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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">10.24223/1999-5555-2018-11-3-222-226</article-id><article-id custom-type="elpub" pub-id-type="custom">energsecurity-588</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>Улучшенная аналитическая модель обледенения проводов ЛЭП</article-title><trans-title-group xml:lang="en"><trans-title>Enhanced analytical model of power transmission line icing</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>Тимофеева</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Timofeeva</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Центр энергетических систем.</p><p>Ул. Нобеля, 3, 121205 , Москва</p></bio><bio xml:lang="en"><p>Nobelya str., 3, 121205, Moscow</p></bio><email xlink:type="simple">M.Timofeeva@skoltech.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сколковский институт науки и технологий (Сколтех)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Skoltech, CES</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>21</day><month>10</month><year>2018</year></pub-date><volume>11</volume><issue>3</issue><fpage>222</fpage><lpage>226</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тимофеева М.В., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Тимофеева М.В.</copyright-holder><copyright-holder xml:lang="en">Timofeeva M.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.sigma08.ru/jour/article/view/588">https://www.sigma08.ru/jour/article/view/588</self-uri><abstract><p>Аварии на линиях электропередачи, связанные с обледенением компонентов ЛЭП, в частности, проводов приводят к большим экономическим потерям в России. В связи с отсутствием возможности достоверного прогнозирования и оценки последствий погодных условий, способствующих обледенению проводов ЛЭП, сетевые службы зачастую вынуждены проводить выезды на потенциальные места аварий вслепую. Это приводит к большим материальным и временным потерям, при том, что среднее время восстановительных послеаварийных работ на высоковольтных ЛЭП занимает 5 – 10 дней.</p><p>Для эффективного прогнозирования и своевременного предотвращения негативных последствий образования ледяных отложения на проводах ЛЭП разработана аналитическая модель, описывающая рост ледяной муфты на поверхности электрического провода. За основу модели взята широко применяемая аналитическая модель [<xref ref-type="bibr" rid="cit1">1</xref>], дополненная зависимостью роста ледяной муфты от угла между потоком ветра и проводом и от напряжённости электрического поля провода. Сравнение результатов, полученных с применением разработанной модели и модели [<xref ref-type="bibr" rid="cit1">1</xref>] показало, что с уменьшением угла между потоком ветра и проводом интенсивность роста ледяных отложений значительно падает. Показано, что напряжённость электрического поля провода слабо меняет траектории движения капель воды.</p><p>Приведён вывод о незначительном влиянии напряжённости электрического поля провода на рост ледяной муфты на нём. Указано, что значение толщины стенки ледяных отложений, получаемое по разработанной модели, должно быть увеличено при определённых погодных условиях и конструкционных параметрах ЛЭП. Разработанная модель может быть дополнена другими физическими явлениями, оказывающими влияние на обледенение проводов, и в дальнейшем внедрена в работу энергетических компаний для мониторинга состояния ЛЭП и проведения противогололёдных мероприятий.</p></abstract><trans-abstract xml:lang="en"><p>Accidents in power transmission lines under icing conditions, in particular, those of cables, cause a great economic damage in Russia. Because of the lack of the possibility to forecast and evaluate reliably the consequences of weather conditions contributing to icing of transmisison line cables, power grid services often have to go to the place of a potential accident relying on guesswork. This leads to considerable losses of time and material resources, while the average recovery time of a damaged high voltage power transmission line is 5–10 days.</p><p>For the effective prediction and timely prevention of negative consequences of icing of on power line cables, an analytical model that describes the growth of ice on the surface of the electrical cable has been developed. The model is based on a widely applicable analytical model of [<xref ref-type="bibr" rid="cit1">1</xref>], supplemented with dependence of the growth of ice sleeve on the angle between the wind direction and the cable, and on the electric field strength of the cable.</p><p>The results obtained using the new analytical model and the [<xref ref-type="bibr" rid="cit1">1</xref>], model have been compared and show that as the angle between the wind direction and the cable decreases, the intensity of the ice growth decreases significantly. At the same time, the strength of the electric field of the cable affects negligibly the trajectory of water droplets.</p><p>A conclusion is drawn about insignificance of electrical field strength of the electric cable as a factor of growth of ice deposits. It is stated that the ice thickness value obtained using the developed model can be increased under specific weather conditions and design parameters of transmission lines. The obtained model can be improved by using other physical effects that affect icing of electric cables. Further, the model can be introduced in operation of energy companies to monitor the condition of power transmission lines and to carry out anti-icing activities.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>обледенение</kwd><kwd>гололёдная муфта</kwd><kwd>линия электропередачи</kwd><kwd>гололёдно-изморозевые образования</kwd><kwd>электрическое поле</kwd></kwd-group><kwd-group xml:lang="en"><kwd>icing</kwd><kwd>ice sleeve</kwd><kwd>power transmission line</kwd><kwd>ice-frost formations</kwd><kwd>electric field</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">Goodwin E., Mozer J., Di Gioia A., Power B. Predicting ice and snow loads for transmission lines. In the Proceedings of the First IWAIS 1983; 1(1): 267–273.</mixed-citation><mixed-citation xml:lang="en">Goodwin E., Mozer J., Di Gioia A., Power B. Predicting ice and snow loads for transmission lines. 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