Mode Selective Damping of Electromechanical Oscillations Using Supplementary Remote Signals and Design of Delay Compensator
The objective of this paper is to design an H?-based local decentralized PSS (Power System Stabilizing) controller. The controller is designed for separate damping of specific inter-area modes while considering time-delay. The controller uses remote signals, selected suitably from the whole syste...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
Mehran University of Engineering and Technology
2011-01-01
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Series: | Mehran University Research Journal of Engineering and Technology |
Subjects: | |
Online Access: | http://publications.muet.edu.pk/research_papers/pdf/pdf67.pdf |
Summary: | The objective of this paper is to design an H?-based local decentralized PSS (Power
System Stabilizing) controller. The controller is designed for separate damping of
specific inter-area modes while considering time-delay. The controller uses remote
signals, selected suitably from the whole system, as supplementary inputs. The wide
area or global signals have been obtained where the oscillations in the remote network
locations could be well observed. The PSS controller uses only those local and remote
input signals in which the assigned single inter-area mode is most observable and is
located at a generator which is most effective in controlling that mode. A long timedelay
due to remote signal transmission and processing in WAMS (Wide Area
Measurement System) can cause system instability and degradation of system
robustness. Therefore, this paper uses the time-delay compensation method that uses
lead or lag adjustment method while integrates the gain scheduling to overcome the
impacts of constant time-delay. The effectiveness of the resulting PSS controllers is
established through simulations using three machine three area test power system. |
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ISSN: | 0254-7821 2413-7219 |