RT Journal Article
T1 Tight big-Ms for optimal transmission switching
A1 Pineda-Morente, Salvador
A1 Morales-González, Juan Miguel
A1 Porras, Álvaro
A1 Domínguez, Concepción
K1 Conmutación (Electricidad)
K1 Conmutación, Teoría de
AB This paper addresses the Optimal Transmission Switching (OTS) problem in electricity networks, which aims to find an optimal power grid topology that minimizes system operation costs while satisfying physical and operational constraints. Existing methods typically convert the OTS problem into a Mixed-Integer Linear Program (MILP) using big-M constants. However, the computational performance of these approaches relies significantly on the tightness of these big-Ms. In this paper, we propose an iterative tightening strategy to strengthen the big-Ms by efficiently solving a series of bounding problems that account for the economics of the OTS objective function through an upper-bound on the generating cost. We also discuss how the performance of the proposed tightening strategy is enhanced if reduced line capacities are considered. Using the 118-bus test system we demonstrate that the proposed methodology outperforms existing approaches, offering tighter bounds and significantly reducing the computational burden of the OTS problem.
PB Elsevier
YR 2024
FD 2024
LK https://hdl.handle.net/10630/31793
UL https://hdl.handle.net/10630/31793
LA eng
NO Salvador Pineda, Juan Miguel Morales, Álvaro Porras, Concepción Domínguez, Tight big-Ms for Optimal Transmission Switching, Electric Power Systems Research, Volume 234, 2024, 110620, ISSN 0378-7796, https://doi.org/10.1016/j.epsr.2024.110620
NO Funding for open access charge: Universidad de Málaga / CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026