Estimating the Impact of Electric Vehicle Smart Charging on Distribution Transformer Aging

Hilshey, A. D.; Hines, Paul; Rezaei, Pooya; Dowds, Jonathan

doi:10.1109/tsg.2012.2217385

Cited by 186 publications

(101 citation statements)

References 26 publications

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“…This opens up the possibility of establishing slots [48] for charging or securing a supply for each user. In [10][11][12][16][17][18][19] it has been stated that the large-scale uncoordinated charging of EVs will increase the peak loads of power grids at rush hours and possible solutions are to reinforce the power grid or to shift the peak power demand to off-peak hours. The coordinated charging uses the load shifting or valley filling strategy, so an EV aggregator should be used.…”

Section: Understanding People's Behaviormentioning

confidence: 99%

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Designing a Sustainable University Recharge Area for Electric Vehicles: Technical and Economic Analysis

Miceli

Viola

2017

Energies

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This article addresses the technical and economic challenges regarding the design of a "green" recharge area for electric vehicles at the University of Palermo in order to reduce costs and pollution connected to the charging process. Based on the behaviour of the student population, the electrical load is identified and two possible solutions are evaluated to manage the peak load: an orientation of the panels increasing the power at defined time and the use of a storage system. The main strength and weakness points of two systems are investigated by taking into account the Levelized Cost of Energy (LCOE), which reaches 75.3 €/MWh for the orientation of panel and 103 €/MWh for the storage system. Furthermore, the cost of the topologies of power plant and the cost of energy are discussed in depth.

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Section: Understanding People's Behaviormentioning

confidence: 99%

“…The impact of EVs on the power grid is a commonly faced problem [10][11][12][13][14]. An increase in the EV diffusion can cause new peak loads in the power generating system and problems with the power dispatch and quality.…”

mentioning

confidence: 99%

Designing a Sustainable University Recharge Area for Electric Vehicles: Technical and Economic Analysis

Miceli

Viola

2017

Energies

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“…where H is the number of charging stations, Pforce_t_h is the minimum power, and Pc_max_t_h is the maximum power that station h reported at time t. The maximum charging power of a charging station is the power needed for charging when all the EVs plugged in are charging at full power; therefore, the maximum charging power of station h at time t, P c_max_t_h , is as in Equation (2): (2) where, N t_h is the number of EVs plugged in station h at time t and P rate_i is the rated charging power of EV i. In a distribution grid, there are numbers of charging stations.…”

Section: Interaction Process Of the Charging Power Of The Stationmentioning

confidence: 99%

“…The EVs' implementation on a large scale is a big challenge for the power grid. Research shows that the accumulation of uncontrolled EV loads in space and time will bring regional load imbalance and boost peak load, which will affect the load character of the grid, overload transformers and cables, generate voltage and current impacts, and infect voltage profiles and power quality [1][2][3][4]. Optimized charging management is required to maintain a fair interaction between EVs on a large scale as huge mobile distributed power sources and the grid itself are used to increase the EV access rate.…”

Section: Introductionmentioning

confidence: 99%

Aggregator-Based Interactive Charging Management System for Electric Vehicle Charging

et al. 2016

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Abstract:With the ongoing large-scale implementation of electric vehicles (EVs), the exploration of a more flexible approach to maintain fair interaction between EVs and the power grid is urgently required. This paper presents an aggregator-based interactive charging management scheme adopting interruptible load (IL) pricing, in which the EV aggregator will respond to the load control command of the grid in an EV interactive mode. Charging managements are carried out according to battery state-of-charge and the EV departure time in EV charging stations. A power-altering charging (PAC) control method is proposed to dispatch the EVs charging fairly in a station and guarantee EV owners' preferences. The method does not require classical iterative procedures or heavy computations; furthermore, it is beneficial for EVs to depart earlier than expected for reasons beyond keeping homeostatic charging. The proposed scheme, which is tested to charge individual EVs well according to its preference, was implemented as part of an "EV Beijing" project. The proposed management scheme provides new insight into EV charging strategy and provides another choice to EV users.

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“…These studies focus primarily on transformer overheating, system overloading, and ancillary services that can be provided through vehicle to grid (V2G) [5]- [9]. Existing studies fail to consider the problem of power unbalance in the distribution system however.…”

Section: Introductionmentioning

confidence: 99%

A Novel Idea for Self-Balancing Car Parks for Plug in Electric Vehicle Charging

Clarke¹,

Makram²

2014

JPEE

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Many existing studies seek to examine and mitigate possible impacts which plug in vehicle (PEV) charging will have on electric utilities. As PEVs increase in popularity, car parks will have to be built in order to allow for charging while away from home. Existing studies fail to consider the unbalance conditions in the distribution feeders to car parks during PEV charging. This paper presents an innovative idea to improve the unbalance conditions caused by a car park by reconfiguring PEV charger connections to a three-phase system. Although the developed algorithm is simple, results show its ability to balance the power among the phases. A car park is used as an example to show that balancing of the real power drawn by PEV chargers in a parking structure is a success.

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Estimating the Impact of Electric Vehicle Smart Charging on Distribution Transformer Aging

Cited by 186 publications

References 26 publications

Designing a Sustainable University Recharge Area for Electric Vehicles: Technical and Economic Analysis

Designing a Sustainable University Recharge Area for Electric Vehicles: Technical and Economic Analysis

Aggregator-Based Interactive Charging Management System for Electric Vehicle Charging

A Novel Idea for Self-Balancing Car Parks for Plug in Electric Vehicle Charging

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