Smart-Grid Electricity Allocation via Strip Packing with Slicing

  • Soroush Alamdari
  • Therese Biedl
  • Timothy M. Chan
  • Elyot Grant
  • Krishnam Raju Jampani
  • Srinivasan Keshav
  • Anna Lubiw
  • Vinayak Pathak
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8037)

Abstract

One advantage of smart grids is that they can reduce the peak load by distributing electricity-demands over multiple short intervals. Finding a schedule that minimizes the peak load corresponds to a variant of a strip packing problem. Normally, for strip packing problems, a given set of axis-aligned rectangles must be packed into a fixed-width strip, and the goal is to minimize the height of the strip. The electricity-allocation application can be modelled as strip packing with slicing: each rectangle may be cut vertically into multiple slices and the slices may be packed into the strip as individual pieces. The stacking constraint forbids solutions in which a vertical line intersects two slices of the same rectangle.

We give a fully polynomial time approximation scheme for this problem, as well as a practical polynomial time algorithm that slices each rectangle at most once and yields a solution of height at most 5/3 times the optimal height.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Soroush Alamdari
    • 1
  • Therese Biedl
    • 1
  • Timothy M. Chan
    • 1
  • Elyot Grant
    • 2
  • Krishnam Raju Jampani
    • 3
  • Srinivasan Keshav
    • 1
  • Anna Lubiw
    • 1
  • Vinayak Pathak
    • 1
  1. 1.Cheriton School of Computer ScienceUniversity of WaterlooWaterlooCanada
  2. 2.Massachusetts Institute of TechnologyCambridgeUSA
  3. 3.University of GuelphGuelphCanada

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