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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">energsecurity</journal-id><journal-title-group><journal-title xml:lang="ru">Надежность и безопасность энергетики</journal-title><trans-title-group xml:lang="en"><trans-title>Safety and Reliability of Power Industry</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1999-5555</issn><issn pub-type="epub">2542-2057</issn><publisher><publisher-name>ООО «НПО Энергобезопасность»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24223/1999-5555-2021-14-4-189-195</article-id><article-id custom-type="elpub" pub-id-type="custom">energsecurity-782</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>ПРОЕКТИРОВАНИЕ, ИССЛЕДОВАНИЯ, РАСЧЕТЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DESIGN, RESEARCH, CALCULATIONS</subject></subj-group></article-categories><title-group><article-title>Экспериментальные исследования усталостной прочности и поверхностного электросопротивления алюминиевого провода воздушных линий электропередач</article-title><trans-title-group xml:lang="en"><trans-title>Experimental studies of fatigue strength and surface electrical resistance of aluminum wire of overhead power transmission lines</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кульков</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kul’kov</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>пр. Ленина 69, 404110 Волжский</p></bio><bio xml:lang="en"><p>Lenina str. 69, Volzhskiy 404110</p></bio><email xlink:type="simple">vikulkov@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>Тышкевич</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyshkevich</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>пр. Ленина 69, 404110 Волжский</p></bio><bio xml:lang="en"><p>Lenina str. 69, Volzhskiy 404110</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курьянов</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuryanov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>пр. Ленина 69, 404110 Волжский</p></bio><bio xml:lang="en"><p>Lenina str. 69, Volzhskiy 404110</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Султанов</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Sultanov</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>пр. Ленина 69, 404110 Волжский</p></bio><bio xml:lang="en"><p>Lenina str. 69, Volzhskiy 404110</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Норов</surname><given-names>Д. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Norov</surname><given-names>D. Sh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>пр. Ленина 69, 404110 Волжский</p></bio><bio xml:lang="en"><p>Lenina str. 69, Volzhskiy 404110</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нарыкова</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Narykova</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Политехническая ул. 26, 194021 Санкт-Петербург</p></bio><bio xml:lang="en"><p>Politekhnicheskaya 26, St Petersburg 194021</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кадомцев</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kadomtsev</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Политехническая ул. 26, 194021 Санкт-Петербург</p></bio><bio xml:lang="en"><p>Politekhnicheskaya 26, St Petersburg 194021</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Прасолов</surname><given-names>Н. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Prasolov</surname><given-names>N. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Политехническая ул. 26, 194021 Санкт-Петербург</p></bio><bio xml:lang="en"><p>Politekhnicheskaya 26, St Petersburg 194021</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Брунков</surname><given-names>П. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Brunkov</surname><given-names>P. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Политехническая ул. 26, 194021 Санкт-Петербург</p></bio><bio xml:lang="en"><p>Politekhnicheskaya 26, St Petersburg 194021</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лихачев</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Likhachev</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Политехническая ул. 26, 194021 Санкт-Петербург</p></bio><bio xml:lang="en"><p>Politekhnicheskaya 26, St Petersburg 194021</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соколов</surname><given-names>Р. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolov</surname><given-names>R. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Политехническая ул. 26, 194021 Санкт-Петербург</p></bio><bio xml:lang="en"><p>Politekhnicheskaya 26, St Petersburg 194021</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Левин</surname><given-names>А А.</given-names></name><name name-style="western" xml:lang="en"><surname>Levin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Политехническая ул. 26, 194021 Санкт-Петербург</p></bio><bio xml:lang="en"><p>Politekhnicheskaya 26, St Petersburg 194021</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский университет «Московский Энергетический Институт», филиал в г. Волжском</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research University Moscow Power Engineering Institute, Department of Energy Volzhskiy</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Физико-технический институт им. А.Ф. Иоффе Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ioffe Institute</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>27</day><month>01</month><year>2022</year></pub-date><volume>14</volume><issue>4</issue><fpage>189</fpage><lpage>195</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кульков В.Г., Тышкевич В.Н., Курьянов В.Н., Султанов М.М., Норов Д.Ш., Нарыкова М.В., Кадомцев А.Г., Прасолов Н.Д., Брунков П.Н., Лихачев А.И., Соколов Р.П., Левин А.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Кульков В.Г., Тышкевич В.Н., Курьянов В.Н., Султанов М.М., Норов Д.Ш., Нарыкова М.В., Кадомцев А.Г., Прасолов Н.Д., Брунков П.Н., Лихачев А.И., Соколов Р.П., Левин А.А.