A filter-less robust controller for damping SSCI oscillations in wind power plants

• Published in: 2017 IEEE Power & Energy Society General Meeting p. 1
• Main Authors: Nia, Hamed Khalili, Salehi, Farshid, Sahni, Mandhir, Karnik, Neeraj, Yin, Haiping
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.07.2017
• Subjects: Damping; Doubly-fed induction generator (DFIG); Indexes; Integrated circuits; Power systems; Resonance mitigation; series compensation; subsynchronous control interactions (SSCI); subsynchronous resonance (SSR); Time-domain analysis; Time-frequency analysis
• ISSN: 1944-9933
• DOI: 10.1109/PESGM.2017.8274466

SSCI oscillations in wind power plants connected to series compensated networks has been the subject of significant research over the last decade. A major portion of this research has focused on methodologies to adequately characterize the SSCI issue and mitigate the same predominantly via turbine level controller augmentation solutions. In this paper, a filter-less robust damping controller named Power System Sub-synchronous Oscillation Damper (PSSOD) is proposed for mitigating SSCI concerns for wind power plants. An active filter-less controller design that presents low impedance in the entire sub-synchronous frequency range and high impedance at the nominal 60Hz frequency is presented. Frequency scan and time domain based simulations have been used across a wide range of operating conditions to underline the robustness and effectiveness of the PSSOD in terms of SSCI mitigation.