Grid Impact Analysis of Heavy-Duty Electric Vehicle Charging Stations: Preprint

Xiangqi Zhu, Barry Mather, Partha Mishra

Research output: Contribution to conferencePaper


This paper presents a grid impact analysis of heavy-duty electric vehicle (EV) charging stations. In this paper, heavy-duty EVs have battery capacities high enough to provide a range of 250–500 miles on a single charge, such as long-haul trucks. Heavy-duty EVs will require extremely fast charging rates to reduce charging time and will induce very high charging loads (at the multiple-megawatt scale) if several vehicles charge at the same time. Therefore, analysis is needed to understand the impact of charging station loads on the electric power grid and set the baseline for developing mitigation plans and necessary system upgrades. We develop a systematic procedure to analyze the potential impact of the placement of charging stations on the grid. Charging load is modeled using a DC fast-charging station model. A voltage load sensitivity matrix approach is leveraged to investigate the challenges of placing charging stations on the feeder. Given the charging load profiles and suggested charging station locations, time-series simulations are performed on various connection points on the feeder to understand their impact. The analysis is performed on both the IEEE 34-bus system and a realistic feeder from California. Initial mitigation solutions are developed based on insights from this analysis.
Original languageAmerican English
Number of pages8
StatePublished - 2020
Event2020 IEEE Conference on Innovative Smart Grid Technologies (IEEE ISGT) - Washington, D.C.
Duration: 17 Feb 202020 Feb 2020


Conference2020 IEEE Conference on Innovative Smart Grid Technologies (IEEE ISGT)
CityWashington, D.C.

Bibliographical note

See NREL/CP-5D00-77388 for paper as published in IEEE proceedings

NREL Publication Number

  • NREL/CP-5D00-74838


  • charging station
  • distribution feeder
  • grid impact
  • heavy-duty EV


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