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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">10.21285/1814-3520-2020-5-1053-1068</article-id><article-id custom-type="elpub" pub-id-type="custom">ipolytech-436</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>Исследование самозапуска асинхронных двигателей 0,4 кВ собственных нужд электростанций</article-title><trans-title-group xml:lang="en"><trans-title>Studying self-starting of 0.4 kV induction motors of power plant auxiliary needs</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>Маджидов</surname><given-names>А. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Majidov</surname><given-names>A. Sh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Маджидов Абдулло Шарифхуджаевич, аспирант</p><p>111250, г. Москва, ул. Красноказарменная, 14 </p></bio><bio xml:lang="en"><p>Abdullo Sh. Majidov, Postgraduate Student</p><p>14, Krasnokazarmennaya St., Moscow 111250 </p></bio><email xlink:type="simple">abdullomajidi@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский университет "Московский энергетический институт"</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research University "Moscow Power Engineering Institute"</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>12</day><month>11</month><year>2020</year></pub-date><volume>24</volume><issue>5</issue><fpage>1053</fpage><lpage>1068</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Маджидов А.Ш., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Маджидов А.Ш.</copyright-holder><copyright-holder xml:lang="en">Majidov A.S.</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/436">https://ipolytech.elpub.ru/jour/article/view/436</self-uri><abstract><p>Цель работы – исследование обеспечения самозапуска асинхронных двигателей собственных нужд электростанций и подстанций, а также взаимного влияния двигателей друг на друга при кратковременных провалах напряжения и после восстановления напряжения на шинах, к которым подключены данные двигатели. Объектом исследований явилась действующая VIII секция мощностью 0,4 кВ системы собственных нужд с 9-ю асинхронными двигателями теплоэлектроцентрали № 1 г. Душанбе (Республика Таджикистан). Имитационное моделирование проводилось в программном комплексе Electrical Transient Analyzer Program (США) с использованием алгебраических и упрощенных дифференциальных уравнений для определения значений показателей статической и динамической устойчивости собственных нужд электростанций и подстанций. В результате моделирования определены значения показателей статической и динамической устойчивости системы собственных нужд электрических станций. На основании полученных результатов построены границы статической и динамической устойчивости собственных нужд электростанций и подстанций, а также определены условия реализации оптимального самозапуска, которые позволяют обеспечить бесперебойную работу ответственных механизмов с асинхронными двигателями при провалах напряжения. Разработанная методика для исследования самозапуска асинхронных двигателей собственных нужд электростанций и подстанций позволяет более точно определить значения напряжений статической устойчивости и время динамической устойчивости. Разработанная имитационная модель позволяет уточнить и определить успешность самозапуска асинхронного двигателя в системах собственных нужд электростанций и подстанций. Разработанная методика рекомендуется для более точного выбора параметров срабатывания релейной защиты и автоматики, а также технологических защит в системах собственных нужд электростанций и подстанций с асинхронными двигателями для более надежной работы основного и вспомогательного технологического оборудования.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of this work is to study the self-starting of induction motors for the auxiliary needs of power plants and substations as well as the mutual influence of motors on each other under short-term voltage dips and after voltage recovery on the buses to which these motors are connected. The object of the research is the operating VIII section with the capacity of 0.4 kV of the auxiliary service system with 9 induction motors of the heat and power plant no.1 in the city of Dushanbe (Republic of Tajikistan). Simulation modeling was carried out in the software package Electrical Transient Analyzer Program (USA) using algebraic and simplified differential equations to determine the values of indicators of static and dynamic stability of auxiliary needs of power plants and substations. As a result of modeling, the values of indicators of static and dynamic stability of the auxiliary needs system of power stations are determined. Based on the results obtained the margins of static and dynamic stability of auxiliary needs of power plants and substations are constructed and the conditions for implementing the optimal self-start, which allow to ensure uninterrupted operation of responsible mechanisms with induction motors at voltage dips are determined. The developed methods for studying the self-starting of power plant and substation auxiliary need induction motors ensures more accurate determination of the values of static stability voltages and dynamic stability time. The developed simulation model allows to specify and determine the success of induction motor self-starting in the systems of power plant and substation auxiliary needs. The developed methods are recommended for more precise selection of operating values for relay protection and automation as well as technological protection in the systems of auxiliary needs of power plants and substations with induction motors for more reliable operation of the main and auxiliary technological equipment.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>самозапуск</kwd><kwd>асинхронный двигатель</kwd><kwd>собственные нужды</kwd><kwd>устойчивость</kwd><kwd>технологическая защита</kwd><kwd>тепловая электростанция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>self-starting</kwd><kwd>induction motor</kwd><kwd>auxiliary needs</kwd><kwd>stability</kwd><kwd>process protections</kwd><kwd>thermal power plant</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">Стыскин А.В., Уразбахтина Н.Г. 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