The placing of line surge arresters and fuses on 11 and 12 kV lines to protect equipment against lightning

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dc.contributor.advisorHoltzhausen, J. P.
dc.contributor.authorDirkse van Schalkwyk, W. J.
dc.contributor.otherStellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering.en_ZA
dc.date.accessioned2012-08-27T11:35:03Z
dc.date.available2012-08-27T11:35:03Z
dc.date.issued2001-03
dc.descriptionThesis (MEng)--University of Stellenbosch, 2001.en_ZA
dc.description.abstractENGLISH ABSTRACT: Unshielded distribution lines has a poor performance during lightning activity. Lightning initiates flashovers between the phases and earth and causes line breakers to trip several times during a lightning storm. In addition equipment like fuses, surge arresters and transformers are damaged by lightning and cause in some cases long power interruptions to customers. The application of line surge arresters on distribution lines is a solution that is implemented worldwide to limit the lightning related problems. This thesis investigated using line surge arresters in conjunction with bushing-mount fuses to decrease nuisance fusing and transformer damage during lightning activity. Two new pieces of equipment (dropout surge arresters and transformer bushingmount fuses) were developed and strategically placed on 4 different distribution lines. Equipment failures decreased by 90 % while financially the project had an excellent return on investment.en_ZA
dc.description.abstractAFRIKAANSE OPSOMMING: Distribusie lyne sonder skermdrade presteer swak gedurende weerlig aktiwiteit. Weerlig veroorsaak oorvonking tussen fases en aard geleiers wat lei tot breker klinke. Transformators, sekerings, stuwingsafleiers en ander toerusting word ook deur weerlig beskadig en veroorsaak in sommige gevalle lang toevoer onderbrekings. Installering van lyn stuwingsafleiers op distribusielyne is 'n metode wat wêreldwyd gebruik word om oorvonking en weerligskade te beperk. Hierdie tesis ondersoek die installering van lyn stuwingsafleiers en deurvoerder gemonteerde sekerings om transformator skade en onnodige blaas van sekerings te beperk tydens weerlig aktiwiteit. Nuwe toerusting (uitval stuwingsafleiers en transformator deurvoerder gemonteerde sekerings) was ontwikkel en strategies op 4 verskillende distribusie lyne geïnstalleer. 'n Negentig persent vermindering in toerusting beskadiging is behaal terwyl die projek finansiël 'n goeie opbrengs op belegging meegebring het.af_ZA
dc.format.extent1 v. (various pagings) : ill.
dc.identifier.urihttp://hdl.handle.net/10019.1/52553
dc.language.isoen_ZAen_ZA
dc.publisherStellenbosch : Stellenbosch Universityen_ZA
dc.rights.holderStellenbosch Universityen_ZA
dc.subjectElectric power distributionen_ZA
dc.subjectElectric linesen_ZA
dc.subjectLightningen_ZA
dc.subjectDissertations -- Electronic engineeringen_ZA
dc.subjectDistribution linesen_ZA
dc.subjectTheses -- Electronic engineeringen_ZA
dc.titleThe placing of line surge arresters and fuses on 11 and 12 kV lines to protect equipment against lightningen_ZA
dc.typeThesisen_ZA
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