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Magnetostriction assessment of power transformer (a case study of 30/40MVA, 132/33 kV transformer at Bauchi substation)

Yusuf, A. and Amoo, A. and Aliyu, U. and Mustafa, Mohd. Wazir and Mohd. Zin, Abdullah Asuhaimi (2012) Magnetostriction assessment of power transformer (a case study of 30/40MVA, 132/33 kV transformer at Bauchi substation). In: 2012 IEEE International Power Engineering and Optimization Conference, PEOCO 2012 - Conference Proceedings. IEEE, New York, USA, pp. 114-118. ISBN 978-146730661-4

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Official URL: http://dx.doi.org/10.1109/PEOCO.2012.6230845

Abstract

A lot of things determine the life expectancy of a transformer such as overheating due to triplen harmonics, unbalanced loading, vibro-acoustic noise and so on. For this reason, this paper presents the investigation carried out on the magnetostrictive sound of Bauchi, 30/40 MVA, 132/33 KV substation transformer. Readings were taken using standard audio recording instrument for various loading and voltage conditions in the mornings, afternoons and nights for six days and the offline assessment was carried out using digital spectrum analyzer. However, no access could be gained to the variation of certain important parameters, like changing of core dimensions, loosing or tightening of core and so on, for the substation transformer in-situ in the substation hence separate laboratory test transformers were used in the assessment of the effect of core damping pressure, construction looseness and transformer saturation on the vibro-acoustic noise. Conclusively, increasing the operation voltage of transformer tends to produce more magnetostriction effect while loosening core lamination increases the energy losses.

Item Type:Book Section
Additional Information:Indexed by Scopus
Uncontrolled Keywords:bloch-walls, digital spectrum analyzer, magnetostriction, NEMA method, power transformer
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:35710
Deposited By: Fazli Masari
Deposited On:30 Oct 2013 00:31
Last Modified:04 Feb 2017 06:43

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