By Topic

Analysis of T-T Connections of Two Single-Phase Transformers

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

2 Author(s)
Cogbill, B.A. ; Department of Electrical Engineering, Northeastern University ; Hetrick, J.A.

The T-T connected transformer is a connection of two single-phase transformers which will yield the same phasor relation as a standard 3-phase transformer. However, because of the unsymmetrical nature of the T-T connected transformer, undesirable negative and zero-sequence voltages may be introduced into the electric system. Fortunately, these voltages are quite small for a properly designed T-T connected transformer under normal load. A method for determining the induced negative-and zero-sequence voltages (or currents) by utilizing the interconnected sequence impedance circuit for the T-T connected transformer is presented.

Published in:

Power Apparatus and Systems, IEEE Transactions on  (Volume:PAS-87 ,  Issue: 2 )