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In order to ensure a stable power supply and meet the development needs of the power market, the Unified Power Quality Controller (UPQC) device has quickly attracted the attention of experts in the field of electric power. In this paper, the topology of UPQC, the model of the series and parallel parts of UPQC, and its power flow are introduced. The command signal detection method based on the Resonant Attenuation Principle (RAC) and the ip-iq detection method based on the instantaneous reactive power theory are discussed and analyzed. The two controllers were used for analysis and the selection of suitable controllers for the series-parallel portions. Finally, simulations are carried out to simulate voltage drops, rises, current distortions and other working conditions to verify the effectiveness of the UPQC model for improving power quality.

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Unify the Research and Design of Power Quality Regulators

  • 会议论文

  • 发表日期：

    2025年

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  • Yaoyao Qin,
  • Chen Lei,
  • Liping He,
  • Longjing Liu

摘要

In order to ensure a stable power supply and meet the development needs of the power market, the Unified Power Quality Controller (UPQC) device has quickly attracted the attention of experts in the field of electric power. In this paper, the topology of UPQC, the model of the series and parallel parts of UPQC, and its power flow are introduced. The command signal detection method based on the Resonant Attenuation Principle (RAC) and the ip-iq detection method based on the instantaneous reactive power theory are discussed and analyzed. The two controllers were used for analysis and the selection of suitable controllers for the series-parallel portions. Finally, simulations are carried out to simulate voltage drops, rises, current distortions and other working conditions to verify the effectiveness of the UPQC model for improving power quality.