Open Access

ARTICLE

Electric Vehicle Charging Capacity of Distribution Network Considering Conventional Load Composition

by Pengwei Yang¹, Yuqi Cao², Jie Tan², Junfa Chen¹, Chao Zhang¹, Yan Wang¹, Haifeng Liang^2,*

1 Zhangjiakou Power Supply Company, State Grid Jibei Power Co., Ltd., Zhangjiakou, 075000, China
2 Department of Electrical Engineering, North China Electric Power University, Baoding, 071003, China

* Corresponding Author: Haifeng Liang. Email:

Energy Engineering 2023, 120(3), 743-762. https://doi.org/10.32604/ee.2023.024128

Received 24 May 2022; Accepted 26 August 2022; Issue published 03 January 2023

Abstract

At present, the large-scale access to electric vehicles (EVs) is exerting considerable pressure on the distribution network. Hence, it is particularly important to analyze the capacity of the distribution network to accommodate EVs. To this end, we propose a method for analyzing the EV capacity of the distribution network by considering the composition of the conventional load. First, the analysis and pretreatment methods for the distribution network architecture and conventional load are proposed. Second, the charging behavior of an EV is simulated by combining the Monte Carlo method and the trip chain theory. After obtaining the temporal and spatial distribution of the EV charging load, the method of distribution according to the proportion of the same type of conventional load among the nodes is adopted to integrate the EV charging load with the conventional load of the distribution network. By adjusting the EV ownership, the EV capacity in the distribution network is analyzed and solved on the basis of the following indices: node voltage, branch current, and transformer capacity. Finally, by considering the 10-kV distribution network in some areas of an actual city as an example, we show that the proposed analysis method can obtain a more reasonable number of EVs to be accommodated in the distribution network.

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Keywords

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