{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/12294"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/12294","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"PD trending and TVA test readings are good indicators of the condition of aged stator bar insulation.","abstract":"Keeping generators available on-line is a major factor in achieving maximum productivity in power generation. During operation, generator components are continuously exposed to thermal, electrical, mechanical and environmental stresses. The complex interactions of these stresses degrade the components resulting in a reduction of useful life. An integral part of satisfactory operation of high voltage (HV) electrical rotating plant relies upon the integrity of the electrical HV insulation of both the rotor and stator. The combined effect of the above mentioned stresses results in ageing of the insulation, which if not detected, results in premature failure in service. Deterioration of the stator bar insulation is a leading factor for determining the serviceability of hydro generators. Unexpected and expected stator bar failure can result in forced outages and costly emergency repairs. This research will deal with the deterioration of stator bar insulation in air-cooled hydro generators only.","abstract_html":"Keeping generators available on-line is a major factor in achieving maximum productivity in power generation. During operation, generator components are continuously exposed to thermal, electrical, mechanical and environmental stresses. The complex interactions of these stresses degrade the components resulting in a reduction of useful life. An integral part of satisfactory operation of high voltage (HV) electrical rotating plant relies upon the integrity of the electrical HV insulation of both the rotor and stator. The combined effect of the above mentioned stresses results in ageing of the insulation, which if not detected, results in premature failure in service. Deterioration of the stator bar insulation is a leading factor for determining the serviceability of hydro generators. Unexpected and expected stator bar failure can result in forced outages and costly emergency repairs. This research will deal with the deterioration of stator bar insulation in air-cooled hydro generators only.","abstract_has_math":false,"creators":["Bruintjies, Mark Anthony"],"institution":"Department of Electrical Engineering","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Gaunt, C Trevor"],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012","date_published":"2012","updated_at":"2026-07-22T22:23:46Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/12294","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Gaunt, C Trevor"]},{"key":"dc:creator","label":"Author","values":["Bruintjies, Mark Anthony"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-01-27T08:51:25Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-01-27T08:51:25Z"]},{"key":"dc:date.issued","label":"Date","values":["2012"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Electrical Engineering"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Cape Town"]},{"key":"dc:type","label":"Dc Type","values":["Master Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Masters"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["MSc"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11427/12294"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Includes bibliographical references."]},{"key":"dc:description.abstract","label":"Abstract","values":["Keeping generators available on-line is a major factor in achieving maximum productivity in power generation. During operation, generator components are continuously exposed to thermal, electrical, mechanical and environmental stresses. The complex interactions of these stresses degrade the components resulting in a reduction of useful life. An integral part of satisfactory operation of high voltage (HV) electrical rotating plant relies upon the integrity of the electrical HV insulation of both the rotor and stator. The combined effect of the above mentioned stresses results in ageing of the insulation, which if not detected, results in premature failure in service. Deterioration of the stator bar insulation is a leading factor for determining the serviceability of hydro generators. Unexpected and expected stator bar failure can result in forced outages and costly emergency repairs. This research will deal with the deterioration of stator bar insulation in air-cooled hydro generators only."]},{"key":"dc:title","label":"Title","values":["PD trending and TVA test readings are good indicators of the condition of aged stator bar insulation."]}]}],"canonical_facts":{"dc:contributor.advisor":["Gaunt, C Trevor"],"dc:creator":["Bruintjies, Mark Anthony"],"dc:date.accessioned":["2015-01-27T08:51:25Z"],"dc:date.available":["2015-01-27T08:51:25Z"],"dc:date.issued":["2012"],"dc:description":["Includes bibliographical references."],"dc:description.abstract":["Keeping generators available on-line is a major factor in achieving maximum productivity in power generation. During operation, generator components are continuously exposed to thermal, electrical, mechanical and environmental stresses. The complex interactions of these stresses degrade the components resulting in a reduction of useful life. An integral part of satisfactory operation of high voltage (HV) electrical rotating plant relies upon the integrity of the electrical HV insulation of both the rotor and stator. The combined effect of the above mentioned stresses results in ageing of the insulation, which if not detected, results in premature failure in service. Deterioration of the stator bar insulation is a leading factor for determining the serviceability of hydro generators. Unexpected and expected stator bar failure can result in forced outages and costly emergency repairs. This research will deal with the deterioration of stator bar insulation in air-cooled hydro generators only."],"dc:identifier.uri":["http://hdl.handle.net/11427/12294"],"dc:language.iso":["eng"],"dc:publisher.department":["Department of Electrical Engineering"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["PD trending and TVA test readings are good indicators of the condition of aged stator bar insulation."],"dc:type":["Master Thesis"],"dc:type.qualificationlevel":["Masters"],"dc:type.qualificationname":["MSc"]},"updated_at":"2026-07-22T22:23:46Z"}