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Smart Transmission Expansion Planning Based on the System Requirements: A Comparative Study with Unconventional Lines

Author

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  • Bhuban Dhamala

    (Zero Emission, Realization of Optimized Energy Systems (ZEROES) Laboratory, Department of Electrical and Computer Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA)

  • Mona Ghassemi

    (Zero Emission, Realization of Optimized Energy Systems (ZEROES) Laboratory, Department of Electrical and Computer Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA)

Abstract

This paper introduces a new concept in transmission expansion planning based on unconventional lines, termed “smart transmission expansion planning”. Traditionally, the domains of transmission expansion planning (TEP) and transmission line design are separate entities. TEP planners typically rely on the electrical specifications of a limited set of standard conventional line designs to evaluate planning scenarios, ultimately leading to the construction of the selected candidate line. In this context, it is noted that cost-effective scenarios often diverge from meeting the technical criteria of load flow analysis. To address this discrepancy, this paper proposes an alternative approach wherein TEP is conducted based on the specific requirements of the system earmarked for expansion. The transmission expansion planner initiates the process by determining optimal line parameter values that not only meet the operational criteria but also ensure cost-effectiveness. Subsequently, a line is designed to embody these optimal parameters. A detailed comparative analysis is conducted in this study, comparing the outcomes of TEP analyses conducted with conventional lines, unconventional lines, and lines featuring optimal parameters. Through extensive load flow analysis performed under normal and all single-contingency scenarios across three distinct loading conditions (peak load, dominant load representing 60% of peak load, and light load representing 40% of peak load), the results reveal that transmission lines engineered with optimal parameters demonstrate effective operation, with fewer transmission lines required to meet identical demands compared to other approaches.

Suggested Citation

  • Bhuban Dhamala & Mona Ghassemi, 2024. "Smart Transmission Expansion Planning Based on the System Requirements: A Comparative Study with Unconventional Lines," Energies, MDPI, vol. 17(8), pages 1-14, April.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:8:p:1912-:d:1377288
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    References listed on IDEAS

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    1. Sun, Mingyang & Cremer, Jochen & Strbac, Goran, 2018. "A novel data-driven scenario generation framework for transmission expansion planning with high renewable energy penetration," Applied Energy, Elsevier, vol. 228(C), pages 546-555.
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