Method of calculating charging load distribution of electric cars in power distribution network

A technology for electric vehicles and calculation methods, which is applied to electric vehicles, charging stations for charging mobile devices, battery circuit devices, etc., can solve the problem of not maximizing the value of orderly charging management, and achieve the effect of orderly management.

Inactive Publication Date: 2018-09-04
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

These deficiencies prevent existing methods from maximizing the value brought by orderly charge management

Method used

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  • Method of calculating charging load distribution of electric cars in power distribution network
  • Method of calculating charging load distribution of electric cars in power distribution network
  • Method of calculating charging load distribution of electric cars in power distribution network

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[0039] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.

[0040] Such as figure 1 As shown, here it is assumed that there are k=2 electric vehicle charging stations in a distribution network, numbered 1 and 2 respectively. That is, K=(1, 2). A dispatch cycle Δt in the distribution network is 15 minutes. One charging power P_charge=3kW. These data are predetermined in the distribution network. The current time t=10:00, that is, 10 o'clock in the morning. Now the distribution network scheduling requires two charging stations to upload data reflecting charging information in order to calculate the charging power P allowed by the...

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Abstract

The invention provides a method of calculating charging load distribution of electric cars in a power distribution network. The method includes three links: a link of designing upload data of chargingstations, a link of a command for scheduling and calculation of charging power for the power distribution network, and a link that each charging station distributes charging power, wherein in the link of designing upload data of charging stations: single electric car charging scheme margin and charging station charging scheme margin are defined and are fitted into a quadratic curve, and then quadratic curve coefficients a, b and c, the number of electric cars in the charging stations, and the top and bottom limitation of charging power are obtained, and then the quadratic curve coefficients a, b and c, the number of electric cars in the charging stations, and the top and bottom limitation of charging power form an array, and then the array is uploaded to the power distribution network forscheduling; in the link of a command for scheduling and calculation of charging power for the power distribution network, the uploaded data of each charging station is scheduled and utilized, and according to the operation management requirement of the power distribution network, such as peak load shifting, an optimization model is established to calculate the allowed charging power of each charging station, and the allowed charging power is used as a command to issue to each charging station; and in the link that each charging station distributes charging power, the charging stations performpower distribution according to the sequence, from small to large, of the charging scheme margin of each electric car to realize ordered charging management.

Description

technical field [0001] The invention belongs to the field of power system analysis and calculation, and more specifically relates to the distribution and management of electric vehicle charging loads in distribution networks. Background technique [0002] As the development direction of future automobiles, electric vehicles have attracted the attention of countries all over the world. Since around 2010, European countries have formulated various ambitious plans for the development of electric vehicles. In 2016, the German government even began to discuss a bill to eliminate all fuel vehicles by 2030. In order to get rid of dependence on oil, the United States plans to promote 14 million electric vehicles in 2020. Japan's planned electric car ownership is also as high as 13.5 million. The Chinese government has also issued a large number of guidelines and policies to encourage the development of the electric vehicle industry. [0003] The wide application of electric vehi...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J3/32
CPCH02J7/0027H02J3/32H02J2203/20
Inventor 张昌华段雪吴云峰刘群英陈树恒叶圣永罗曼
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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