DETERMINATION OF REPLACEMENT EFFICIENCY OF TRANSFORMERS WITH LONG SERVICE LIFE
Abstract
The paper shows non-efficient application of the existing economical models for determination of replacement time for transformers with long service life because these models do not take into account real changes in transformer parameters during its operational period. An improved mathematical model for estimation of replacement efficiency of power transformers which are used at substations of power distribution networks has been developed in the paper. The model makes it possible to determine an optimum replacement time and economically justified operational service life of the transformers.
About the Authors
M. I. FursanovBelarus
Professor, PhD in Engineering
N. S. Petrashevich
Belarus
Graduate student
References
1. State Standard 11677-85. Power Transformers. General Technical Specifications. Moscow, USSR State Committee on Standards, 1985. 48 p. (In Russian).
2. Alekseev, B. A., Vorotnitsky, V. E. On Specification of Norms and Reduction of Electric Energy Losses in Power Transformers With due Account of Their Operational Service Life. Avail-able at:http://portalenergetika.com/articles/ob_utochnenii_normativov_i_snijenii_poter_elektroenergii_v_silovyih_transformatorah_s_uchetom_sroka_ih_slujbyi_24. (accessed 10 October 2013).
3. Petrashevich, N. S. (2013) Influence of Load Parameters on Efficiency of Transformer Replacement in Distribution Networks. Izvestiia Vysshikh Uchebnykh Zavedenii i Energeticheskikh Ob’edinenii - Energetika. [Proceedings of the Higher Education Institutions and Power Engineering Associations - Power Engineering], 4, 28-36.
4. Guseva, S., Breners, N. (2008) Analysis of Measures on Modernization of Transformer Equipment. Elektoenergetika-2008. Trudy 6 Mezhdunarodnogo Foruma [Power Engineering-2008. Proceedings of the 6th International Forum. Saint-Petersburg, 9-12.
5. Karapetian, I. G., Faibisovich, D. L., Shapiro, I. M. (2012) Reference Book on Designing of Electrical Network. 4th ed. Moscow, ENAS.
6. Savoskin, N. E. (2004) Reliability of Electrical Systems. Penza: Publishing House of Penza State University.
7. Ahmed, E. B. Abu-Elanien (2011) Transformer Health Assessment and Techno-Economic end of Life Evaluation. Dr. of Philosophy diss. Waterloo: University of Waterloo.
Review
For citations:
Fursanov M.I., Petrashevich N.S. DETERMINATION OF REPLACEMENT EFFICIENCY OF TRANSFORMERS WITH LONG SERVICE LIFE. ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations. 2014;(3):13–19. (In Russ.)