NDLI: Usability of vibration measurement for power transformer diagnosis and monitoring

Content Provider	IEEE Xplore Digital Library
Author	Beltle, M. Tenbohlen, S.
Copyright Year	2012
Description	Author affiliation: University of Stuttgart, Institute of Power Transmission and High Voltage Technology, Stuttgart, Germany (Beltle, M.; Tenbohlen, S.)
Abstract	This paper discusses the use of vibrations for power transformer surveillance. Therefore, basic research of transformer vibration is presented including the physical background of vibrations and methods of measurement in terms of sensor techniques comparing in-oil and outside tank wall measurement. A case study of an outside tank wall measurement performed on an aged generator step-up transformer presents first experiences in terms of long term measurement evaluating data of a 2-years period. A use case for vibration measurement is drawn for direct current (DC) detection in power transformers. DC can couple into 3 phase AC systems from nearby HVDC systems. The core's subsequent static magnetic field leads to increased core power losses and higher stress for the entire transformer.
Starting Page	281
Ending Page	284
File Size	512463
Page Count	4
File Format	PDF
ISBN	9781467310192
e-ISBN	9781467310208
DOI	10.1109/CMD.2012.6416431
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-23
Publisher Place	Indonesia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibrations Magnetic cores Magnetostriction Vibration measurement Oil insulation Harmonic analysis Diagnosis Power transformers power Transformers Vibration Analysis Monitoring HVDC
Content Type	Text
Resource Type	Article

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Two independent methods for power transformers vibration control

Vibration model of power transformer under short-circuit condition

Nonlinear Time Series Analysis of Transformer's Core Vibration

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Evaluation of various transformations to extract characteristic parameters from vibration signal monitoring of power transformer

Simulation test method for vibration monitoring research on winding looseness of power transformer

Microbubbling in transformer oil due to vibration

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Research on dynamic vibration of transformer cores under wireless power transfer system load

Usability of vibration measurement for power transformer diagnosis and monitoring

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