Coordinated Control of Electric Vehicles and PV Resources in an Unbalanced Power Distribution System

Abdulrahman Almazroui and Salman Mohagheghi
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Abdulrahman Almazroui: Electrical Engineering Department, Colorado School of Mines, Golden, CO 80401, USA
Salman Mohagheghi: Electrical Engineering Department, Colorado School of Mines, Golden, CO 80401, USA

Energies, 2022, vol. 15, issue 24, 1-17

Abstract: Improving air quality, reducing greenhouse gas emissions, and achieving independence from fossil fuels have led most countries towards deploying solar photovoltaics (PV) in the power distribution grid and electrifying the transportation fleet. Internal combustion engine (ICE) vehicles are, in particular, one of the main culprits of injecting greenhouse gas emissions into the atmosphere, making electric vehicles (EVs) an important tool in combating climate change. Despite their considerable environmental and economic benefits, the integration of PVs and EVs can introduce unique operational challenges for the power distribution grid. If not coordinated, high penetration of PVs and EVs can result in variety of power quality issues, such as instances of overvoltage and undervoltage, frequency fluctuations, and/or increased losses. This paper proposes a mixed-integer multi-objective nonlinear optimization model for optimal energy dispatch in a power distribution grid with high penetration of PV and EV resources. The model proposed here is an extension of the traditional voltage and var optimization (VVO) into a comprehensive and coordinated control of voltage, active power, and reactive power. A modified version of the IEEE 123-bus test distribution system is used to demonstrate the effectiveness of the proposed solution.

Keywords: distribution grid; electric transportation; electric vehicles; reactive power control; rooftop PV; solar photovoltaics; voltage and var control; voltage and var optimization (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: 2022
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