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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">ipolytech</journal-id><journal-title-group><journal-title xml:lang="ru">iPolytech Journal</journal-title><trans-title-group xml:lang="en"><trans-title>iPolytech Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2782-4004</issn><issn pub-type="epub">2782-6341</issn><publisher><publisher-name>Irkutsk National Research Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/1814-3520-2025-1-51-65</article-id><article-id custom-type="elpub" pub-id-type="custom">ipolytech-913</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>ЭНЕРГЕТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>POWER ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Контроль температуры токопроводящей жилы защищённых проводов воздушных линий по значениям температуры на поверхности изоляции</article-title><trans-title-group xml:lang="en"><trans-title>Temperature control of aerial current-carrying conductors by insulation surface temperature</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0650-1880</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гиршин</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Girshin</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гиршин Станислав Сергеевич, к.т.н., доцент, доцент кафедры электроснабжения промышленных предприятий</p><p>644050, г. Омск, пр. Мира, 11</p></bio><bio xml:lang="en"><p>Stanislav S. Girshin, Cand. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Power Supply of Industrial Enterprises</p><p>11 Mira pr., Omsk 644050</p></bio><email xlink:type="simple">stansg@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/0000-0002-4707-2023</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Горюнов</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Goryunov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Горюнов Владимир Николаевич, д.т.н., профессор, заведующий кафедрой электроснабжения промышленных предприятий</p><p>644050, г. Омск, пр. Мира, 11</p></bio><bio xml:lang="en"><p>Vladimir N. Goryunov, Dr. Sci. (Eng.), Professor, Head of the Department of Power Supply of Industrial Enterprises</p><p>11 Mira pr., Omsk 644050</p></bio><email xlink:type="simple">vladimirgoryunov2016@yandex.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/0000-0002-7866-5630</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петрова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петрова Елена Владимировна, старший преподаватель кафедры электроснабжения промышленных предприятий</p><p>644050, г. Омск, пр. Мира, 11</p></bio><bio xml:lang="en"><p>Elena V. Petrova, Senior Lecturer of the Department of Power Supply оf Industrial Enterprises</p><p>11 Mira pr., Omsk 644050</p></bio><email xlink:type="simple">evpetrova2000@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Криволапов</surname><given-names>В А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krivolapov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Криволапов Владислав Александрович, аспирант</p><p>644050, г. Омск, пр. Мира, 11</p></bio><bio xml:lang="en"><p>Vladislav A. Krivolapov, Postgraduate Student</p><p>11 Mira pr., Omsk 644050</p></bio><email xlink:type="simple">KrivolapovVladislav1998@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Деев</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Deev</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Деев Владислав Александрович, инженер кафедры электроснабжения промышленных предприятий</p><p>644050, г. Омск, пр. Мира, 11</p></bio><bio xml:lang="en"><p>Vladislav A. Deev, Engineer of the Department of Power Supply of Industrial Enterprises</p><p>11 Mira pr., Omsk 644050</p></bio><email xlink:type="simple">vlad_deev@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щербаков</surname><given-names>К. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Shcherbakov</surname><given-names>K. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щербаков Кирилл Сергеевич, инженер кафедры электроснабжения промышленных предприятий</p><p>644050, г. Омск, пр. Мира, 11</p></bio><bio xml:lang="en"><p>Kirill S. Shcherbakov, Engineer of the Department of Power Supply of Industrial Enterprises</p><p>11 Mira pr., Omsk 644050</p></bio><email xlink:type="simple">kirya.shcherbakov.01@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/0000-0002-3046-2092</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Николаев</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikolayev</surname><given-names>N. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николаев Михаил Юрьевич, к.т.н., доцент, доцент кафедры электроснабжения промышленных предприятий</p><p>644050, г. Омск, пр. Мира, 11,</p></bio><bio xml:lang="en"><p>Mikhail Yu. Nikolayev, Cand. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Power Supply of Industrial Enterprises</p><p>11 Mira pr., Omsk 644050</p></bio><email xlink:type="simple">munp@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Омский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Omsk State Technical 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>26</day><month>03</month><year>2025</year></pub-date><volume>29</volume><issue>1</issue><fpage>51</fpage><lpage>65</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гиршин С.