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Keywords

charging facilities; acceptance capacity; instantaneous kurtosis; bisection cyclic approximation method

Abstract

Under the background of "carbon neutralization" and "carbon peak", in order to alleviate the pressure of distribution network capacity expansion caused by large‑scale electric vehicle access, a capacity evaluation method of distribution network receiving charging facilities is proposed considering instantaneous kurtosis. Firstly, the calculation models of regional existing load and charging load are established. Secondly, taking the full‑time power flow calculation results as security constraints, an acceptance capacity evaluation method based on bisection cyclic approximation method is proposed. Finally the maximum acceptance capacity is calculated by the method. In the case study, the acceptance capacity of charging facilities under different distribution network scenarios is solved through evaluating the influence of different load interaction characteristics on the acceptance capacity by instantaneous kurtosis. The results show that the proposed method can improve the utilization of distribution network capacity resources and reduce unnecessary capacity expansion requirements.

DOI

10.19781/j.issn.1673-9140.2023.03.008

First Page

76

Last Page

83

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