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DOI: Calculation Of High Harmonics Produced By The Saturation Of A Magnetic Core Of A Current Transformer
Sultan Fayzullayevich Amirov , Doctor Of Technical Sciences, Professor Department Of “Power Supply” Tashkent State Transport University, Tashkent, Uzbekistan Shavkat Mukhsimov , Doctoral Student (PhD) Department Of “Power Supply” Tashkent State Transport University, Tashkent, Uzbekistan Otabek Tashmuhammatovich Boltayev , Associate Professor Doctor Of Philosophy Intechnical Sciences (Phd), Department Of Railway Power Supply Tashkent Institute Of Railway Engineers Tashkent, UzbekistanAbstract
The article developed an expression that allows to determine the amplitude values of different harmonics of the magnetizing current at high harmonics caused by the saturation of the magnetic core of the current transformer. Using this expression, it is possible to determine the percentage of the main harmonics obtained for different harmonics, and the determined results allow to accurately set the value of the current (voltage) in the transition state from one range to another to automatically adjust the range of the current transformer.
Keywords
Auto-adjustable current transformer,, magnetizing current, high harmonics
References
Zhezheleiko I.V. Higher harmonics in power supply systems of industrial enterprises. M .: Energoatomizdat, 2000.
Arrilaga J., Bradley D., Bodger P. Harmony! in electrical systems: Per. from English M .: Energoatomizdat. 1990.
Electrotechnical reference book: In 3 volumes. V.2. Electrical products and devices / Under total. ed. professors of MPEI. M .: Energoatmizdat. 1986.
Kuchumov L.A., Kuznetsov A.A. Methodology for calculating higher harmonics of magnetizing currents of step-down transformers // Electricity. 1998. No. 3.
Vakhnina V.V., Chernenko A.N., Kuznetsov V.L. Influence of geo-induced currents on saturation of the magnetic system of power transformers // Vector of science of Togliatti State University. 2012. No. 3 (21).
Sivokon V.P., Serovetnikov A.S., Pisarev A.V. Higher harmonics as an indicator of geomagnetically induced currents // ELECTRO. Electrical engineering, power engineering, electrical industry. 2011. No. 3.
Vakhnina V.V., Kuvshinov A.A., Chernenko A.N., Dubinin M.V. Influence of geoinduced currents on the voltage quality of the distribution network. Electricity quality management / Sat. Proceedings of the Intern. scientific and practical conf. M .: LLC "Center for Printing Services" Raduga ". 2014.
Takasu N., Oshi T., Miyawaki F., Saito S., Fujiwara Y. An Experimental Analysis of Excitation of Transformers by Geomagnetically Induced Currents // IEEE Transactions on Power Delivery. 1994. Yol. 9.No. 2.
Bryantsev AM. Magnetizable ferromagnetic devices with maximum saturation of sections of the magnetic system // Electricity. 1986. No. 2.
Kuvshinov A.A., Vakhnina V.V., Chernenko A.N., Rybalko T.A. An analytical model for the emission of harmonics of the magnetizing current by a power transformer under the influence of quasi-constant currents. Electrical engineering. - 2017, No. 5. - P. 25-31. 26.06.2017
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