</copyright-holder><copyright-holder xml:lang="en">Kul’kov V.G., Tyshkevich V.N., Kuryanov V.N., Sultanov M.M., Norov D.S., Narykova M.V., Kadomtsev A.G., Prasolov N.D., Brunkov P.N., Likhachev A.I., Sokolov R.V., Levin A.A.</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.sigma08.ru/jour/article/view/782">https://www.sigma08.ru/jour/article/view/782</self-uri><abstract><p>Воздействие ветра на провода воздушных линий передач приводит к появлению их вибрации, а также колебаний с различными амплитудами. В местах подвески провода возникают повреждения структуры металла усталостного типа. Это избыточное по сравнению с равновесным количество вакансий, дислокации, границы зерен и блоков. Дефектная структура деградирует в направлении образования микронесплошностей и трещин. Зарождение и развитие зоны повреждений происходит с поверхности провода. Для предотвращения разрыва необходимо осуществлять контроль развития этой зоны в процессе эксплуатации линии без демонтажа провода. Для повышения точности оценки уровня накопления усталостных повреждений, предельных состояний провода рекомендуется разработка способов, основанных на измерении электрического сопротивления материала провода при развитии усталостных повреждений. Предложен метод контроля состояния поверхностного слоя путем измерения электрического сопротивления на высоких частотах. Толщина контролируемого слоя определяется частотой измерительного сигнала вследствие наличия поверхностного эффекта. Для эффективного контроля глубина проникновения поля в проводник должна быть соизмерима с толщиной дефектного слоя. Для экспериментального исследования были взяты образцы нового провода и проводов после различного периода эксплуатации на действующих линиях.По результатам статических испытаний определен предел прочности и степень нелинейности кривой растяжения. Приведены результаты экспериментальных исследований усталостной прочности и поверхностного электросопротивления отдельной алюминиевой проволоки провода А50. Образцы испытывались на усталость при нагрузках, близких к условному пределу выносливости. Были проведены измерения поверхностного сопротивления проволок до и после усталостных испытаний в диапазоне частот 200 Гц – 2 МГц. Исследования показали наличие зависимости поверхностного сопротивления от степени развития усталостных повреждений что может использоваться для диагностики накопления усталостных повреждений. </p></abstract><trans-abstract xml:lang="en"><p>The effect of wind on the wires of overhead transmission lines leads to their vibration, as well as oscillations of different amplitudes. At places where the wire is suspended, damage to the metal structure of the fatigue type occurs. This is an excessive number of vacancies, dislocations, grain boundaries and blocks compared to the equilibrium one. The defective structure degrades in the direction of the formation of micro-gaps and cracks. The generation and development of the damage zone occurs from the surface of the wire. To prevent a rupture, it is necessary to monitor the development of this zone during the operation of the line without dismantling the wire. To improve the accuracy of assessing the level of accumulation of fatigue damage, the limiting states of the wire, it is recommended to develop methods based on measuring the electrical resistance of the wire material during the development of fatigue damage. A method for monitoring the state of the surface layer by measuring electrical resistance at high frequencies is proposed. The thickness of the controlled layer is determined by the frequency of the measuring signal due to the presence of a surface effect. For effective control, the depth of penetration of the field into the conductor must be commensurate with the thickness of the defective layer. For experimental research, samples were taken of a new wire and wires after various periods of operation on existing lines. According to the results of static tests, the tensile strength and the degree of nonlinearity of the tensile curve were determined. The results of experimental studies of fatigue strength and surface electrical resistance of a separate aluminum wire of A50 conductor are presented. The samples were tested for fatigue under loads close to the conditional endurance limit. The surface resistance of the wires was measured before and after fatigue tests in the frequency range 200 Hz – 2 MHz. The studies have shown the dependence of surface resistance on the degree of development of fatigue damage, which can be used to diagnose the accumulation of fatigue damage.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Усталостная прочность</kwd><kwd>надежность линии</kwd><kwd>техническое состояние</kwd><kwd>поверхностный эффект</kwd><kwd>электрическое сопротивление</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fatigue strength</kwd><kwd>line reliability</kwd><kwd>technical condition</kwd><kwd>surface effect</kwd><kwd>electrical resistance</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке государственного задания РФ, грант № 0720-2020-0025 «Разработка методов и анализ способов достижения высокого уровня безопасности и конкурентоспособности объектов энергосистем на основе цифровых технологий» с использованием оборудования и программного обеспечения Центра совместного использования «Материаловедение и диагностика в перспективных технологиях» (Физико-технический институт РАН им. А. Ф. Иоффе (Ioffe Institute), Санкт-Петербург, Россия).</funding-statement><funding-statement xml:lang="en">This work was carried out with the financial support of the state assignment RF No. 0720-2020-0025 "Development of methods and analysis of ways to achieve a high level of safety and competitiveness of objects of energy systems based on digital technologies" using the equipment and software of the Center of Joint Use "Materials Science and Diagnostics in Advanced Technologies" (Ioffe Institute, St. Petersburg, Russia).</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">Kuryanov V. N., Kul’kov V. G., Firsov Yu. V., Norov D. Sh., Popova M. V. 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