Modeling of Electric Vehicle Charging Systems in Communications Enabled Smart Grids
- Authors
- Baek, Seung Jun; Kim, Daehee; Oh, Seong-Jun; Jun, Jong-Arm
- Issue Date
- 8월-2011
- Publisher
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
- Keywords
- queuing systems; time-scale decomposition; quality of service; plug-in hybrid electric vehicles
- Citation
- IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, v.E94D, no.8, pp.1708 - 1711
- Indexed
- SCOPUS
- Journal Title
- IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS
- Volume
- E94D
- Number
- 8
- Start Page
- 1708
- End Page
- 1711
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/111906
- DOI
- 10.1587/transinf.E94.D.1708
- ISSN
- 1745-1361
- Abstract
- We consider a queuing model with applications to electric vehicle (EV) charging systems in smart grids. We adopt a scheme where an Electric Service Company (ESCo) broadcasts a one bit signal to EVs, possibly indicating 'on-peak' periods during which electricity cost is high. EVs randomly suspend/resume charging based on the signal. To model the dynamics of EVs we propose an M/M/infinity queue with random interruptions, and analyze the dynamics using time-scale decomposition. There exists a trade-off: one may postpone charging activity to 'off-peak' periods during which electricity cost is cheaper, however this incurs extra delay in completion of charging. Using our model we characterize achievable trade-offs between the mean cost and delay perceived by users. Next we consider a scenario where EVs respond to the signal based on the individual loads. Simulation results show that peak electricity demand can be reduced if EVs carrying higher loads are less sensitive to the signal.
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Collections - Graduate School > Department of Computer Science and Engineering > 1. Journal Articles
- School of Cyber Security > Department of Information Security > 1. Journal Articles
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