Abstract
To reduce the risk of voltage violation after gas station networks (GSNs) are attacked, this study investigates an inter-area mobile charging strategy of plug-in hybrid electric vehicles (PHEVs) to decrease the charging load by taking full advantage of charging resources. First, considering the location of the charging station, the waiting time, and the charging fee, an inter-area mobile charging strategy of PHEVs is proposed, and a mobile charging model of PHEVs among regions is established to relieve the charging pressure. Second, the risk index is developed to analyze the risk of voltage violation in terms of the results of probabilistic load flow (PLF). Finally, the proposed strategy is tested on a modified coastal active power distribution network, and simulation results show that the charging load of PHEVs is dispersed among regions and the risk of voltage over-limit can be reduced.
Highlights
The scale of plug-in hybrid electric vehicles (PHEVs) has developed rapidly during the past several years
Due to the coincidence of the charging peak of the electric vehicle and the daily load peak (Nafisi et al (2016b)), the surge of the PHEV charging load in the attacked area could greatly reduce the grid voltage, especially during the peak charging period. To address these problems under gas station networks (GSNs) that have been attacked, this study analyzes the risk of voltage violation while using a mobile charging strategy of regional PHEVs
There will be a new waiting time twi ait,2 calculated using the remaining working time of the charging piles and the required charging duration of PHEVs waiting in the queue in the arrival station
Summary
The scale of plug-in hybrid electric vehicles (PHEVs) has developed rapidly during the past several years. Due to the coincidence of the charging peak of the electric vehicle and the daily load peak (Nafisi et al (2016b)), the surge of the PHEV charging load in the attacked area could greatly reduce the grid voltage, especially during the peak charging period To address these problems under GSNs that have been attacked, this study analyzes the risk of voltage violation while using a mobile charging strategy of regional PHEVs. The main contributions of this study are as follows: 1) Considering the location of charging stations, waiting time, and charging fee, an inter-area mobile charging strategy of PHEVs is proposed to choose the optimal charging station.
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