By Topic

A generalized approach for the study of the non linear behaviour of stator winding insulation

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Pinto, C. ; ABB Lenzohm Service Ltd., Mumbai, India

Measurements performed on stator winding insulation indicate variations in capacitance and tan δ values with voltage even in the absence of partial discharge activity. One of the most obvious reasons for this variation is the presence of the non-linear field stress grading system employed at the slot ends. Other reasons include interfacial and space charge polarization phenomena, due to a variety of reasons including contamination of the windings, as well as, the effects of electrostatic forces on delaminated stator insulation. As partial discharge activity results in change in the instantaneous capacitance with voltage, it could also be considered as a case of non linear behaviour of the insulation. The paper discusses a generalized approach to study the influence of non-linear behaviour on the variations of capacitance and losses. Case studies are employed to illustrate the usefulness of measurements on the stator windings in service

Published in:

Conduction and Breakdown in Solid Dielectrics, 1998. ICSD '98. Proceedings of the 1998 IEEE 6th International Conference on

Date of Conference:

22-25 Jun 1998