Masayuki Watanabe, Masaru Fukushima, Tomohiro Maeda, and Yasunori Mitani
power system control, power system stabilizer, wide area phasor measurement, low-frequency oscillations
This paper presents a method for the tuning of a power system stabilizer (PSS) for damping inter-area low-frequency oscillations based on wide area phasor measurements and H infinity control theory. The dynamics of a power system is identified as an approximate model based on voltage phasors obtained by the wide area measurement system (WAMS). Then, a PSS is designed by applying H infinity control theory on the approximate model. The inter-area mode should be damped effectively by a well-tuned PSS based on the state monitoring with the modeling error compensation considered. The proposed method has been applied to a simple two-area system to demonstrate the effectiveness of this approach.
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