Coordinated charging of plug-in electric vehicles in unbalanced three-phase residential networks with smart three-phase charger
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The penetration levels of plug-in electric vehicles (PEVs) is expected to rapidly increase within the next few years due to global trend of energy saving and environmental protection. It is well-known that uncoordinated charging of PEVs in residential distribution feeders will have significant negative impacts on grid performances causing increased losses, poor voltage regulations, network congestion and overloading of distribution transformers. Furthermore, the forthcoming smart grids will be unbalanced due to non-uniform distributions of DGs such as rooftop PVs as well as PEVs in the three phases with unpredictable charging rates, times and durations. This paper explores the detrimental impacts of random PEV charging on the distribution transformer loading and bus voltage profiles of an unbalanced smart grid. A decentralized three-phase PEV charging strategy is introduced which is capable of switching vehicle charging between the three phases based on the network data provided by the smart meters. Simulation results will be generated and analyzed for an unbalanced three-phase 62 node residential network populated with PEV chargers using Matlab/Simulink software.
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Juanuwattanakul, Parachai (2012)Voltage instabilities and subsequent system collapses are considered as growing concerns in modern multiphase distribution networks as they are progressively forced to operate closer to their stability limits due to many ...
Distribution transformer loading in unbalanced three-phase residential networks with random charging of plug-in electric vehiclesMoghbel, Moayed; Masoum, Mohammad Sherkat; Shahnia, Farhad; Moses, Paul (2012)Utilization of plug-in electric vehicles (PEVs) is gaining popularity in recent years due to the growing concerns about fuel depletion and the increasing petrol price. Random uncoordinated charging of multiple PEVs in ...
Decentralised coordinated charging of plug-in electric vehicles in unbalanced residential networks to control distribution transformer loading, voltage profile and current unbalanceMoghbel, Moayed (2012)Utilization of plug-in electric vehicles (PEVs) in residential feeders is gaining increasing popularity in recent years due to the societal awareness about greenhouse gas emission and the increasing petrol price. The ...