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arXiv 1401.1876eess.SYcs.SY
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最优功率流问题的等价松弛方法

Equivalent relaxations of optimal power flow

California Institute of Technology(加州理工学院)

Subhonmesh Bose, Steven H. Low, Thanchanok Teeraratkul, Babak Hassibi

AI总结:

本文研究了最优功率流问题的三种凸松弛方法,证明了它们在径向网络中等价,在网格网络中则存在松弛程度与计算复杂度的平衡。

摘要:

本文研究了最优功率流问题的三种凸松弛方法,证明了它们在径向网络中等价,在网格网络中则存在松弛程度与计算复杂度的平衡。

英文摘要:

Several convex relaxations of the optimal power flow (OPF) problem have recently been developed using both bus injection models and branch flow models. In this paper, we prove relations among three convex relaxations: a semidefinite relaxation that computes a full matrix, a chordal relaxation based on a chordal extension of the network graph, and a second-order cone relaxation that computes the smallest partial matrix. We prove a bijection between the feasible sets of the OPF in the bus injection model and the branch flow model, establishing the equivalence of these two models and their second-order cone relaxations. Our results imply that, for radial networks, all these relaxations are equivalent and one should always solve the second-order cone relaxation. For mesh networks, the semidefinite relaxation is tighter than the second-order cone relaxation but requires a heavier computational effort, and the chordal relaxation strikes a good balance. Simulations are used to illustrate these results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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