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Complexity and inapproximability results for the Power Edge Set problem

Author

Listed:
  • Sonia Toubaline

    (CNRS, LAMSADE
    CNRS LIX, Ecole Polytechnique)

  • Claudia D’Ambrosio

    (CNRS LIX, Ecole Polytechnique)

  • Leo Liberti

    (CNRS LIX, Ecole Polytechnique)

  • Pierre-Louis Poirion

    (CNRS LIX, Ecole Polytechnique)

  • Baruch Schieber

    (IBM T.J. Watson Research Center)

  • Hadas Shachnai

    (Technion)

Abstract

We consider the single channel PMU placement problem called the Power Edge Set problem. In this variant of the PMU placement problem, (single channel) PMUs are placed on the edges of an electrical network. Such a PMU measures the current along the edge on which it is placed and the voltage at its two endpoints. The objective is to find the minimum placement of PMUs in the network that ensures its full observability, namely measurement of all the voltages and currents. We prove that PES is NP-hard to approximate within a factor (1.12)- $$\epsilon $$ ϵ , for any $$\epsilon > 0$$ ϵ > 0 . On the positive side we prove that PES problem is solvable in polynomial time for trees and grids.

Suggested Citation

  • Sonia Toubaline & Claudia D’Ambrosio & Leo Liberti & Pierre-Louis Poirion & Baruch Schieber & Hadas Shachnai, 2018. "Complexity and inapproximability results for the Power Edge Set problem," Journal of Combinatorial Optimization, Springer, vol. 35(3), pages 895-905, April.
    • Handle: RePEc:spr:jcomop:v:35:y:2018:i:3:d:10.1007_s10878-017-0241-y
    DOI: 10.1007/s10878-017-0241-y
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