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Optimal Phase Balancing in Electricity Distribution Feeders Using Mixed-Integer Linear Programming

Author

Listed:
  • Chia-Hung Lin

    (Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, Taiwan)

  • Te-Tien Ku

    (Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, Taiwan)

  • Chung-Sheng Li

    (Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, Taiwan)

  • Chao-Shun Chen

    (Department of Electrical Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan)

Abstract

A mixed-integer linear programming (MILP) model that includes reductions in neutral current, feeder energy-loss cost, customer interruption cost, and labor cost is developed to derive the optimal phase-swapping strategy to enhance the phase balancing of distribution feeders. The neutral current of the distribution feeder is reduced by the phase-swapping strategy so that the tripping of the low-energy overcurrent relay can be prevented and customer-service interruption costs and the labor cost to execute the phase-swapping works can be justified by the energy-loss reduction obtained. The novelty of the study is its derivation of the phase-swapping strategy using mixed-integer linear programming to solve the problem of the unbalance of the distribution feeders. A Taipower distribution feeder is used to derive the phase-swapping strategy to demonstrate the proposed MILP model for phase balancing. The comparison of the phase currents and neutral current before phase-swapping reveals that the three-phase balance was not only significantly improved, but that the voltage unbalance was also decreased dramatically using the proposed phase-swapping strategy.

Suggested Citation

  • Chia-Hung Lin & Te-Tien Ku & Chung-Sheng Li & Chao-Shun Chen, 2023. "Optimal Phase Balancing in Electricity Distribution Feeders Using Mixed-Integer Linear Programming," Sustainability, MDPI, vol. 15(5), pages 1-16, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:5:p:4473-:d:1085794
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    Cited by:

    1. Athanasios G. Lazaropoulos & Helen C. Leligou, 2024. "Integration of LiFi, BPL, and Fiber Optic Technologies in Smart Grid Backbone Networks: A Proposal for Exploiting the LiFi LED Street Lighting Networks of Power Utilities and Smart Cities," Sustainability, MDPI, vol. 16(2), pages 1-30, January.

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