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FAN ZHANG ET AL.: VIBRATION-MEASUREMENT-BASED CONDITION MONITORING
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FAN ZHANG ET AL.: VIBRATION-MEASUREMENT-BASED CONDITION MONITORING
The article presents the 20 years of experience of researchers at Xi’an Jiaotong University and The University of Queensland on transformer vibration characteristics and its application to condition monitoring. It describes the physical fundamentals of the origin of the vibrations for the power transformer, the analysis of the harmonics associated with core and winding vibrations.
Vibrations of the transformers are complex multi-physics phenomena that require a deep understanding of electromagnetic and mechanical principles. They mainly originate from the core and windings, and they are determined by the capacity, silicon steel materials, structural design, and by magnetic flux density fields. The analysis can be used to assess the condition of a transformer in terms of mechanical fixation quality, buckling or ageing of the components.
Keywords: broadband signals, frequency, modal analysis, monitoring, vibration
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