THE DEGREE OF POLYMERIZATION OF POWER TRANSFORMERS’ PAPER INSULATION
https://doi.org/10.30724/1998-9903-2018-20-9-10-34-38
Abstract
The paper presents the results of research and analysis of literature data on the paper insulation's thermal aging. An exponential decrease in the degree of polymerization of paper insulation from the aging time is established, at the starting time of transformers’ operation the aging rate of paper insulation is maximal and after that its slowing down. It was found out that the degree of polymerization at the starting time of the transformer's operation can be in the range of 900 units, this is due to its drying during the manufacturing process.
About the Authors
V. K. Kozlov
Kazan State Power Engineering University, Kazan
Russian Federation
Doc. Sci. (physical&mathematical), Prof., department «Electric power systems and grids»
Russian Federation
Doc. Sci. (physical&mathematical), Prof., department «Electric power systems and grids»
A. Kh. Sabitov
Kazan State Power Engineering University, Kazan
Russian Federation
master of engineering and technology, senior lecturer «Electric power systems and grids »
Russian Federation
master of engineering and technology, senior lecturer «Electric power systems and grids »
References
1. Alekseev B.A. The monitoring of the status (diagnostics) of large power transformers. M .: ENAS, 2002.
2. Ershov B.G. Measurement of polymerization’s degree of power equipment’s paper insulation in the electrical power engineering and electric power industry / B.G. Ershov V.B., Komarov, E.O. Lyutko // Measurements in the modern world - 2013: a collection of scientific papers of the 4th International Scientific and Practical Conference. St. Petersburg.: Publishing house Polytechnic. University, 2013. P. 21–24.
3. Arakelyan V.G. Chemistry, mechanisms and kinetics of aging of cellulosic materials. Part I. Chemistry, mechanisms and kinetics of cellulose decomposition // Electrical Engineering. 2006. № 6. P. 29–38.
4. Kozlov V.K, Sabitov A.Kh., Nizamutdinov B.R. Research of aging process of paper-oil insulation in the visible range / V.K. Kozlov, A.Kh. Sabitov, B.R. Nizamutdinov // News of higher educational institutions. Problems of energy. 2015. № 3-4. P. 81–85.
5. Maslyakova A.V. Increase of electrophysical characteristics and stability to thermo-aging of cellulose-containing dielectric by its modification with chitosan: dis. Cand. ... tech. Sciences: 05.09.02 / Maslyakova Anna Vyacheslavovna. St. Petersburg, 2005. 204 with. [Electronic resource] / Access mode: http://www.dissercat.com/content/povyshenie-elektrofizicheskikh-kharakteristik-i-ustoichivostik-termostareniyu-tsellyulozoso [Last references 1.12.17].
6. Dar'yan L.A. Aging’s markers of paper insulation. Correlation of polymerization’s degree of paper insulation with the concentration of methanol in transformer oil [Electronic resource] / L.A. Dar'yan // III Scientific-practical conference "Control of equipment’s technical condition of power energy’s objects". 2016. P. 15. Access mode: http:// www.tiees.ru/fileadmin/f/Conference/2016/11. _Darjan_L.A._Markery_starenija_bumazhnoi_izoljacii.pdf [Last references 4.12.17].
7. Mehta A.K., Sharma R.N., Chauhan S. Thermal aging of solid insulation under dual temperature variation. // Turkish Journal of Electrical Engineering & Computer Sciences, 06.12.2016 [Electronic resource] / Access mode: http://journals.tubitak.gov.tr/elektrik/issues/elk-16-24-6/elk-24-6-50-1411-23.pdf [Last references 2.12.17].
8. Neklepaev B.N. Electric part of power stations and substations. M.: Energoatomizdat, 1986.
9. Osotov V.N. Practical aspects of the evaluation of power transformers’ actual service life [Electronic resource] / V.N. Osotov // III Scientific and Practical Conference "Control of equipment’s technical condition of power energy’s objects". 2016. P. 49. Access mode: http: //www.tiees.ru/fileadmin/f/Conference/2016/15._Osotov_V.N._Prakticheskie_aspekty_ocenki_sroka_sluzhby _transformatorov.pdf [Last references 4.12.17].
10. Drying the active part [Electronic resource] / Access mode: http: //silovoytransformator.ru/stati/sushka-aktivnoy-chasti.htm [Last references 4.12.17].
Review
For citations:
Kozlov V.K., Sabitov A.Kh. THE DEGREE OF POLYMERIZATION OF POWER TRANSFORMERS’ PAPER INSULATION. Power engineering: research, equipment, technology. 2018;20(9-10):34-38. (In Russ.) https://doi.org/10.30724/1998-9903-2018-20-9-10-34-38
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