NDLI: Dielectric testing and corona inspection of a 14.4-KV, 1800 RPM centrifugal compressor motor stator insulation system

Content Provider	IEEE Xplore Digital Library
Author	Stranges, M.K.W. Haq, S.U. Teran, L.H.A. Veerkamp, W.
Copyright Year	2014
Description	Author affiliation: Dow Chem. Co., Houston, TX, USA (Veerkamp, W.) \|\| GE Power Conversion, Peterborough, ON, Canada (Stranges, M.K.W.; Haq, S.U.; Teran, L.H.A.)
Abstract	Factory acceptance tests (FAT) of a new high voltage rotating machine include comprehensive diagnostic tests of the finished stator winding insulation system. The end user obtains baseline data for condition monitoring performed during the machine's operating life. The design geometry of stator windings and manufacturing processes used to produce them will affect the dielectric test results. There is a significant challenge in comparing test results from different stators to obtain a statistically useful sample for an acceptance test database. This paper compares dielectric test results from the 14.4-kV windings of several new 1800 rpm, 26.1 MW (35000 hp) centrifugal compressor synchronous motor stators of identical design, built for two US chemical plants. The results are compared to those from accompanying sacrificial coils. The stator diagnostic tests include dissipation factor (DF, or tan delta), power factor tip up (PFTU, or delta tan delta), offline partial discharge (PD), corona inspection with a UV analyzer, and online PD. Sacrificial coils produced and processed alongside each stator received the specified API coil acceptance tests, plus corona inspection with a UV analyzer. PD measurements on the sample coils were repeated at elevated voltage, and the results compared to the corona inspection observations. The paper shares the comparative analysis of the stator- and coil test results as an excellent example of baseline FAT data.
Starting Page	185
Ending Page	190
File Size	334396
Page Count	6
File Format	PDF
ISBN	9781479930548
ISSN	00903507
e-ISBN	9781479930555
DOI	10.1109/PCICon.2014.6961883
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stator windings Coils Partial discharges Corona Insulation Discharges (electric) corona discharge stator winding insulation testing PFTU partial discharge
Content Type	Text
Resource Type	Article
Subject	Fuel Technology Energy Engineering and Power Technology

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