Distance Protection Aspects of Transmission Lines Equipped with Series Compensation Capacitors

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dc.contributor.authorSummers, Clinton Thomasen
dc.contributor.committeechairPhadke, Arun G.en
dc.contributor.committeememberLiu, Yiluen
dc.contributor.committeememberMili, Lamine M.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T20:46:20Zen
dc.date.adate1999-10-22en
dc.date.available2014-03-14T20:46:20Zen
dc.date.issued1999-09-29en
dc.date.rdate2000-10-22en
dc.date.sdate1999-10-03en
dc.description.abstractIn order to meet the high demand for power transmission capacity, some power companies have installed series capacitors on power transmission lines. This allows the impedance of the line to be lowered, thus yielding increased transmission capability. The series capacitor makes sense because it's simple and could be installed for 15 to 30% of the cost of installing a new line, and it can provide the benefits of increased system stability, reduced system losses, and better voltage regulation.1 Protective distance relays, which make use of impedance measurements in order to determine the presence and location of faults, are "fooled" by installed series capacitance on the line when the presence or absence of the capacitor in the fault circuit is not known a priori. This is because the capacitance cancels or compensates some of the inductance of the line and therefore the relay may perceive a fault to be in its first zone when the fault is actually in the second or third zone of protection. Similarly, first zone faults can be perceived to be reverse faults! Clearly this can cause some costly operating errors. The general approach of interest is a method leading to the determination of the values of series L and C of the line at the time of the fault. This is done by analyzing the synchronous and subsynchronous content of the V and I signals seperately which provides adequate information to compute the series L and C of the line.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-100399-152011en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-100399-152011/en
dc.identifier.urihttp://hdl.handle.net/10919/35284en
dc.publisherVirginia Techen
dc.relation.haspartthesisnew.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectcompensationen
dc.subjectpoweren
dc.subjectseries capacitoren
dc.subjectspark gapen
dc.subjectmetal oxide varistoren
dc.subjectMOVen
dc.subjectcomputer relayingen
dc.subjectrelayingen
dc.subjectdistance protectionen
dc.subjectseries capacitor compensated lineen
dc.subjecttransmission lineen
dc.titleDistance Protection Aspects of Transmission Lines Equipped with Series Compensation Capacitorsen
dc.typeThesisen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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