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Decentralized Electric Vehicle Charging Coordination Method Based on Locally Measured Voltage Amplitude

An electric vehicle and voltage measurement technology, applied in electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problems of large amount of calculation and high requirements of central control station computing power, and achieve low hardware requirements and the probability of exceeding the limit of electric quantity. Low, low software and hardware requirements

Active Publication Date: 2021-04-27
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method faces the problem of large amount of calculation and high requirements for the computing power of the central control station. In recent years, the charging optimization scheme for electric vehicles has not substantially solved the problem of large amount of calculation caused by centralized control.

Method used

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  • Decentralized Electric Vehicle Charging Coordination Method Based on Locally Measured Voltage Amplitude
  • Decentralized Electric Vehicle Charging Coordination Method Based on Locally Measured Voltage Amplitude
  • Decentralized Electric Vehicle Charging Coordination Method Based on Locally Measured Voltage Amplitude

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0059] Example 1: None of the electric vehicle charging is controlled by the proposed coordinated approach, which is also the widely adopted practice, in which the electric vehicle charging starts from the moment the owner arrives until it is charged to 100%, and the charging limit of all electric vehicles is allocated grid constraints.

example 2

[0060] Example 2: Decentralized Electric Vehicle Charging Coordination Approach Without Considering IoT Parameters.

example 3

[0061] Example 3: Decentralized electric vehicle charging method based on IoT parameters.

[0062] For each instance, at least one of the seven limit-breaking situations in the network under 0%, 15%, 30%, 45%, 60%, 75%, 90% and 100% electric vehicle penetration was simulated respectively. Limit probability, the results are shown in Table 1. The first value (a) for each limit violation is the probability of violation within a day, and the second value (b) is the average duration of the violation per day (in minutes).

[0063] Table 1

[0064]

[0065] Under the same circumstances, in Example 1, when the penetration rate of electric vehicles is greater than 30%, the maximum average demand in a day does not exceed 1870Kva and the two constraints of not exceeding 110% capacity of the distribution transformer are violated. Furthermore, in Example 1, the probability of not delivering energy is always zero, because there is no charging control, and the EVs are always fully charg...

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Abstract

The invention provides a decentralized electric vehicle charging coordination method based on locally measured voltage amplitude, and belongs to the technical field of power generation, power transformation or power distribution. This method proposes an electric vehicle charging control algorithm running on the electric vehicle charging controller, and on this basis, uses new parameter optimization algorithms obtained through the Internet of Things, such as minimum power consumption time, departure and arrival time, and user priority. After the electric vehicle is charged to the minimum charging capacity, the specific charging time of the remaining charging capacity is determined according to the input data of the Internet of Things combined with the algorithm, so as to maximize the economic benefits. The invention makes it possible to charge an electric vehicle to the required charge as quickly as possible while avoiding exceeding the operating limits of the system. This method only needs to measure the local voltage amplitude at the connection point between the electric vehicle and the charging pile, and does not require communication with the central server or controller, which greatly reduces the troubles of the previous electric vehicle charging coordination method that requires a large amount of measurement data.

Description

technical field [0001] The invention discloses a decentralized electric vehicle charging coordination method based on locally measured voltage amplitude, relates to electric vehicle charging technology, and belongs to the technical field of power generation, power transformation or power distribution. Background technique [0002] With the vigorous promotion of electric vehicles, the charging of electric vehicles has become a research focus. In order to maintain the stability of the grid, it is very important to plan the charging of a large number of electric vehicles in real time economically and effectively. [0003] At present, the existing electric vehicle charging coordination methods are all based on macro-scheduling, setting up a regional or overall regional central control station, reading the charging physical information and data information of each charging station, and conducting overall planning and coordination at the central control station. This method faces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L53/62B60L53/66B60L53/14
CPCB60L53/62B60L53/66B60L53/665B60L53/14Y02T90/16Y02T10/70Y02T10/7072Y02T90/14Y02T90/12Y04S30/12Y02T90/167
Inventor 顾雅茹陈中黄学良
Owner SOUTHEAST UNIV