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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">probener</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. ПРОБЛЕМЫ ЭНЕРГЕТИКИ</journal-title><trans-title-group xml:lang="en"><trans-title>Power engineering: research, equipment, technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-9903</issn><issn pub-type="epub">2658-5456</issn><publisher><publisher-name>Kazan State Power Engineering  University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30724/1998-9903-2025-27-2-126-137</article-id><article-id custom-type="elpub" pub-id-type="custom">probener-3379</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЭЛЕКТРОЭНЕРГЕТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRICITY</subject></subj-group></article-categories><title-group><article-title>Анализ результатов экспериментальных исследований дуговой печи ДСП-30</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of the results of experimental studies of the arc furnace DSP-30</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9655-2683</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бобожанов</surname><given-names>М. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Bobojanov</surname><given-names>M. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бобожанов Максуд Каландарович – д-р техн. наук, профессор кафедры «Электроснабжение»,</p><p>г. Ташкент</p></bio><bio xml:lang="en"><p>Maksud K. Bobojanov,</p><p>Tashkent</p></bio><email xlink:type="simple">mbobojanov@yahoo.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0129-5643</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каримов</surname><given-names>Р. Ч.</given-names></name><name name-style="western" xml:lang="en"><surname>Karimov</surname><given-names>R. Ch.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Каримов Рахматилло Чориевич – д-р философии (PhD) по техн. наукам, доцент,заведующий кафедрой «Электротехника»,</p><p>г. Ташкент</p></bio><bio xml:lang="en"><p>Rakhmatillo Ch. Karimov,</p><p>Tashkent</p></bio><email xlink:type="simple">raxmatillo82@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3007-6853</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Попкова</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Popkova</surname><given-names>O. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Попкова Оксана Сергеевна – канд. техн. наук, доцент, доцент кафедры «Автоматизация технологических процессов и производств»,</p><p>г. Казань</p></bio><bio xml:lang="en"><p>Oksana S. Popkova,</p><p>Kazan</p></bio><email xlink:type="simple">oksiniy@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0047-7066</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Туйчиев</surname><given-names>Ф. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Tuychiev</surname><given-names>F. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Туйчиев Фуркат Нумонович – д-р философии (PhD) по техн. наукам, доцент, доценткафедры «Электроснабжение»,</p><p>г. Ташкент</p></bio><bio xml:lang="en"><p>Furkat N. Tuychiev,</p><p>Tashkent</p></bio><email xlink:type="simple">tuychievfn@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6098-4097</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Махмутханов</surname><given-names>С. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Makhmutkhanov</surname><given-names>S. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Махмутханов Султонхужа Камолхужа угли – ассистент кафедры «Электроснабжение»,</p><p>г. Ташкент</p></bio><bio xml:lang="en"><p>Sultonkhuzha K. Makhmutkhanov,</p><p>Tashkent</p></bio><email xlink:type="simple">sultonmk@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Ташкентский государственный технический университет имени Ислама Каримова</institution><country>Узбекистан</country></aff><aff xml:lang="en"><institution>Tashkent State Technical University named after Islam Karimov</institution><country>Uzbekistan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Казанский государственный энергетический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State Power Engineering University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>28</day><month>05</month><year>2025</year></pub-date><volume>27</volume><issue>2</issue><fpage>126</fpage><lpage>137</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бобожанов М.К., Каримов Р.Ч., Попкова О.С., Туйчиев Ф.Н., Махмутханов С.К., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Бобожанов М.К., Каримов Р.Ч., Попкова О.С., Туйчиев Ф.Н., Махмутханов С.К.</copyright-holder><copyright-holder xml:lang="en">Bobojanov M.K., Karimov R.C., Popkova O.S., Tuychiev F.N., Makhmutkhanov S.K.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.energyret.ru/jour/article/view/3379">https://www.energyret.ru/jour/article/view/3379</self-uri><abstract><p>Целью данной работы является изучение влияния работы дуговой печи ёмкостью 30 тонн на показатели качества электроэнергии путём проведения экспериментальных исследований в плавильном цеху предприятия «Li Da Metal Technology», расположенного в городе Ахангаране. Объектом изучения является дуговая печь ДСП-30, которая питается от печного трансформатора мощностью 30 кВА.