Avoiding overages by deferred aggregate demand for PEV charging on the smart grid

G. Pang, G. Kesidis, T. Konstantopoulos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

We model the aggregate overnight demand for electricity by a large community of (possibly hybrid) plug-in electric vehicles (PEVs) each of whose power demand follows a prescribed profile and is interruptible. The community is served by a regional electrical utility which is assumed to purchase electricity from a state/national distribution grid according to a flat-rate Φ per kilowatt-unit-time up to a threshold L, and thereafter overage (demand > L) charges π > Φ are leveed per kilowatt-unit-time. Rather than a spot-price system for household consumers (which would necessarily need to be operated by automated means overnight when most consumers sleep), the 'grid' (regional utility) is 'smart' in that it monitors its total load and, when overages threaten, can reduce load by signaling certain consumers to interrupt charging and defer their charging load by one unit of time. In this paper, we model the uninterrupted load by a Gaussian process which we justify by means of a functional central limit theorem (FCLT). This limiting Gaussian process is the arrival process of a discrete-time queue which is used to model the (partially) interrupted and deferred load over a finite time-horizon. We can then compute the mean amount of overage at the end of this time horizon (say at 6 AM when charging is to be completed ahead of the morning commute).

Original languageEnglish (US)
Title of host publication2012 IEEE International Conference on Communications, ICC 2012
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3322-3327
Number of pages6
ISBN (Print)9781457720529
DOIs
StatePublished - Jan 1 2012
Event2012 IEEE International Conference on Communications, ICC 2012 - Ottawa, ON, Canada
Duration: Jun 10 2012Jun 15 2012

Publication series

NameIEEE International Conference on Communications
ISSN (Print)1550-3607

Other

Other2012 IEEE International Conference on Communications, ICC 2012
CountryCanada
CityOttawa, ON
Period6/10/126/15/12

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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    Pang, G., Kesidis, G., & Konstantopoulos, T. (2012). Avoiding overages by deferred aggregate demand for PEV charging on the smart grid. In 2012 IEEE International Conference on Communications, ICC 2012 (pp. 3322-3327). [6363650] (IEEE International Conference on Communications). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICC.2012.6363650