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Full-Text Articles in Electrical and Computer Engineering
Design Of Multiple Facts Controllers For Damping Inter-Area Oscillations: A Decentralized Control Approach, Arturo Roman Messina
Design Of Multiple Facts Controllers For Damping Inter-Area Oscillations: A Decentralized Control Approach, Arturo Roman Messina
A. R. Messina
In this paper, a frequency-domain methodology based on decentralised control theory is proposed to co-ordinate multiple FACTS controllers as well as to minimise the potential for adverse interaction between control loops. First, the concept of dynamic loop interaction in multiple-input multiple-output (MIMO) control systems is introduced. Using the notion of a generalised dynamic relative gain in decentralised control systems, a method is then proposed to determine the best pairing of inputs and outputs for the design of MIMO systems. Finally, a residue-based method is adopted to tune system controllers. The design methodology is tested on a 6-area, 130-machine and 351- …
Co-Ordinated Application Of Facts Devices To Enhance Steady-State Voltage Stability, Arturo Roman Messina
Co-Ordinated Application Of Facts Devices To Enhance Steady-State Voltage Stability, Arturo Roman Messina
A. R. Messina
This paper examines the co-ordinated application of flexible ac transmission system (FACTS) technologies to extend system voltage stability margins. A systematic analysis and design method, based on the singular value/eigenvalue decomposition analysis of the load-flow Jacobian and the study of the controllability characteristics of an equivalent state model is used to study the voltage instability phenomenon as well as to assess the potential for small-signal voltage stability improvement by means of FACTS compensation. The method is of particular interest for the preliminary design of new system devices and the study of interactions among existing controllers. Results obtained using a practical …
Analysis Of Subsynchronous Torsional Interactions With Svcs, Arturo Roman Messina
Analysis Of Subsynchronous Torsional Interactions With Svcs, Arturo Roman Messina
A. R. Messina
This paper presents the results of an analytical investigation aimed at assessing the potential for subsynchronous torsional interactions (SSTIs) between turbine-generator rotors and static VAR compensators (SVCs) in longitudinal power systems.A n advanced linear state model of the power system is developed that allows detailed evaluation of the impact of FACTS controllers on SSTIs with turbine generators, as well as the identification of potentially undesirable effects associated with the application of multiple controllers.This approach is general enough to include the representation of complex systems and can be used in conjunction with efficient techniques for the analysis of large sparse linear …