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A Four-Winding Inductive Filtering Transformer to Enhance Power Quality in a High-Voltage Distribution Network Supplying Nonlinear Loads

Author

Listed:
  • Yuehui Chen

    (State Grid Hunan Electric Power Company, Changsha 410012, China)

  • Zhao Huang

    (The College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

  • Zhenfeng Duan

    (State Grid Hunan Electric Power Company, Changsha 410012, China)

  • Pengwu Fu

    (State Grid Hunan Electric Power Company, Changsha 410012, China)

  • Guandong Zhou

    (State Grid Hunan Electric Power Company, Changsha 410012, China)

  • Longfu Luo

    (The College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

Abstract

This paper solves the problem of reactive power and harmonics compensation in a high-voltage (HV) distribution network supplying nonlinear loads. An inductive filtering (IF) approach where passive filters connect to the filtering winding of a four-winding inductive filtering transformer (FW-IFT) is presented to enhance the power quality of the public grid. This method can not only greatly suppress harmonic currents of the medium and/or low-voltage (LV) side, but also prevent them from flowing into the public grid. The new main circuit topology, where the FW-IFT has specific filtering winding by adopting the ampere-turn balance of the transformer, is presented. On the basis of the structure of the FW-IFT, the magnetic potential balanced equation and inductive filtering technology, its equivalent circuit and mathematical model are established, and the filtering performances are analyzed in detail. Simulation and experimental results rated at SN-10/0.38 of the FW-IFT are presented to prove the efficacy of the comprehensive enhancement of power quality on the grid side.

Suggested Citation

  • Yuehui Chen & Zhao Huang & Zhenfeng Duan & Pengwu Fu & Guandong Zhou & Longfu Luo, 2019. "A Four-Winding Inductive Filtering Transformer to Enhance Power Quality in a High-Voltage Distribution Network Supplying Nonlinear Loads," Energies, MDPI, vol. 12(10), pages 1-13, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:10:p:2021-:d:234567
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    Citations

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    Cited by:

    1. Elzbieta Lesniewska & Jan Olak, 2022. "Analysis of the Operation of Cascade Current Transformers for Measurements of Short-Circuit Currents with a Non-Periodic Component with a Large Time Constant of Its Decay," Energies, MDPI, vol. 15(8), pages 1-14, April.
    2. Elzbieta Lesniewska, 2022. "Modern Methods of Construction Problem Solving in Designing Various Types of Instrument Transformers," Energies, MDPI, vol. 15(21), pages 1-26, November.
    3. Elzbieta Lesniewska & Michal Kaczmarek & Ernest Stano, 2020. "3D Electromagnetic Field Analysis Applied to Evaluate the Accuracy of a Voltage Transformer under Distorted Voltage," Energies, MDPI, vol. 14(1), pages 1-16, December.
    4. Hongbo Cao & Faqiang Wang, 2023. "An Overview of Complex Instability Behaviors Induced by Nonlinearity of Power Electronic Systems with Memristive Load," Energies, MDPI, vol. 16(6), pages 1-25, March.

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