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The Optimization of Mechanical Phase-Shifting Transformer Tap Positions Based on an Open-Loop and Closed-Loop Hybrid Strategy

Author

Listed:
  • Jinjiao Lin

    (State Grid Jiangsu Electric Power Co., Ltd., Research Institute, Nanjing 211103, China)

  • Jingyan Du

    (School of Electrical and Power Engineering, Hohai University, Nanjing 211100, China)

  • Shi Chen

    (State Grid Jiangsu Electric Power Co., Ltd., Research Institute, Nanjing 211103, China)

  • Xinying Wang

    (School of Electrical and Power Engineering, Hohai University, Nanjing 211100, China)

  • Haodong Long

    (School of Electrical and Power Engineering, Hohai University, Nanjing 211100, China)

  • Chuyang Wang

    (School of Electrical and Power Engineering, Hohai University, Nanjing 211100, China)

Abstract

Phase-shifting transformers play a crucial role in power grid stability and efficiency. They adjust phase differences between loads, improve transmission efficiency, and balance loads during large-scale power transmission and grid integration. However, traditional mechanical phase-shifting transformers use fixed-tap designs with limited taps, preventing continuous and precise adjustments. This discrete adjustment method affects control accuracy and optimal tap position selection for proper power flow. This paper proposes a hybrid open-loop and closed-loop control strategy. This strategy maintains the phase-shifting transformer at its optimal tap position, enhancing system regulation precision and control effectiveness.

Suggested Citation

  • Jinjiao Lin & Jingyan Du & Shi Chen & Xinying Wang & Haodong Long & Chuyang Wang, 2025. "The Optimization of Mechanical Phase-Shifting Transformer Tap Positions Based on an Open-Loop and Closed-Loop Hybrid Strategy," Energies, MDPI, vol. 18(14), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:14:p:3699-:d:1700841
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