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- W4387323643 abstract "Many problems in power systems involve optimizing a certain objective function subject to power flow equations and engineering constraints. A long-standing challenge in solving them is the nonconvexity of their feasible sets. In this paper, we propose an analytical method to construct the convex restriction of the feasible set for AC power flows in radial networks. The construction relies on simple geometrical ideas and is explicit, in the sense that it does not involve solving other complicated optimization problems. We also show that the construct restrictions are in some sense maximal, that is, the best possible ones. Optimization problems constrained to these sets are not only simpler to solve but also offer feasibility guarantee for the solutions to the original OPF problem. Furthermore, we present an iterative algorithm to improve on the solution quality by successively constructing a sequence of convex restricted sets and solving the optimization on them. The numerical experiments on the IEEE 123-bus distribution network show that our method finds good feasible solutions within just a few iterations and works well with various objective functions, even in situations where traditional methods fail to return a solution." @default.
- W4387323643 created "2023-10-04" @default.
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- W4387323643 date "2023-09-30" @default.
- W4387323643 modified "2023-10-14" @default.
- W4387323643 title "Convex Restriction of Feasible Sets for AC Radial Networks" @default.
- W4387323643 doi "https://doi.org/10.48550/arxiv.2310.00549" @default.
- W4387323643 hasPublicationYear "2023" @default.
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