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- W771327835 abstract "The paper presents the results of vibroacoustic investigations and the measurements of the acoustic pressure level (noise) of a transformer model. The measurements were taken at a full transformer load in two operation conditions: at a producer packeted core and at unpacketed core. Unpacketing consisted in loosing the screws pressing the particular core plates. Mechanical vibrations were registered and the acoustic pressure level was measured. The vibroacoustic analysis results are presented in the form of frequency spectra and the results of the acoustic analysis of the transformer under study are shown by determining corrected values of the acoustic pressure level and by a frequency analysis. Modern approach of electric power enterprises to the management of the network assets accumulated, especially power transformers, is based on a multi-parameter analysis of the units under study [1{4]. An overall assessment of a transformer may be carried out based on several parameters, including its current signiflcance in an electric power system and its impact on environment. Transformer operation is more and more often connected with the problem of an excessive emission of noise into environment. This phenomenon becomes even more valid if a transformer station is located in the vicinity of living quarters. The problems with exceeding allowable values of acoustic power around a transformer usually refer to the units of older constructions. The sources of sound are not only magnetostriction phenomena taking place in the core or cooler spinning fans but also windings which vibrate due to electrodynamic forces and operation of the pumps forcing oil ∞ow." @default.
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- W771327835 date "2008-12-01" @default.
- W771327835 modified "2023-10-17" @default.
- W771327835 title "The Analysis of Mechanical Vibrations and Acoustic Pressure Level οf a Transformer Model" @default.
- W771327835 doi "https://doi.org/10.12693/aphyspola.114.a-21" @default.
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