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Technical science and innovation

Abstract

The paper studies a qualitatively new way to reduce the measurement error of phase voltages in solving the problem of filtering the magnetization current and the reproduction of the primary voltage signals of two-winding measuring transformers. Errors of voltage measuring transformers in these transient and stationary processes are primarily due to the nonlinearity of the magnetization characteristics of the electrical steel cores and, in addition, the active resistance of the windings, the load and their inductances, and in some cases, and capacity. In fact, errors are methodical and in many practical applications limit the use of various transformers because of the inability to provide the required accuracy class.

The results obtained can be used for other types of these transformers in high voltage three-phase systems. Traditionally, such transformers are described using linear, electrical equivalent circuits, which leads to large, unacceptable errors in the analysis and control of various non-stationary processes in the transformer equipment and the power system circuit, where it is installed, which in turn can cause significant damage equipment, loss of stability of power supply systems, large economic losses and violation of the safety of their service.

First Page

213

Last Page

221

DOI

https://doi.org/10.51346/tstu-01.21.2-77-0122

References

  1. Vanin V.K. Analysis of processes from power and measuring transformers and correction of their description for various applications / V.K. Vanin, M.G. Popov // "Relay protection and automation" - scientific and practical publication. 2018. No. 01 (30). S. 39-45.
  2. Popov, MG Dynamic Identification of Electromagnetic Parameters for Adaptive Protection Devices / Popov, MG, Abounekirah , SS, Goriachevskii Konstantin, S. Sinianskii Ivan, V. // January 28-30, 2019, St. Petersburg . https : // ieeexplore . ieee . org / document / 8656689
  3. A method of filtering the magnetizing current and reproducing secondary currents of multi-winding power transformers. / Vanin V.K., Popov M.G. / Patent for invention, No. 2684169 (30.06.2019). Publ . 04.04.2019, Bul . No. 10.
  4. Saidkhodjaev A.G., Chmutov A.P., Calculation of an electrical network with a mixed non-uniform load. Industrial Energy Magazine, 198 6. No. 11, 7-31 p.
  5. Vanin V.K. Reproduction of currents and voltages of measuring current transformers / V.K. Vanin, M.G. Popov et al. // "Relay protection and automation" - scientific and practical publication. 2018. No. 04 (33). S.42-45.
  6. Saidkhodjaev A.G. Energy audit methods and tools. Tutorial. T .: "Noshirlik Yodusi", 2015. - 182 p.
  7. Saidkhodjaev A.G. , Teshabaev B.M. A method for determining the maximum electrical load of an electrical network and a method for determining the maximum electrical load of individual electrical consumers. Patent No. IAP 04216 (IAP 20060404).
  8. Kadyrov TM, Karimov Kh.G., Saidkhodjaev A.G. et al. Electrical Installation Rules (PUE) of the State Institute " Uzgosenergonadzor " / Under total. ed. A.D. Nimatullaeva , B.T. Tashpulatova , A.I. Usmanova Tashkent: Inst . mathematics and information technology. 2011. – 757 p.
  9. U.Rakhmonov, N.Niyozov, K.Lee Development of correlation and regression models of electric energy indicators of the equipment with continuous nature of production. Journal of Technical Science and innovation. ISSN: 2181 – 0400.2019, №2, С. 203-210.
  10. A. G. Saidkhodjaev , Yu Bobojonov , UM Turdiev Perspectives of electric supply of municipal housing consumers in cities of Uzbekistan . International Journal of Advanced Science and Technology Vol. 29, No. 11s, (2020), pp. 1560-1564 ISSN: 2005-4238 IJAST Copyright ⓒ 2020 SERSC 1560 ( Scopus )
  11. Saidkhodjaev , AG, Najimova , AM, Bijanov , AK (2019) Method for determining the maximum load of consumers in city power supply systems, E3S Web Conf 139 doi: 10.1051 / e3sconf / 201913901078 (Scopus)
  12. Saidkhodjaev , AG, Ametova , B.Kh. , Mamutov , MM (2019) Intellectualization of determination of electrical loads in city electric networks, E3S Web Conf 139 doi: 10.1051 / e3sconf / 201913901072 (Scopus)
  13. Saidkhodjaev AG An innovative way to determine the maximum (calculated) electrical load of power supply systems of cities. International Journal Of Advanced Research in Science Engineering and Technology. India. 2019 may p. 9143-9145
  14. Saidkhodjaev AG Modern automatic technology of registrations and calculating electric loading. International Journal Of Advanced Research in Science Engineering and Technology India. 2019 may 9161-9165.
  15. Saidkhodjaev AG, Saidkhodjaeva M, Uzbekistan: Modernization of Energy Sector Myths or Reality? publication web, IEAA / International Association for Energy Economics./ "Redefining the ene rg y ECCO m y : Changing Roles of Industry Govemment and R e s ea r a h", Hos t a b e r 2011. Washington . DC USA .
  16. Saidkhodjaev A.G. A new method for determining electrical loads based on interval analogs of interpolation splines. Magnitogorsk. FGBOU VPO MSTU. Journal. "Automated technologies and production" 2015. No. 2 (8) 28-30 p.
  17. Yuldashev Z.Kh., Saidkhodjaev A.G., Ibragimov A.A. Algorithms for determining the loads of electrical networks based on the collection and processing of large amounts of data. Distributed information and computing resources - DISCR -2014 - Novosibirsk, Russia : Institute of Computational Engineering SB RAS, 2014. Reg. but measures 0,321,500,379.
  18. Saidkhodjaev A.G., Anashkin A.A. Study of reactive power compensation in urban electrical networks. Magazine « Evropean science ™ Review, » 201 7. Release sixth.
  19. Saidkhodjaev A.G., Chmutov A.P. Influence of voltage quality on energy-saving technologies. Journal "Problems of Energy and Resource Saving" 2003 №1-2, 97-107 p .
  20. A. Saidkhodjaev , M. Saidkhodjaeva Modern approach for calculating electric loading or smart. Seventh World Conference on Intelligent Systems for Industrial Automation Volume II. Proceedings WCIS - 2012 Tashkent b - Quadrat. Verlag , 2012, 263-267p.
  21. A. Saidkhodjaev , M. Saidkhodjaeva FINDING THE SMARTEST SMART METERS FOR CENTRAL ASIAN ENERGY SECTOR Publication 12 th International Evropean
  22. Conference of the AAEE / IAEE September 9-12 2012 Venice Italy. Economics Education
  23. Foundation Inc. 2012 USA WWW.iace.org . Journal . International Association of Economists and Power Engineers . USA September 2012.
  24. www.Uzbekenergo.uz
  25. www.patent.u z
  26. www . energetika . ru
  27. www.energosouz.ru

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