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Title: Damping of Subsynchronous Resonance in a Hybrid System with a Steam-Turbine Generator and an Offshore Wind Farm Using a Unified Power-Flow Controller
Authors: Wang L.
Zeng S.-Y.
Feng W.-K.
Prokhorov A.V.
Mokhlis H.
Kein Huat C.
Tripathy, Manoj
Published in: IEEE Transactions on Industry Applications
Abstract: This article proposes a unified power-flow controller (UPFC) to suppress subsynchronous resonance occurred in a hybrid power-generation system connected to an infinite bus through a series-capacitor compensated line. The hybrid power-generation system contains a steam-turbine generator (STG) and an offshore wind farm (OWF) based on doubly-fed induction generator (DFIG). The d-q axis equivalent-circuit model under three-phase balanced loading conditions is derived to establish the complete system model including the STG set, the DFIG-based OWF, the series-capacitor compensated line, the UPFC, etc. A damping controller of the proposed UPFC is designed by using pole-assignment approach based on modal control theory to effectively damp out unstable STG modes of the studied system. Both small-signal stability and transient simulation results of the studied system are systematically performed. The simulation results show that the proposed UPFC joined with the designed damping controller can effectively suppress unstable STG modes of the studied power system. © 1972-2012 IEEE.
Citation: IEEE Transactions on Industry Applications, 57(1): 110-120
Issue Date: 2021
Publisher: Institute of Electrical and Electronics Engineers Inc.
Keywords: Doubly-fed induction generator (DFIG)
offshore wind farm (OWF)
series-capacitor compensated line
steam-turbine generator (STG)
subsynchronous resonance (SSR)
unified power-flow controller (UPFC)
ISSN: 939994
Author Scopus IDs: 57059516100
Author Affiliations: Wang, L., Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan
Zeng, S.-Y., Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan
Feng, W.-K., Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan
Prokhorov, A.V., Institute of Power Engineering, Tomsk Polytechnic University, Tomsk, Russian Federation
Mokhlis, H., Department of Electrical Engineering, University of Malaya, Kuala Lumpur, Malaysia
Kein Huat, C., Department of Electrical and Electronic Engineering, Universiti Tunku Abdul Rahman, Kajang, Malaysia
Tripathy, M., Department of Electrical Engineering, Indian Institute of Technology Roorkee, Roorkee, India
Funding Details: This work was supported in part by Higher Education Sprout Project, Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University (NCKU) National Cheng Kung University, NCKU; Kementerian Pendidikan Malaysia, KPM
Corresponding Author: Wang, L.; Department of Electrical Engineering, Taiwan; email:
Appears in Collections:Journal Publications [EE]

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