PD-pulse characteristics in rotating machine insulation

Joachim Holbøll, Mogens Henriksen, A Jensen, F. Sørensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

242 Downloads (Pure)

Abstract

In this paper results are presented from investigations on partial discharges (PD) in insulation systems, resembling the stator insulation in high voltage rotating machines. A model, simulating a stator winding in a slot, has been developed, consisting of simple rotating machine insulation test bars with epoxy/mica insulation, mounted between steel sheets forming a dot, in order to investigate the fundamental behaviour of PD in insulation defects in epoxy/mica insulation and the characteristics of the resulting electrical pulses. Stator slot couplers (SSC) were used to detect pulses coming from artificial defects implemented in the model as well as from the existing voids in the test bars' insulation. Some characteristic pulse shapes were found, which could be related partly to the defect type. The high frequency detection method, with directional couplers, made it possible to localize the defects thereby determining the pulse distortion in the chosen geometry. The influence of some parameters was investigated, such as the voltage applied, the location of the defect with respect to the sensor and the orientation of the defect in the slot. This information is essential for PD-detection systems where the noise/signal separation is based on the pulse shape, such as the SSC-technology used in the present investigations
Original languageEnglish
Title of host publicationConference Record of the IEEE International Symposium on Electrical Insulation
PublisherIEEE
Publication date1994
Pages322-326
ISBN (Print)07-80-31942-7
DOIs
Publication statusPublished - 1994
Event1994 IEEE International Symposium on Electrical Insulation - Pittsburgh, PA, United States
Duration: 5 Jun 19948 Jun 1994
http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=3187

Conference

Conference1994 IEEE International Symposium on Electrical Insulation
CountryUnited States
CityPittsburgh, PA
Period05/06/199408/06/1994
Internet address

Bibliographical note

Copyright: 1994 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

Fingerprint Dive into the research topics of 'PD-pulse characteristics in rotating machine insulation'. Together they form a unique fingerprint.

Cite this