By Topic

Inherent transient recovery voltage of power transformers-a model-based determination procedure

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

3 Author(s)
Hribernik, W. ; High Voltage Lab., Swiss Fed. Inst. of Technol. Zurich, Switzerland ; Graber, L. ; Brunke, J.H.

Knowledge of the inherent transient recovery voltage (TRV) associated with power-transformer terminal faults is essential for correct application of circuit breakers. Instead of establishing standards for TRV parameters as a function of power transformer ratings, standardized model-based determination procedures are proposed. The dynamic properties of the transformer short-circuit impedance Zx allow a straightforward calculation of the TRV waveshape without high computational effort. Test setups for lightning impulse (LI), frequency response analysis (FRA) and low-voltage current injection (LVCI) are presented and discussed. A sample calculation introduces the TRV calculation from LI test data and comparison with LVCI and FRA results. It is concluded that the presented procedure should be incorporated into the transformer type-test routines to provide highly valuable information about the TRV of each specific transformer.

Published in:

Power Delivery, IEEE Transactions on  (Volume:21 ,  Issue: 1 )