H∞ mixed‐sensitivity robust control design for damping low‐frequency oscillations with DFIG wind power generation. Issue 19 (9th September 2019)

• Record Type: Journal Article
• Authors: Isbeih, Younes J.; El Moursi, Mohamed Shawky; Xiao, Weidong; El‐Saadany, Ehab
• Is Part Of: IET generation, transmission & distribution. Volume 13:Issue 19(2019)
• Page Start: 4274
• Page End: 4286
• Publication Date: 2019-09-09
• Subjects: closed loop systems -- synchronous generators -- linear matrix inequalities -- power system stability -- asynchronous generators -- power system control -- oscillations -- rotors -- wind turbines -- robust control -- wind power plants -- damping -- power generation control -- control system synthesis; mixed‐sensitivity robust control design -- damping low‐frequency oscillations -- DFIG wind power generation -- damping performance -- doubly fed induction generator‐based wind power generation -- supplementary damping controller -- linear matrix inequality framework -- damping signal -- reactive power modulation -- DFIG wind turbine -- DFIG‐WT -- damping contribution -- power oscillator damper -- power system stabiliser -- synchronous generator -- state‐space system analysis -- robust performance -- H∞ mixed‐sensitivity robust control design; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2018.6433
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : This study presents a H ∞ mixed‐sensitivity robust control design to improve the overall damping performance of low‐frequency oscillations for power systems with doubly fed induction generator‐based (DFIG) wind power generation. The supplementary damping controller is designed in the linear matrix inequality framework which allows the placement of the closed‐loop poles inside a pre‐defined region for improved stability. The damping signal is implemented at the reactive power modulation of the rotor‐side converter of the DFIG wind turbine (DFIG‐WT). The damping contribution of the power oscillator damper is compared with that provided by the power system stabiliser (PSS) of the synchronous generator (SG). State‐space system analysis and time‐domain simulations show the capability of DFIG‐WT to enhance the overall damping of the oscillatory modes even if PSSs are not installed at SG s. Also, the designed controller shows a robust performance to wind speed variations. The performance evaluation is based on the revised two‐area four machines system and the revised New England 39‐bus system.