Optimal Transmission Switching Considering N-1 Contingencies on Power Transmission Lines



optimal transmission switching, Optimal power flow, contingency analysis, economic dispatch


Optimal transmission switching allows to make different types of analysis focused on improving the functionality of electrical power systems. The implementation of this method along with contingency analysis seek to increase the flexibility of the electrical system through changes in network topology and power flow redirection. In this article, an analysis is carried out about the impact of transmission line switching in terms of loadability and voltage angles. The optimal transmission switching model used is formulated using optimal DC power flows as a mixed-integer linear program problem. The research considers simple contingencies with the loss of at least one transmission line and it contrasts the results obtained in three scenarios; without contingencies and switching actions, optimal switching without contingencies and optimal switching after a contingency has occurred. The results obtained show a small number of unviable solutions prior to the implementation of switching actions. This exposes the clear possibility of applying line switching even when a contingency has occurred without losing load and keeping costs low.


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Author Biographies

Stanislao Pinzón, Universidad Politécnica Salesiana

Stanislao Pinzón Masache is working toward his B.S degree in electrical engineering at Universidad Politécnica Salesiana, Quito – Ecuador. His research interests include economic and operational optimization in power systems, application of data analytics to power systems, smart grids and renewable energy systems.

Diego Carrión, Universidad Politécnica Salesiana

Diego Carrión Galarza received the B.S. of Electrical Engineering. He is currently working toward his Ph.D. degree in Engineering with the Universidad Pontificia Bolivariana - Colombia-Medellín, and he is Member of the GIREI Research Group. His research interest is optimal flow in electric transmission lines - smart grid. He is a professor of Universidad Politécnica Salesiana Ecuador.

Esteban Inga, Universidad Politécnica Salesiana

Esteban Inga Ortega graduated from the Universidad Politécnica Salesiana in 2002. He received his M.Ed. degree in Education and Social Development from the Equinoccial University of Technology in 2008. He obtained his M.Sc. in 2017 and his Ph.D. degree in Engineering in 2019 at the Universidad Pontificia Bolivariana, Medellin, Colombia. His research interests are green communications, advanced measurement infrastructure, smart grids, heterogeneous wireless networks, and wireless network planning. He is a professor at the Universidad Politécnica Salesiana, Ecuador and Coordinator of the GIREI Research Group.



How to Cite

Pinzón, S., Carrión, D., & Inga, E. (2021). Optimal Transmission Switching Considering N-1 Contingencies on Power Transmission Lines. IEEE Latin America Transactions, 19(4), 534–541. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/3691