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arXiv · 1403.3907

Truthful Mechanisms for Combinatorial AC Electric Power Allocation

Chi-Kin Chau·Khaled Elbassioni·Majid Khonji
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Abstract

Traditional studies of combinatorial auctions often only consider linear constraints (by which the demands for certain goods are limited by the corresponding supplies). The rise of smart grid presents a new class of auctions, characterized by quadratic constraints. Yu and Chau [AAMAS 13'] introduced the complex-demand knapsack problem, in which the demands are complex-valued and the capacity of supplies is described by the magnitude of total complex-valued demand. This naturally captures the power constraints in AC electric systems. In this paper, we provide a more complete study and generalize the problem to the multi-minded version, beyond the previously known 1/2-approximation algorithm for only a subclass of the problem. More precisely, we give a truthful PTAS for the case phi in [0,pi/2-delta], and a truthful FPTAS, which fully optimizes the objective function but violates the capacity constraint by at most (1+epsilon), for the case phi in (pi/2,pi-delta], where phi is the maximum angle between any two complex-valued demands and epsilon,delta>0 are arbitrarily small constants.

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Chi-Kin Chau, Khaled Elbassioni, Majid Khonji. 2014-03-16. Truthful Mechanisms for Combinatorial AC Electric Power Allocation. https://arxiv.org/abs/1403.3907

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