</p><sec><title>Результаты</title><p>Результаты. В статье приводятся результаты экспериментальных исследований по изучению влияния электродуговой печи ДСП-30 на работу электрической сети в плавильном цеху предприятия СП ООО «Li Da Metal Technology» и на подстанции «Саноат», обеспечивающей электроэнергией плавильный цех. Были сняты осциллограммы изменения напряжения и тока до и во время процесса плавки. Полученные осциллограммы анализировались методом быстрого разложения в ряд Фурье (Fast Fourier Transformation).</p></sec><sec><title>Заключение</title><p>Заключение. На основе анализа результатов, полученных путем экспериментальных исследований, можно заключить, что электродуговые печи являются мощными нелинейными потребителями с динамически изменяющейся электрической нагрузкой. При работе печи в режиме плавки показатели качества напряжения и тока резко ухудшаются, а форма кривых резко отличаются от синусоидальной. Эффекты ухудшения показателей качества электроэнергии отчетливо проявляются во вторичной обмотке печного трансформатора, а в шинах промышленной подстанции, питающей станцию электроэнергией эти эффекты проявляются в гораздо более затухающем состоянии и могут быть зарегистрированы специальными анализаторами и осциллографами. При работе дуговой печи в режиме плавления величина напряжения отличается от номинального значения от 300 до 500 Вольт. Если устройство компенсации реактивной мощности SVG не подключено в динамическом режиме, отклонение напряжения может достигать 5000 В. В заключение следует отметить, что электродуговая печь как нелинейный и сильно меняющийся потребитель оказывает существенное влияние на ухудшение качественных показателей электроэнергии. С точки зрения теории показателей качества электрической энергии данная ситуация является ярким примером негативного влияния на качественные показатели источника питания со стороны потребителя.</p></sec></abstract><trans-abstract xml:lang="en"><p>The purpose of this work is to study the influence of the operation of an arc furnace with a capacity of 30 tons on the quality of electricity by conducting experimental studies in the melting shop of the «Li Da Metal Technology» enterprise located in the city of Akhangaran. The object of study is the DSP-30 arc furnace, which is powered by a 30 kVA furnace transformer.</p><sec><title>Results</title><p>Results. The article presents the results of experimental studies to study the influence of the DSP-30 electric arc furnace on the operation of the electrical network in the smelting shop of the «Li Da Metal Technology» LLC JV enterprise and at the “Sanoat” substation, which supplies the smelting shop with electricity. Oscillograms of voltage and current changes were recorded before and during the melting process. The resulting oscillograms were analyzed using the Fast Fourier Transformation method.</p></sec><sec><title>Conclusion</title><p>Conclusion. Based on the analysis of the results of the above experimental studies, we can conclude the following: Electric arc furnaces are powerful nonlinear consumers with a dynamically changing electrical load. Therefore, when the furnace is operating in the melting mode, the voltage and current quality indicators sharply deteriorate, and the shape of the curves differs sharply from sinusoidal; The effects of deterioration in power quality indicators are clearly manifested in the secondary winding of a furnace transformer, in the buses of an industrial substation that supplies the station with electricity, then these effects appear in a much more damped state and can be recorded by special analyzers and oscilloscopes; When an electric arc furnace is operating in melting mode, the voltage value differs from the nominal value from 300 to 500 Volts. If the SVG power factor compensation device is not connected in dynamic mode, the voltage deviation can reach 5000 V. In conclusion, it should be noted that the electric arc furnace, as a nonlinear and highly variable consumer, has a significant impact on the deterioration of the quality indicators of electricity. From the point of view of the theory of electric energy quality indicators, this situation is a clear example of the negative impact on the quality indicators of a power source from the consumer.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>дуговая печь</kwd><kwd>показатели качества электроэнергии</kwd><kwd>короткая сеть</kwd><kwd>негативное влияние на сеть</kwd><kwd>высшие гармоники</kwd></kwd-group><kwd-group xml:lang="en"><kwd>arc furnace</kwd><kwd>power quality indicators</kwd><kwd>short network</kwd><kwd>negative impact on the network</kwd><kwd>higher harmonics</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Zbigniew Łukasik and Zbigniew Olczykowski, (2020). Estimating the Impact of Arc Furnaces on the Quality of Power in Supply Systems. 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