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Excitation control of torsional oscillations due to subsynchronous resonance

University of British Columbia

Subsynchronous resonance phenomena in a 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 for control of torsional oscillations is presented. The excitation control is of the linear optimal type synthesized from the system's output signals. Dynamic performance tests 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.

Text

2010-03-06

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http://hdl.handle.net/2429/21612

Electrical and Computer Engineering

University of British Columbia

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