Optimal Power Flow on DC Microgrids: A Quadratic Convex Approximation

Date
2019
Author
Montoya O.D.
Gil-Gonzalez W.
Garces A.
University
Universidad Tecnológica de Bolívar
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Abstract
This express brief shows a convex quadratic approximation for the optimal power flow (OPF) in direct-current microgrids (dc-μ Grid) via Taylor's series expansion. This approach can be used for solving OPF problems on radial and meshed dc-μ Grids with multiple constant power terminals, allowing to cover a wide range of configurations. Two test dc-μ Grids with 10 and 21 nodes were used to validate the proposed model. Nonlinear large-scale solvers were employed to compare the proposed linearization with the conventional nonlinear nonconvex model. © 2004-2012 IEEE.
Manuscript received June 20, 2018; revised August 10, 2018; accepted September 7, 2018. Date of publication September 20, 2018; date of current version May 28, 2019. This work was supported by the National Scholarship Program Doctorates of the Administrative Department of Science, Technology and Innovation of Colombia (COLCIENCIAS) under Grant 727-2015. This brief was recommended by Associate Editor Y.-M. Chen. (Corresponding author: Oscar Danilo Montoya.) O. D. Montoya is with the Program of Electric and Electronic Engineering, Universidad Tecnológica de Bolívar, Cartagena 131001, Colombia (e-mail: o.d.montoyagiraldo@ieee.org).
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