DocumentCode
1543911
Title
Analysis of very fast transients in transformers
Author
Shibuya, Y. ; Fujita, S. ; Tamaki, E.
Volume
148
Issue
5
fYear
2001
fDate
9/1/2001 12:00:00 AM
Firstpage
377
Lastpage
383
Abstract
Very fast transient overvoltages generated in gas-insulated switchgear could cause a voltage oscillation inside the connected transformer. A practical method to calculate the high-frequency transients in the transformer winding is developed based on multiconductor transmission-line theory. Resonance characteristics of a transformer are assessed using the inductance matrix obtainable from its winding geometry. Applicability to transients of frequencies up to several megahertz is checked in a model transformer and an actual 500 kV transformer. The calculated interturn voltage waveforms are in particularly good agreement with experiment
Keywords
inductance; multiconductor transmission lines; oscillations; power transformers; resonance; transformer windings; transient analysis; transmission line theory; 500 kV; gas-insulated switchgear; inductance matrix; interturn voltage waveforms; multiconductor transmission-line theory; power transformers; resonance characteristics; transformer winding; very fast transient overvoltages; very fast transients analysis; voltage oscillation; winding geometry;
fLanguage
English
Journal_Title
Generation, Transmission and Distribution, IEE Proceedings-
Publisher
iet
ISSN
1350-2360
Type
jour
DOI
10.1049/ip-gtd:20010504
Filename
959664
Link To Document