A new concept for online surge testing for the detection of winding insulation deterioration

Author

Grubic, Stefan ; Habetler, Thomas G. ; Restrepo, Jose

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

fYear

2010

fDate

12-16 Sept. 2010

Firstpage

2747

Lastpage

2754

Abstract

A breakdown of the electrical insulation system causes catastrophic failure of the electrical machine and brings large process downtime losses. Preventive maintenance and online monitoring are some of the methods to improve reliability and reduce unscheduled downtime. One of the main reasons for failure is the breakdown of the stator insulation. The offline surge test is the most commonly used offline test to assess the condition of the turn insulation. There is no online monitoring method that is applicable to low voltage machines and has the same capabilities as the surge test. This paper introduces new concepts to implement an online surge test. The possibilities and limitations of the online surge test are presented as well as simulation and experimental results to validate the concepts.

Keywords

condition monitoring; failure analysis; insulation testing; machine insulation; machine windings; nondestructive testing; preventive maintenance; surges; condition monitoring; electrical insulation system breakdown; electrical machine failure; online monitoring; online surge testing; preventive maintenance; reliability; stator insulation; winding insulation deterioration detection; Impedance; Inductance; Inductors; Insulation; Surges; Torque; Transient analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2010 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

978-1-4244-5286-6

Electronic_ISBN

978-1-4244-5287-3

Type

conf

DOI

10.1109/ECCE.2010.5618067

Filename

5618067