Journal
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
Volume 99, Issue -, Pages 183-191Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijepes.2018.01.014
Keywords
Low frequency oscillations; Inter area; Wide area damping; Optimization
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A wide area controller using modern multi-band power system stabilizer (PSS) is proposed to damp low frequency oscillations (LFOs) in the presence of wind power penetration. The proposed scheme is perfected in two stages. In the first stage, as the online stage, the generation re-dispatch is utilized to improve the damping of LFOs. In the second stage, as the real-time stage, the modern multiband PSSs are tuned in a wide area basis using ambient synchro-phasor measurements. A hybrid subspace identification approach based on estimation of signal parameters via rotational invariance technique (ESPRIT) and robust project approximation subspace tracking (PAST) technique is developed for online estimation of electromechanical modal properties using ambient phasor measurement data. The estimated modal information is then utilized for optimal wide area tuning of multi-band PSSs. Performance of the proposed scheme is then compared with local and global conventional PSSs. The proposed wide area damping controller is simulated over the IEEE-39 Bus test systems.
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