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A Framework to Evaluate the Grid Impacts of EV Fleet Charging Solutions

Conference ·
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Growing Electric vehicle (EV) adoption in residential and commercial applications is driving the need for the charging infrastructures required to fulfill the charging needs. The resulting increase in demand for electric power will add a significant load to the electric grid, which could negatively impact the grid operation. EVs are power electronic loads and draw harmonic currents which can lead to a host of power quality issues. Therefore, it is crucial to assess the grid impacts and management of EV charging loads to ensure the reliable operation of the electric grid. In this paper, we develop a framework to help determine power-quality impacts given an EV charging schedule on the system. We compare the performance of unmanaged and managed charging solutions on factors like voltage drop, flicker, harmonic distortion and the peak site load - based on the EV depot in Hazelwood school district. The results allow insights into operation and site design of EV depots.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
National Science Foundation (NSF)
DOE Contract Number:
AC36-08GO28308
OSTI ID:
1959312
Report Number(s):
NREL/CP-5D00-82723; MainId:83496; UUID:876f3ca3-920a-4e26-9e5e-4725c5a8689e; MainAdminID:68888
Resource Relation:
Conference: Presented at the 2022 North American Power Symposium (NAPS), 9-11 October 2022, Salt Lake City, Utah
Country of Publication:
United States
Language:
English

References (13)

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Power quality in distribution networks with electric vehicle charging - a research methodology based on field tests and real data conference April 2016
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Analysis of electric vehicle charging impact on the electric power grid: Based on smart grid regional demonstration project — Los Angeles conference September 2016
Review of Electric Vehicle Charging Station Location Planning conference December 2019
EV Hosting Capacity Analysis on Distribution Grids conference July 2021
Assessing the value of electric vehicle managed charging: a review of methodologies and results journal January 2022
Intelligent Parking Garage EV Charging Scheduling Considering Battery Charging Characteristic journal March 2018

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Related Subjects

ADVANCED PROPULSION SYSTEMS
POWER TRANSMISSION AND DISTRIBUTION
charging depot
electric vehicles
evaluation framework
flicker-level
grid impact
total harmonic distortion
voltage