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Impact of Large-Scale Mobile Electric Vehicle Charging in Smart Grids: A Reliability Perspective


Publication Year: 2021

Author(s): Xue P, Xiang Y, Gou J, Xu W, Sun W, Jiang Z, Jawad S, Zhao H, Liu J

Abstract:

The charging load of electric vehicles (EVs) is characterized by uncertainty and flexibility, which burdens the distribution network, especially when a high penetration of distributed generation (DG) in smart grids. Large-scale EV mobility integration affects smart grid operation reliability and the reliability of EV charging services. This paper aims at estimating the comprehensive impacts caused by spatial-temporal EV charging from the perspective of both electricity system reliability and EV charging service reliability. First, a comprehensive reliability index system, including two novel indexes quantifying EV charging service reliability, is proposed. Then, considering traffic constraints and users’ charging willingness, a spatial-temporal charging load model is introduced. In the coupled transportation and grid framework, the reliability impacts from plenty of operation factors are analyzed. The reliability impacts of large-scale mobile EV integration on electricity system-based sequential Monte Carlo method are discussed in this paper.  A coupled transportation grid system is adopted to demonstrate the effectiveness and practicability of the proposed method. The numerical results analyze reliability impacts from EV penetration level, trip chain, EV battery capacity, DG installation location, and capacity. The proposed studies reveal that when the EV capacity ratio to DG capacity is 3:1, the system reliability reaches the maximum level.

Source of Publication: Frontiers in Energy Research

Vol/Issue: 9, 688034: 1-17p.

DOI No.: 10.3389/fenrg.2021.688034

Publisher/Organisation: Frontiers Media S.A.

Rights: Frontiers Media S.A.

URL:
https://www.frontiersin.org/articles/10.3389/fenrg.2021.688034/full

Theme: Vehicle Technology | Subtheme: Electric vehicles

Tags: Distribution grids, Electric vehicles, Vehicle to grid (V2G), Vehicle-to-Grid, Charging load modeling, Comprehensive reliability, Distributed generation, Electric power transmission networks, Electric vehicle charging service reliability, Electric vehicle integration, Electricity system reliability, Reliability impacts, Service reliability, Transportation network, Charging (batteries)

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