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As offshore wind power expands, long submarine cables exacerbate harmonic issues and broadband oscillations due to complex grid impedance. While active power filters (APFs) are already set up to address harmonics in many offshore wind farms, dedicated oscillation suppression devices face spatial and cost constraints. This paper proposes a dual-function Broadband Oscillation Suppression APF (BOS-APF) using parallel SVG-like topology. It integrates harmonic mitigation (5th/7th) and oscillation suppression through multi-timescale controllers prioritizing tasks: oscillation suppression precedes harmonic filtering during transients. Electromagnetic transient simulations on a hybrid wind farm validate the solution. With harmonic injection and disturbance triggering, BOS-APF first eliminates 5th/seventh harmonics, then automatically switches to suppress oscillations when detected. This system acheives the management of multi-time-scale periodic fluctuations in offshore wind farms.

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Oscillation Suppression Active Power Filter for Power Quality Management in Offshore Wind Farms

  • 会议论文

  • 发表日期：

    2026年

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  • Zhuoyu Zhang,
  • Zhouchao Duan,
  • Jiayu Duan,
  • Tang Haiyan,
  • Xuhui Shen,
  • Beining Wang

摘要

As offshore wind power expands, long submarine cables exacerbate harmonic issues and broadband oscillations due to complex grid impedance. While active power filters (APFs) are already set up to address harmonics in many offshore wind farms, dedicated oscillation suppression devices face spatial and cost constraints. This paper proposes a dual-function Broadband Oscillation Suppression APF (BOS-APF) using parallel SVG-like topology. It integrates harmonic mitigation (5th/7th) and oscillation suppression through multi-timescale controllers prioritizing tasks: oscillation suppression precedes harmonic filtering during transients. Electromagnetic transient simulations on a hybrid wind farm validate the solution. With harmonic injection and disturbance triggering, BOS-APF first eliminates 5th/seventh harmonics, then automatically switches to suppress oscillations when detected. This system acheives the management of multi-time-scale periodic fluctuations in offshore wind farms.