Travelling Wave Based DC Line Fault Location in VSC HVDC Systems

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dc.contributor.authorKarasin Pathirannahalage, Amila Nuwan Pathirana
dc.contributor.examiningcommitteeMuthumuni,Dharshana (Electrical and Computer Engineering) Wang,Bing (Mechanical and Manufacturing Engineering)en_US
dc.contributor.supervisorRajapakse,Athula (Electrical and Computer Engineering)en_US
dc.date.accessioned2013-01-04T16:28:13Z
dc.date.available2013-01-04T16:28:13Z
dc.date.issued2013-01-04
dc.degree.disciplineElectrical and Computer Engineeringen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractTravelling wave based fault location techniques work well for line commutated converter (LCC) based high voltage direct current (HVDC) transmission lines, but the large capacitors at the DC line terminals makes application of the same techniques for voltage source converter (VSC) based HVDC schemes challenging. A range of possible signals for detecting the fault generated travelling wave arrival times was investigated. Considering a typical VSC HVDC system topology and based on the study, an efficient detection scheme was proposed. In this scheme, the rate of change of the current through the surge capacitor located at each line terminal is measured by using a Rogowski coil and compared with a threshold to detect the wave fronts. Simulation studies in PSCAD showed that fault location accuracy of ±100 m is achievable for a 300 km long cable and 1000 km long overhead line. Experimental measurements in a practical HVDC converter station confirmed the viability of the proposed measurement scheme.en_US
dc.description.noteFebruary 2013en_US
dc.identifier.urihttp://hdl.handle.net/1993/14399
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectTravelling wave based fault locationen_US
dc.subjectVSC HVDCen_US
dc.titleTravelling Wave Based DC Line Fault Location in VSC HVDC Systemsen_US
dc.typemaster thesisen_US
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