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dc.contributor.advisorFaried, Sherif O.en_US
dc.creatorElsamahy, Mohamed Salah Kamelen_US
dc.date.accessioned2011-07-10T16:21:29Zen_US
dc.date.accessioned2013-01-04T04:43:20Z
dc.date.available2012-07-15T08:00:00Zen_US
dc.date.available2013-01-04T04:43:20Z
dc.date.created2011-07en_US
dc.date.issued2011-07en_US
dc.date.submittedJuly 2011en_US
dc.identifier.urihttp://hdl.handle.net/10388/etd-07102011-162129en_US
dc.description.abstractThe thesis reports the results of comprehensive studies carried out to explore the impact of midpoint FACTS Controllers (STATCOM and SVC) on the generator distance phase backup protection in order to identify important issues that protection engineers need to consider when designing and setting a generator protection system. In addition, practical, feasible and simple solutions to mitigate the adverse impact of midpoint FACTS Controllers on the generator distance phase backup protection are explored. The results of these studies show that midpoint FACTS Controllers have an adverse effect on the generator distance phase backup protection. This adverse effect, which can be in the form of underreach, overreach or a time delay, varies according to the fault type, fault location and generator loading. Moreover, it has been found that the adverse effect of the midpoint FACTS Controllers extends to affect the coordination between the generator distance phase backup protection and the generator steady-state overexcited capability limit. The Support Vector Machines classification technique is proposed as a replacement for the existing generator distance phase backup protection relay in order to alleviate potential problems. It has been demonstrated that this technique is a very promising solution, as it is fast, reliable and has a high performance efficiency. This will result in enhancing the coordination between the generator phase backup protection and the generator steady-state overexcited capability limit in the presence of midpoint FACTS Controllers. The thesis also presents the results of investigations carried out to explore the impact of the generator distance phase backup protection relay on the generator overexcitation thermal capability. The results of these investigations reveal that with the relay settings according to the current standards, the generator is over-protected and the generator distance phase backup protection relay restricts the generator overexcitation thermal capability during system disturbances. This restriction does not allow the supply of the maximum reactive power of the generating unit during such events. The restriction on the generator overexcitation thermal capability caused by the generator distance phase backup protection relay highlights the necessity to revise the relay settings. The proposed solution in this thesis is to reduce the generator distance phase backup protection relay reach in order to provide secure performance during system disturbances.en_US
dc.language.isoen_USen_US
dc.subjectgenerator capability limitsen_US
dc.subjectmidpoint FACTS controllersen_US
dc.subjectgenerator overexcitation limitersen_US
dc.subjectsupport vector machinesen_US
dc.subjectgenerator phase backup protectionen_US
dc.titleImpacts of midpoint FACTS controllers on the coordiantion between generator phase backup protection and generator capability limitsen_US
thesis.degree.departmentElectrical Engineeringen_US
thesis.degree.disciplineElectrical Engineeringen_US
thesis.degree.grantorUniversity of Saskatchewanen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophy (Ph.D.)en_US
dc.type.materialtexten_US
dc.type.genreThesisen_US
dc.contributor.committeeMemberNguyen, Haen_US
dc.contributor.committeeMemberChowdhury, Nurulen_US
dc.contributor.committeeMemberEl-Serafi, Ahmed M.en_US
dc.contributor.committeeMemberBoulfiza, Mohameden_US
dc.contributor.committeeMemberLiao, Yuanen_US


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