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Titre: | Oscillation damping improvement using PMU based PSS in power system |
Auteur(s): | Bousaadia, Baadji Bentarzi, Hamid(Directeur de thèse) |
Mots-clés: | Power system Load flow Prime mover |
Date de publication: | 2021 |
Editeur: | Université M'Hamed Bougara : Institut de génie électrique et électronique |
Résumé: | The interconnection of power systems and the increase of power transfer are required to
meet the increasing demand of electrical energy. These requirements drive the modern power
systems closer to their limits of operation. Consequently, low frequency oscillations may
arise in systems not affected previously and become a major source of systems instability and
limitation factor of power exchange over long distances.
One method of mitigation of those oscillations relies on power system stabilizers
(PSSs) that can provide effective damping to local oscillation modes by using locally
measured signals. However, they lack observability of inter-area modes, which results of
poor damping for those modes.
In this thesis, a wide area power system stabilizers (WAPSSs), able to effectively
damp out inter-area oscillations in large power systems, is adopted. The proposed approach
relies on the development of phasor measurement units (PMUs), which provide remote
signals as inputs for WAPSSs for real-time implementation. The effectiveness of the
proposed approach depends on many considerations.
The first step is the selection of suitable control locations and remote signals with
high observability to the targeted inter-area modes. To face this requirement, geometric
measures of observability and controllability is adopted.
The second crucial step is the optimal tuning of WAPSS to achieve adequate
damping. A novel metaheuristic algorithm, comprehensive learning bat algorithm (CLBAT),
is employed for the tuning process and compared with state of the art metaheuristic
algorithms.
Finally, the time delays associated with the global signals can deteriorate the
performance of the proposed WAPSSs. Thereby a time delay compensators are proposed
compensate time delays in wide area measurements based control.
The performance of these WAPSSs has been evaluated on the New England/ New
York and Two area four machine multimachine systems via eigenvalue analysis, and nonlinear
time domain simulations |
Description: | 101 p. : ill. ; 30 cm |
URI/URL: | http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/7044 |
Collection(s) : | Doctorat
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