Frequency Response Improvement of PMSG Wind Turbines Using a Washout Filter

Parisa M. Shabestari and Ali Mehrizi-Sani
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Parisa M. Shabestari: School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA 99164, USA
Ali Mehrizi-Sani: Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA 24061, USA

Energies, 2020, vol. 13, issue 18, 1-7

Abstract: High integration of renewable energy resources, such as wind turbines, to the power grid decreases the power system inertia. To improve the frequency response of a low-inertia system, virtual inertia approach can be used. This letter proposes a control method to decrease the frequency transients and restore frequency to its nominal value. A wind turbine usually works based on maximum power point tracking (MPPT) curves to achieve the maximum power. In this letter, the proposed controller uses a non-MPPT method to leave power for frequency regulation during transients. Moreover, it uses a washout filter-based method to remove the steady-state error in the frequency. Simulation results in the PSCAD environment validate the improved performance of the proposed method during load changes by comparing it with the MPPT and non-MPPT methods.

Keywords: control; frequency regulation; inertia support; PMSG wind turbine; washout filter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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