Comparison of EMI signatures to improve condition assessment of generator stator insulation

Author

Timperley, James E. ; Vallejo, José M.

Author_Institution

Doble Eng., Doble Power Services, Galloway, OH, USA

fYear

2012

fDate

10-13 June 2012

Firstpage

281

Lastpage

284

Abstract

An important benefit of EMI (Electromagnetic Interference) Diagnostics when applied to identical generators is that the EMI Signatures can be directly compared to better assess the overall health of these machines. This capability allows an accurate ranking of any generator deterioration that may be present and in turn provides critical information to help optimize maintenance practices. Trending data is discussed. Examples of two load tests on several generators are presented. This technique detects loose components. The examples shown include machines with loose windings and tight windings. Comparison of the EMI signatures between similar generators is provided with explanation. Only the verified results of field tests on operating generators are presented.

Keywords

condition monitoring; electric generators; electromagnetic interference; machine insulation; maintenance engineering; stators; EMI diagnostics; EMI signatures; condition assessment; electromagnetic interference; generator deterioration; generator stator insulation; load test; machine health assessment; machine windings; maintenance practice optimization; Electromagnetic interference; Generators; Insulation; Maintenance engineering; Partial discharges; Stator windings; EMI Diagnostics; generator condition assessment; loose stator windings; on line testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation (ISEI), Conference Record of the 2012 IEEE International Symposium on

Conference_Location

San Juan, PR

ISSN

1089-084X

Print_ISBN

978-1-4673-0488-7

Electronic_ISBN

1089-084X

Type

conf

DOI

10.1109/ELINSL.2012.6251473

Filename

6251473