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Minimization of Transmission Line Losses Through System Topology Reconfiguration

Author

Listed:
  • David Orbea

    (Master’s Program in Electricity, Salesian Polytechnic University, Quito EC170702, Ecuador)

  • Diego Carrión

    (Smart Grid Research Group—GIREI (Spanish Acronym), Electrical Engineering Deparment, Salesian Polytechnic University, Quito EC170702, Ecuador)

  • Manuel Jaramillo

    (Smart Grid Research Group—GIREI (Spanish Acronym), Electrical Engineering Deparment, Salesian Polytechnic University, Quito EC170702, Ecuador)

Abstract

This research proposes a methodology for minimizing losses in transmission lines (TLs), considering the reconfiguration of the architecture of the electrical power system (EPS). The implementation of this methodology redirects the power flow with optimal switching through its TL to guarantee the stability of the voltage, angle, frequency, and power balance in order to minimize losses that affect the reliability and quality of the system. Optimal transmission switching (OTS) allows various types of analysis to be carried out; the loadability of the lines, response times, and operating costs, among other aspects, can be improved. This article proposes minimizing the losses in the transmission lines with OTS by using AC power flows as a mixed-integer nonlinear problem (MINLP). Several test scenarios evaluate the method’s effectiveness, determining the optimal topology for corrective control that optimizes power flows in different situations. It is proven that this approach reduces losses compared to a base case by 99%, even in the face of N − 1 or random contingencies, without losing the load and while maintaining the same active power dispatch and, finally, verifying a strategic increase in the dispatch of reactive power to maintain operating parameters within stable limits.

Suggested Citation

  • David Orbea & Diego Carrión & Manuel Jaramillo, 2025. "Minimization of Transmission Line Losses Through System Topology Reconfiguration," Energies, MDPI, vol. 18(8), pages 1-19, April.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:8:p:2063-:d:1636559
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    References listed on IDEAS

    as
    1. Alex Chamba & Carlos Barrera-Singaña & Hugo Arcos, 2023. "Optimal Reactive Power Dispatch in Electric Transmission Systems Using the Multi-Agent Model with Volt-VAR Control," Energies, MDPI, vol. 16(13), pages 1-25, June.
    2. Mohseni-Bonab, Seyed Masoud & Kamwa, Innocent & Rabiee, Abbas & Chung, C.Y., 2022. "Stochastic optimal transmission Switching: A novel approach to enhance power grid security margins through vulnerability mitigation under renewables uncertainties," Applied Energy, Elsevier, vol. 305(C).
    3. Paul Masache & Diego Carrión & Jorge Cárdenas, 2021. "Optimal Transmission Line Switching to Improve the Reliability of the Power System Considering AC Power Flows," Energies, MDPI, vol. 14(11), pages 1-17, June.
    4. Diego Romero & Diego Carrión & Manuel Jaramillo, 2024. "Electrical Power Systems Reinforcement through Overall Contingency Index Analysis and Improvement," Energies, MDPI, vol. 17(11), pages 1-15, May.
    Full references (including those not matched with items on IDEAS)

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