Research on the Coordinated Recovery Strategy Based on Centralized Electric Vehicle Charging Station

Menghao Wen, Huabo Shi, Baohong Li (), Qin Jiang, Tianqi Liu and Chaofan Ding
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Menghao Wen: College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China
Huabo Shi: Power Internet of Things Key Laboratory of Sichuan Province, Chengdu 610072, China
Baohong Li: College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China
Qin Jiang: College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China
Tianqi Liu: College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China
Chaofan Ding: College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China

Energies, 2023, vol. 16, issue 14, 1-18

Abstract: Electric vehicles have become a crucial component of modern power systems, possessing substantial energy reserves that can be important power supplies in blackouts where the power grid has weak reserves or limited connections to other grids. In order to clarify the technical conditions and control methods of the centralized electric vehicle charging station as the black-start power source of the power grid, assuming that the centralized electric vehicle charging station can be considered a single, large-scale energy storage system, this paper proposes a three-stage coordinated recovery strategy based on the centralized electric vehicle charging station. The strategy involves three distinct stages, beginning with the establishment of AC frequency and voltage by the electric vehicle charging station to initiate the auxiliary load of the power plant. In the middle stage, considering the traditional generator has been connected, the charging station’s control mode is set to provide constant active and reactive power output, providing extra voltage and frequency support to the grid-connected generating units and crucial loads. Finally, in the later stage, control strategies are tailored to the charging power stations’ capacities, with one group of additional oscillation damping controllers, while the other group adopts additional frequency control to decrease power disturbances, ensuring a smooth recovery of the power grid. A PSCAD/EMTDC-based model was constructed to verify the proposed coordinated grid recovery strategies. The results demonstrated that the centralized station successfully established the voltage and frequency of the AC system, and the designed additional controller also made the recovery process much more stable.

Keywords: electric vehicle charging station; black start; coordinated control; additional frequency control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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