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A Smart Charging Strategy for Electric Vehicles in Constrained Distribution Network
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DOI：10.1109/TIV.2026.3690683.png)
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Abstract
En 中文
Uncontrolled charging of EVs can result in an increased peak demand, exceeding distribution system loading limit, and deterioration of voltage profile in the distribution system. Therefore, to address the issues of increase in peak demand, overshooting of contracted load, and feeders current limit violation, a hybrid charging strategy is proposed in this paper which offers the benefits of centralized charging and decentralized charging strategy while overcoming their limitations when used individually. In the proposed hybrid hierarchical charging strategy, area control at distribution substation level and local control at individual residence is implemented. The proposed strategy is less communication dependent and computationally distributed, whereas the EV user data is transformed into priority factor while limiting the system’s peak demand and the overall demand of a residential load below maximum contracted demand. The proposed strategy considers systems power injection limit to comply with the power availability of the system. The comparative analysis of the proposed hybrid charging strategy, uncontrolled charging strategy, and existing state-of-art charging strategies considering the feeder current limit violation instances and residual EV connection time are analyzed in the paper. The proposed hybrid charging strategy is implemented on a low voltage CIGRE benchmark system, modified IEEE 34 bus system, and modified IEEE 123 bus system to test its performance. The simulation results and real-time applicability of the proposed control strategy are validated using simulation platform and control hardware in loop setup.
Keywords:
Charging strategy
constrained distribution system
data confidentiality
electric vehicles
hybrid hierarchical charging
maximum connected load
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