A Contribution to the Insulating System State Estimation for Power Transformers Installed in Amman - Jordan

khalaf Y. Alzyoud^1,

¹Electrical Engineering Department, Faculty of Engineering Technology, Al-Balqa Applied University, Amman, Jordan

Cite this paper

khalaf Y. Alzyoud. A Contribution to the Insulating System State Estimation for Power Transformers Installed in Amman - Jordan. American Journal of Electrical and Electronic Engineering. 2018; 6(1):28-31. doi: 10.12691/AJEEE-6-1-4

Abstract

This work focus on observation of the insulating system and analysis of the insulation resistance measurement results in 110kV, 20 and 63 MVA oil-immersed power transformers are presented. The observation was undertaken from the start-up and it includes graphical and numerical values obtained by measurements, the analysis of the state of insulation provides possibilities to undertake remedial action in due time with the aim to extend the transformer life.

Keywords

contribution, transformer, estimation, insulation, oil transformer

Copyright

This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

References

[1]	“IEEE Std C57.12.90-1999”, IEEE Standard Test Code for Liquid Immersed Distribution Power and Regulating Transformer.
[2]	“Measurement of relative permittivity dielectric dissipation factor and, d.c. resistivity of insulating liquids”, IEC 60247.
[3]	Wang, M., Vandermaar, A.J., and Srivastava, K.D., “Review of condition assessment of power transformers in service,” IEEE Electr. Insulat. Mag.,, Vol. 18, pp. 12-25, 2002.
[4]	Singh, J., Sood, Y.R., and Verma, P., “Experimental investigation using accelerated aging factors on dielectric properties of transformer insulating oil,” Electr. Power Compon. Syst., Vol. 39, pp.1045-1059, 2011
[5]	Shroff, D.H., and Stannett, A.W., “A review of paper ageing in power transformers,” Proc. IEE, Vol. 132, pp. 312-319, 1985.
[6]	T. X. Xue, B. Xie, and Y. Lu: Study on The Insulation Life Models Of Power Transformer “, IEEE, 2008.
[7]	W Young, Transformer life management- condition monitoring, Proceedings of the 1998 IEE Colloquium on transformers life, IEE Colloquium(Digest)IEE Stevange, Engl, p2/1-2/4
[8]	Romero, A.A., Mombello, E.E. and Rattá, G., An overview on power transformer management: Individual assets and fleets, Transmission and Distribution Latin America Conference and Exposition (T&D-LA), Sixth IEEE/PES, pp. 1-7, 2012.
[9]	Susa, D. and Nordman, H., A simple model for calculating transformer hot spot temperature, IEEE Transactions on Power Delivery, 24(3), pp. 1257-1265, 2009.
[10]	CIGRE, Moisture equilibrium and moisture migration within transformer insulation systems, Vol. A2.30, Ed, 2008.
[11]	Fofana, I., Borsi, H. and Gockenbach, E., Fundamental investigations on some transformer liquids under various outdoor conditions, IEEE Transactions on Dielectrics and Electrical Insulation, 8(6), pp. 1040-1047, 2001.
[12]	Gelegenis, J.J., Estimation of hourly temperature data from their monthly average values: case study of Greece, Renewable Energy, 18(1), pp. 49-60, 1999.
[13]	Gomez-Luna, E., Duarte, C., Aponte, G., Guerra, J.P. and Goossen, K.W., Experiences with non-intrusive monitoring of distribution transformers based on the on-line frequency response, Ingeniería e Investigación, 35(1) , pp. 55-59, 2015.
[14]	Crine J.P.; “On the interpretation of some electrical aging and relaxatio phenomena in solid dielectrics”, IEEE Transactions on Dielectrics and Electrical Insulation, 2005, Vol. 12, No.6, pp.1089-1107.
[15]	Muthanna K.T., Sarkar A., Das K., Waldner K.; “Transformer insulation life assessment”, IEEE Transactions on Power Delivery, 2006, Vol. 21, No. 1, pp. 150-156.