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Three-Phase Unbalance Improvement for Distribution Systems Based on the Particle Swarm Current Injection Algorithm

Author

Listed:
  • Chien-Kuo Chang

    (Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan)

  • Shih-Tang Cheng

    (Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan)

  • Bharath-Kumar Boyanapalli

    (Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan)

Abstract

The aim of this study is to improve the three-phase unbalanced voltage at the secondary side of a distribution transformer. The proposed method involves compensation sources injecting three different single-phase currents into the connected point of a grid. The computations of optimal single-phase currents are performed using the circuit analysis method and particle swarm optimization algorithm. An unbalanced three-phase power distribution system model is constructed, including a transformer Δ–Δ connection, V–V connection, load balance, load unbalance combination, and three single-phase compensation current sources. The results show that the voltage unbalance rate of the electricity user side is improved to less than 1%, and the three-phase total compensation apparent power is approximately 0 VA. In the future, the application of the model as an auxiliary service could be achieved by adding an energy storage system.

Suggested Citation

  • Chien-Kuo Chang & Shih-Tang Cheng & Bharath-Kumar Boyanapalli, 2022. "Three-Phase Unbalance Improvement for Distribution Systems Based on the Particle Swarm Current Injection Algorithm," Energies, MDPI, vol. 15(9), pages 1-16, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:9:p:3460-:d:811702
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    References listed on IDEAS

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    1. Yih-Der Lee & Jheng-Lun Jiang & Yuan-Hsiang Ho & Wei-Chen Lin & Hsin-Ching Chih & Wei-Tzer Huang, 2020. "Neutral Current Reduction in Three-Phase Four-Wire Distribution Feeders by Optimal Phase Arrangement Based on a Full-Scale Net Load Model Derived from the FTU Data," Energies, MDPI, vol. 13(7), pages 1-20, April.
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