The Study of Partial Discharge of a Decommissioned 11kV Rotating Machine

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dc.contributor.authorWaiwicha, Supisara
dc.contributor.authorMonkolsatitpong, Suriya
dc.contributor.authorInwanna, Woranan
dc.contributor.authorVanijkirati, Parada
dc.contributor.authorJeenmuang, Siwakorn
dc.contributor.authorPattanadech, Norasage
dc.date.accessioned2026-08-06T10:43:34Z
dc.date.available2026-08-06T10:43:34Z
dc.date.issued2024-01-01
dc.description.abstractOver time the insulation system of the stator winding in machinery will gradually lose electrical and mechanical strength due to factors such as thermal, electrical, ambient, and mechanical stressors. At a certain point, the material will deteriorate significantly to the extent that the insulation breaks down or cracks under normal operating voltages, due to transient electrical or mechanical situations. This paper presents a study of the stator winding insulation system of a decommissioned 11kV motor with the removed rotor, using offline PD measurement. The measurement results revealed PD signals in all three phases. The PRPD patterns indicate internal delamination discharge and discharge at stress control coating(S/C) and stress control grading which is occurring simultaneously. When the test voltage is increased to a certain point, the electric field stress in the stress control grading area becomes high enough to cause a gap-type discharge pattern, occurring between the press finger and the stress control grading area. Visual inspections also revealed spark discharge.
dc.identifier.citationProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials, 154-157, 2024
dc.identifier.doi10.1109/ICPADM61663.2024.10750682
dc.identifier.other2-s2.0-85211112372
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/14972
dc.sourceProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
dc.subjectInternal delamination discharge
dc.subjectMotor
dc.subjectOff-line partial discharge
dc.subjectPartial discharge
dc.subjectPRPD pattern
dc.subjectStator winding
dc.titleThe Study of Partial Discharge of a Decommissioned 11kV Rotating Machine
dc.typeConference Paper

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