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Power System Reliable Stabilization with Actuator Failure
Faculty
Not Specified
Year:
2009
Type of Publication:
Article
Pages:
61-77
Authors:
Soliman, H. M, Morsi, M. F, Hassan, M. F, Awadallah, M. A
DOI:
10.1080/15325000802322020
Journal:
ELECTRIC POWER COMPONENTS AND SYSTEMS TAYLOR \& FRANCIS INC
Volume:
37
Research Area:
Engineering
ISSN
ISI:000261675000004
Keywords :
power system stabilizer, dynamic stability, reliable control, particle swarm optimization
Abstract:
This article presents a new approach to design reliable controllers acting on the excitation and governor of a synchronous alternator. The usage of a power system stabilizer is inevitable for the enhancement of dynamic stability of power grids. The suggested reliable power system stabilizer ensures stability either when both controllers are sound or when one of them fails. A redundant feedback controller is designed using particle swarm optimization to achieve a desired degree of stability whether or not the main controller is responding. The design of the redundant controller is based on minimizing an eigenvalue-based objective function using particle swarm optimization. A single-machine infinite-bus system is considered to demonstrate the functionality of the proposed fault-tolerant controller. Results of the eigenvalue analysis reported in the present article show the effectiveness of the proposed power system stabilizer under different loading conditions. The approach is extended to consider reliable stabilization for multi-machine systems where the designed controller could successfully stabilize the system with sound operation as well as under control channel failure.
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