Title :
A New Method to Evaluate Residual Flux Thanks to Leakage Flux, Application to a Transformer
Author :
Cavallera, Didier ; Oiring, Vinicius ; Coulomb, J.-L. ; Chadebec, Olivier ; Caillault, B. ; Zgainski, Francois
Author_Institution :
Grenoble Electr. Eng. Lab., Univ. of Grenoble, Grenoble, France
Abstract :
This paper presents a new method to estimate the residual flux in the magnetic circuit of a transformer, which is the key data to determine the ideal closing time for the re-energization of a transformer. The methodology described is based on the measurement with fluxgate sensors of the magnetic field induced by the leakage flux around a single-phase transformer.
Keywords :
fluxgate magnetometers; magnetic circuits; magnetic field measurement; power transformers; fluxgate sensors; leakage flux; magnetic circuit; magnetic field measurement; residual flux; single-phase transformer; transformer re-energization; Current measurement; Magnetic circuits; Magnetic flux; Magnetic sensors; Phase transformers; Power transformers; Magnetic field measurement; magnetic flux leakage; remanence; transformers;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2282175
