 Distribution Network Power Consumption Optimization Method

[0056] Select a large residential area with 5,000 households, the upper limit of active power of the distribution network is 5,500kW; each household owns one car on average, and the penetration rate of electric private cars in the residential area is 20%, that is, 1,000 electric private cars.

[0057] According to different charging methods, conventional charging and quick battery replacement, electric vehicles are divided into charging vehicles and battery-replacing vehicles. Electric private vehicles usually adopt conventional charging modes, so electric private vehicles are the charging vehicles and electric taxis in the present invention. Usually adopt battery to change mode quickly, so electric taxi is exactly the said car of changing electricity of the present invention.

[0058] The distribution network power consumption optimization method using the orderly charging method for electric vehicl...

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Abstract

The invention provides an electric vehicle group orderly charging method and a distribution network power optimization method. The electric vehicle group orderly charging method divides the redundantpower between the active power upper limit value of the distribution network and the basic load of the residents into a plurality of charging grids equally based on the grid method, and realizes the orderly charging of the electric vehicle group based on the quick sorting method. The distribution network power optimization method using the orderly charging method has the advantages that the dailyload curves of residential basic load, single load of electric vehicle and orderly charging total load of charging vehicle are fitted, and then the optimal charging scheme is selected by calculating and comparing the total load variance of distribution network and the charging cost of users when the upper limit of active power of distribution network is different. The electric vehicle group orderly charging method of the invention realizes the orderly charging of the electric vehicle, avoids the overload of the distribution network, and provides an optimal charging scheme for reducing the lossof the distribution network and the charging cost of the user. The invention is applicable to the field of electric vehicles.

Description

technical field [0001] The invention belongs to the field of electric vehicles, and relates to the field of electric vehicle group charging, in particular to an orderly charging method for electric vehicle groups and a method for optimizing power consumption of a distribution network. Background technique [0002] In recent years, the rapid development of electric vehicles has largely solved the problems of environmental pollution and resource shortage brought by the traditional automobile industry, but it has also brought some new problems, mainly including two points: 1. In the planning of traditional distribution networks It is true that little consideration is given to the charging load of electric vehicles. Therefore, when large-scale electric vehicle loads are connected to the distribution network, it will cause serious peak overlap with the basic load of residents, which will bring huge losses to the distribution network in residential areas; The charging behavior of ...

Claims

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Application Information

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IPC IPC(8): H02J3/00B60L11/18
CPCH02J3/008H02J3/003H02J2203/20Y02T90/167Y04S30/12Y02T10/70Y02T10/7072Y02T90/12Y04S30/14
Inventor 黄浦东任俊范伟强秦国强慕宗江
Owner ZHANGJIAKOU POWER SUPPLY COMPANY OF STATE GRID JINBEI ELECTRIC POWER COMPANY
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