С., Горюнов В.Н., Петрова Е.В., Криволапов В.А., Деев В.А., Щербаков К.С., Николаев М.Ю., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Гиршин С.С., Горюнов В.Н., Петрова Е.В., Криволапов В.А., Деев В.А., Щербаков К.С., Николаев М.Ю.</copyright-holder><copyright-holder xml:lang="en">Girshin S.S., Goryunov V.N., Petrova E.V., Krivolapov V.A., Deev V.A., Shcherbakov K.S., Nikolayev N.Y.</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://ipolytech.elpub.ru/jour/article/view/913">https://ipolytech.elpub.ru/jour/article/view/913</self-uri><abstract><p>Целью исследований является разработка и численная проверка методики определения температуры жилы изолированного провода на основе измерений электрического тока и температуры поверхности изоляции при использовании технологии Smart Grid. В исследованиях использовалась математическая модель теплового режима провода в форме алгебраического уравнения четвертой степени, для решения которого был применен метод Феррари. Моделирование температурных полей, необходимое для получения результатов сравнения, производилось методом конечных элементов COMSOL Multiphysics. Идентификация температуры жилы с учетом погрешностей измерения осуществлялась на основе метода наименьших квадратов совместно с методом золотого сечения. На основе метода конечных элементов изучено распределение температуры в сечении защищенного провода СИП–3, а также на поверхности его изоляции. В результате моделирования получены зависимости изменения максимальной и минимальной температуры поверхности изоляции провода в зависимости от скорости ветра при предельно допустимой температуре жилы. Показано, что разность максимальной и минимальной температуры поверхности может достигать примерно 25°C при скорости ветра 3–4 м/с. По результатам исследований получена функция, минимизация которой позволяет найти температуру токопроводящей жилы защищенного провода по значениям температуры на поверхности изоляции. Сравнительный анализ разработанного метода определения температуры жилы и метода конечных элементов дает погрешность расчетов в 0,44°C при условии точного задания значения электрического тока. Результаты исследования указывают на необходимость учета неравномерности распределения температуры на поверхности изоляции защищенных проводников при мониторинге линий электропередачи. Разработанная методика расчета температуры жилы по измерительным данным дает высокую точность при любой практически возможной неравномерности температуры поверхности, если погрешность измерения тока не превышает 5%.</p></abstract><trans-abstract xml:lang="en"><p>This study aims to develop and carry out numerical analysis of a methodology for determining the temperature of conductors of insulated wires, which implies measuring electric current and insulation surface temperature as well as using Smart Grid technology. We used a mathematical model of thermal conditions for conductors in the form of an algebraic fourth-degree equation and the Ferrari method to solve this equation. Simulation of temperature ﬁelds providing comparison results was carried out using the ﬁnite element method in the COMSOL Multiphysics. The temperature of conductors was measured taking into account measurement errors and using the least squares method together with the golden-section search. The ﬁnite element method made it possible to study temperature distribution in the section of SIP-3 shielded wire as well as in its insulation surface. The dependencies of changes in the maximum and minimal temperatures of the wire insulation surface were obtained as a result of simulation; these dependencies were inﬂuenced by wind speed changes at the maximum permissible temperature of conductors. The difference between the maximum and minimum surface temperatures was shown to reach approximately 25°C at wind speeds of 3–4 m/s. Our study resulted in function, the minimization of which makes it possible to ﬁnd the temperature of current-carrying conductors of shielded wires by values of the insulation surface temperature. Comparative analysis of the developed method for determining the temperature of conductors and the ﬁnite element method provided the calculation error of 0.44°C given accurate settings of electric current value. The study results substantiate the need to take into account the nonuniformity in temperature distribution on the insulation surface of shielded conductors when monitoring power lines. The developed methodology for calculating the temperature of conductors by measurement data provides high accuracy at almost any nonuniformity in the surface temperature provided that the current measurement error equals 5% or less.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>уравнение теплового баланса</kwd><kwd>пропускная способность</kwd><kwd>защищенный провод</kwd><kwd>воздушная линия</kwd><kwd>метод конечных элементов</kwd><kwd>температура жилы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heat balance equation</kwd><kwd>transmission capacity</kwd><kwd>protected wire</kwd><kwd>overhead line</kwd><kwd>finite element method</kwd><kwd>core temperature</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">Hasan M.K., Ahmed M.M., Musa S.S., Islam S., Abdullah S.N.H.S., Hossain E. 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