Show simple item record

dc.contributor.advisorFaried, Sherif O.en_US
dc.creatorTang, Guoshengen_US
dc.date.accessioned2006-06-28T15:18:27Zen_US
dc.date.accessioned2013-01-04T04:41:04Z
dc.date.available2006-07-06T08:00:00Zen_US
dc.date.available2013-01-04T04:41:04Z
dc.date.created2006-06en_US
dc.date.issued2006-06-07en_US
dc.date.submittedJune 2006en_US
dc.identifier.urihttp://hdl.handle.net/10388/etd-06282006-151827en_US
dc.description.abstractA problem of interest in the power industry is the mitigation of severe torsional oscillations induced in turbine-generator shaft systems due to Subsynchronous Resonance (SSR). SSR occurs when a natural frequency of a series compensated transmission system coincides with the complement of one of the torsional modes of the turbine-generator shaft system. Under such circumstances, the turbine-generator shaft system oscillates at a frequency corresponding to the torsional mode frequency and unless corrective action is taken, the torsional oscillations can grow and may result in shaft damage in a few seconds. This thesis reports the use of a supplementary controller along with the Voltage Source Converter (VSC) HVDC back-to-back active power controller to damp all SSR torsional oscillations. In this context, investigations are conducted on a typical HVAC/DC system incorporating a large turbine-generator and a VSC HVDC back-to-back system. The generator speed deviation is used as the stabilizing signal for the supplementary controller. The results of the investigations conducted in this thesis show that the achieved control design is effective in damping all the shaft torsional torques over a wide range of compensation levels. The results and discussion presented in this thesis should provide valuable information to electric power utilities engaged in planning and operating series capacitor compensated transmission lines and VSC HVDC back-to-back systems.en_US
dc.language.isoen_USen_US
dc.subjectVSC HVDC back-to-back systemen_US
dc.subjectSubsynchronous resonanceen_US
dc.subjectFACTSen_US
dc.titleDamping subsynchronous resonance oscillations using a VSC HVDC back-to-back systemen_US
thesis.degree.departmentElectrical Engineeringen_US
thesis.degree.disciplineElectrical Engineeringen_US
thesis.degree.grantorUniversity of Saskatchewanen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Science (M.Sc.)en_US
dc.type.materialtexten_US
dc.type.genreThesisen_US
dc.contributor.committeeMemberKasap, Safa O.en_US
dc.contributor.committeeMemberKarki, Rajeshen_US
dc.contributor.committeeMemberChowdhury, Nurul A.en_US
dc.contributor.committeeMemberBurton, Richard T.en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record