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A method for site selection and maximum charging load determination of electric vehicle charging stations

An electric vehicle, maximum charging technology, applied in the direction of electric vehicle charging technology, electric vehicles, charging stations, etc., can solve problems such as not involving electric vehicles, and achieve the effect of reducing vulnerability

Active Publication Date: 2022-01-25
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] None of the above studies involved electric vehicles. As the country vigorously promotes the development of the electric vehicle industry, it can be predicted that the scale of electric vehicles connected to the distribution network will become larger and larger

Method used

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  • A method for site selection and maximum charging load determination of electric vehicle charging stations
  • A method for site selection and maximum charging load determination of electric vehicle charging stations
  • A method for site selection and maximum charging load determination of electric vehicle charging stations

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Embodiment Construction

[0044] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0045] Access with electric vehicles figure 2 The IEEE 33-node distribution network system shown as an example, figure 2 It is a standard IEEE33 node distribution network with a voltage level of 10kV, 32 branches, 5 tie switch branches, and 1 power supply. The reference voltage at the head end of the network is 12.66kV, the reference capacity is 10MVA, and the total base load power is 5084.26+j2547.32kVA.

[0046] see figure 1 , the present invention provides a method for selecting the location of an electric vehicle charging station and determining the maximum charging load, including:

[0047] Step 1: Calculate the compactness index of each node in the distribution network.

[0048] The nodes of the distribution network generally i...

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Abstract

The invention discloses a method for site selection and maximum charging load determination of an electric vehicle charging station. The vulnerability index of each node is sorted from high to low, and some high-vulnerability load nodes with higher ranking are taken as the charging sites of electric vehicles, and a reasonable charging load model of electric vehicles is selected and evenly distributed to the distribution network. Recalculating the vulnerability index verifies that the system obtains a smaller vulnerability, thereby determining the optimal allocation scheme for charging sites. On this basis, the load of the charging station is gradually increased, and the maximum load of each charging station is calculated by using the continuous power flow method, so as to obtain the maximum charging load of the electric vehicle at the station. The method of the invention can reduce the overall vulnerability of the distribution network system to a certain extent and improve the safety and stability of the system operation.

Description

technical field [0001] The invention relates to a site selection method for an electric vehicle charging station and a method for determining the maximum charging load, and belongs to the technical field of electric vehicle grid-connected operation and power system safety and stability. Background technique [0002] With the development of electric power technology, people's living standards are getting higher and higher, and all daily production and work are inseparable from electric energy. For users, the most direct contact with electric energy is through the distribution network. As a part of the power grid, the distribution network plays the role of power transmission and distribution. If the power distribution link fails, it will cause incalculable losses to national production and the national economy. Therefore, it is necessary to analyze the vulnerability of distribution network. [0003] To analyze the vulnerability of distribution network is to analyze the vulne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00B60L53/60B60L53/63B60L53/67G06Q10/04G06Q50/06
CPCH02J3/00B60L53/60B60L53/63B60L53/67G06Q10/04G06Q50/06H02J2203/10H02J2203/20Y02T10/70Y02T10/7072Y02T90/12
Inventor 李升杨锐
Owner NANJING INST OF TECH