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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">10.30724/1998-9903-2022-24-2-73-86</article-id><article-id custom-type="elpub" pub-id-type="custom">probener-2212</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>ЭЛЕКТРОТЕХНИЧЕСКИЕ КОМПЛЕКСЫ И СИСТЕМЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTROTECHNICAL COMPLEXES AND SYSTEMS</subject></subj-group></article-categories><title-group><article-title>Разработка модели для анализа способов снижения несимметрии напряжений в системах электроснабжения</article-title><trans-title-group xml:lang="en"><trans-title>Model development for the analysis of reducing voltage asymmetry methods in power supply systems</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1681-184X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бирюлин</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Biryulin</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бирюлин Владимир Иванович - канд. техн. наук, доцент кафедры электроснабжения</p><p>г. Курск</p></bio><bio xml:lang="en"><p>Vladimir I. Biryulin - сand. sci. (techn.), associate professor, Department «Power supply»</p><p>Kursk</p></bio><email xlink:type="simple">bir1956@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/0000-0003-2304-9547</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Куделина</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudelina</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Куделина Дарья Васильевна - канд. техн. наук, доцент кафедры электроснабжения</p><p>г. Курск</p></bio><bio xml:lang="en"><p>Daria V. Kudelina - сand. sci. (techn.), associate professor, Department «Power supply»</p><p>Kursk</p></bio><email xlink:type="simple">mary_joy@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Юго-Западный государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Southwest State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>13</day><month>06</month><year>2022</year></pub-date><volume>24</volume><issue>2</issue><fpage>72</fpage><lpage>85</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бирюлин В.И., Куделина Д.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Бирюлин В.И., Куделина Д.В.</copyright-holder><copyright-holder xml:lang="en">Biryulin V.I., Kudelina D.V.</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/2212">https://www.energyret.ru/jour/article/view/2212</self-uri><abstract><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Рассмотреть вопросы обеспечения качества электроэнергии в системах электроснабжения. Показать, что качество электрической энергии при работе систем электроснабжения в определенных случаях может нарушаться, в том числе и из-за неравномерной нагрузки фаз электрической сети, что приводит к значительной несимметрии напряжений в этой сети. Возникновение большой разницы между напряжениями по фазам электрической сети неизбежно приводит к отрицательным воздействиям на различное электрооборудование как энергоснабжающих организаций, так и на электроприемники потребителей, создавая тем самым условия для возникновения технологического и электромагнитного ущербов, являющихся причинами появления финансовых потерь и других негативных последствий при нарушениях качества электроэнергии.</p></sec><sec><title>МЕТОДЫ</title><p>МЕТОДЫ. При решении поставленной задачи применялся метод математического моделирования системы электроснабжения, реализованный средствами MatLab®.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. Приведены результаты измерений несимметрии напряжения, полученные авторами статьи при мониторинге качества электроэнергии. Данные результаты показывают, что в процессе работы систем электроснабжения возникают режимы, при которых несимметрия напряжений по нулевой последовательности значительно превосходит допустимые значения.</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ. Показано на компьютерной модели простейшей системы электроснабжения, что снижение сопротивления нулевого проводника может служить довольно эффективным мероприятием по снижению несимметрии напряжений, особенно при преобладании индуктивной нагрузки в составе потребителей.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>THE PURPOSE</title><p>THE PURPOSE. To consider the issues of ensuring the quality of electricity in power supply systems. Show that the quality of electrical energy during the operation of power supply systems in certain cases may be violated, including due to uneven loading of the electrical network phases, which leads to significant voltage asymmetry in this network. The occurrence of a large difference between the voltages in the phases of the electrical network inevitably leads to negative impacts on various electrical equipment of both power supply organizations and consumer electrical receivers, thereby creating conditions for the occurrence of technological and electromagnetic damage, which are the causes of financial losses and other negative consequences in case of quality violations electricity.</p></sec><sec><title>METHODS</title><p>METHODS. When solving the problem, we used the method of the power supply system mathematical modeling, implemented by means of MatLab®.</p></sec><sec><title>RESULTS</title><p>RESULTS. The article presents the results of voltage asymmetry measurements obtained by the authors while monitoring the quality of electricity. These results show that during the operation of power supply systems, modes arise in which the voltage asymmetry in the zero sequence significantly exceeds the permissible values.</p></sec><sec><title>CONCLUSION</title><p>CONCLUSION. The article shows on a computer model of the simplest power supply system that reducing the resistance of the neutral conductor can serve as a fairly effective measure to reduce voltage unbalance, especially when inductive loads predominate among consumers.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>качество</kwd><kwd>электроэнергия</kwd><kwd>несимметрия</kwd><kwd>обратная последовательность</kwd><kwd>нулевая последовательность</kwd><kwd>компьютерное моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>quality</kwd><kwd>electricity</kwd><kwd>asymmetry</kwd><kwd>negative sequence</kwd><kwd>zero sequence</kwd><kwd>computer simulation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено в рамках гранта Президента Российской Федерации для государственной поддержки молодых российских ученых - кандидатов наук MK-5109.2022.4 “Разработка автоматизированной системы выявления объектов, оказывающих негативное влияние на качество электроэнергии”.</funding-statement><funding-statement xml:lang="en">The publication was carried out with the Russian Federation President Grant financial support for young scientists state support - Candidates of Science, project No. MK-5109.2022.4 “An automated system development for identifying objects which have a negative impact on power quality”.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Коверникова Л.И., Суднова В.В., Шамонов Р.Г. 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