miércoles, 7 de septiembre de 2011

EXCITATION CONTROL OF TORSIONAL OSCILLATIONS DUE TO SUBSYNCHRONOUS RESONANCE: Andrew Yan


ABSTRACT:
Subsynchronous resonance phenomena in power system with series capacitor compensated transmission lines may cause damaging torsional oscillations in the shafts of the turbine generator. In this thesis a high order power system model for subsynchronous resonance studies is derived. An excitation procedure control of torsional oscillations is presented. The excitation control is of the linear optimal type synthesized from the system´s output signals. Dynamic performance test of the excitation controller on the nonlinear model show that all mode oscillations can be stabilized simultaneously within the range of dynamic stability for a wide range of capacitor compensation, but not for a severe transient fault.

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