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This paper presents an innovative optimization of the IEEE 62-Bus electrical system by integrating Optimal Transmission Switching (OTS) and large-scale photovoltaic (PV) generation. The proposed methodology employs AC Optimal Power Flow, the Hungarian assignment method, and advanced computational tools (GAMS, HOMER Pro) to analyze three operational scenarios: (1) base case, (2) OTS without PV, and (3) OTS with ten PV plants totaling 357 MW. The integration of PV and OTS yields significant improvements: transmission losses are reduced by 29% (from 45.2 MW to 32.1 MW), angular stability is enhanced (maximum bus angle difference drops from 12.4 \(^\circ \) to 7.6 \(^\circ \) ), and the output of conventional generators is decreased, leading to lower operational costs and emissions. The study demonstrates that PV integration, combined with OTS, mitigates desynchronization risks and contributes to a more resilient, sustainable power system. This work provides a scalable and replicable framework for future grid planning, especially relevant for countries aiming for high renewable energy penetration and decarbonization.

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Transmission Loss Mitigation and Angular Margins Enhancement via OTS and PV in the IEEE 62-Bus Benchmark

  • 会议论文

  • 发表日期：

    2026年

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  • Paul Masache,
  • Carlos Albuja,
  • Washington Freire,
  • Evelin Masache

摘要

This paper presents an innovative optimization of the IEEE 62-Bus electrical system by integrating Optimal Transmission Switching (OTS) and large-scale photovoltaic (PV) generation. The proposed methodology employs AC Optimal Power Flow, the Hungarian assignment method, and advanced computational tools (GAMS, HOMER Pro) to analyze three operational scenarios: (1) base case, (2) OTS without PV, and (3) OTS with ten PV plants totaling 357 MW. The integration of PV and OTS yields significant improvements: transmission losses are reduced by 29% (from 45.2 MW to 32.1 MW), angular stability is enhanced (maximum bus angle difference drops from 12.4 \(^\circ \) to 7.6 \(^\circ \) ), and the output of conventional generators is decreased, leading to lower operational costs and emissions. The study demonstrates that PV integration, combined with OTS, mitigates desynchronization risks and contributes to a more resilient, sustainable power system. This work provides a scalable and replicable framework for future grid planning, especially relevant for countries aiming for high renewable energy penetration and decarbonization.