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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">energy</journal-id><journal-title-group><journal-title xml:lang="ru">Энергетика. Известия высших учебных заведений и энергетических объединений СНГ</journal-title><trans-title-group xml:lang="en"><trans-title>ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1029-7448</issn><issn pub-type="epub">2414-0341</issn><publisher><publisher-name>BNTU</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/1029-7448-2016-59-4-301-312</article-id><article-id custom-type="elpub" pub-id-type="custom">energy-1017</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>ЭЛЕКТРОЭНЕРГЕТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRICAL POWER ENGINEERING</subject></subj-group></article-categories><title-group><article-title>АДАПТИВНАЯ МАТЕМАТИЧЕСКАЯ МОДЕЛЬ ТЕПЛОВЫХ ПРОЦЕССОВ КОСИНУСНОГО СИЛОВОГО КОНДЕНСАТОРА</article-title><trans-title-group xml:lang="en"><trans-title>ADAPTIVE MATHEMATICAL MODEL OF THERMAL PROCESSES IN A COSINE POWER CAPACITOR</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>Зализный</surname><given-names>Д. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Zalizny</surname><given-names>D. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адрес для переписки: Зализный Дмитрий Иванович – Гомельский государственный технический университет имени П. О. Сухого, просп. Октября, 48, корп. 2,246746, г. Гомель, Республика Беларусь Тел.: +375 232 40-57-64 kaf_power@gstu.by</p></bio><bio xml:lang="en"><p>Address for correspondence: Zalizny Dmitry I. – P. O. Sukhoi Gomel State Technical University, 48/2 October Ave., 246746, Gomel, Republic of Belarus  Tel.: +375 232 40-57-64 kaf_power@gstu.by</p></bio><email xlink:type="simple">kaf_power@gstu.by</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>Широков</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Shirokov</surname><given-names>O. G.</given-names></name></name-alternatives><email xlink:type="simple">kaf_power@gstu.by</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>Широков</surname><given-names>Г. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Shirokov</surname><given-names>G. O.</given-names></name></name-alternatives><email xlink:type="simple">kaf_power@gstu.by</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>Капанский</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kapanskiy</surname><given-names>A. A.</given-names></name></name-alternatives><email xlink:type="simple">kaf_power@gstu.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Гомельский государственный технический университет имени П. О. Сухого</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Pavel Sukhoi State Technical University of Gomel</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>09</day><month>08</month><year>2016</year></pub-date><volume>59</volume><issue>4</issue><fpage>301</fpage><lpage>312</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Зализный Д.И., Широков О.Г., Широков Г.О., Капанский А.А., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Зализный Д.И., Широков О.Г., Широков Г.О., Капанский А.А.</copyright-holder><copyright-holder xml:lang="en">Zalizny D.I., Shirokov O.G., Shirokov G.O., Kapanskiy 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://energy.bntu.by/jour/article/view/1017">https://energy.bntu.by/jour/article/view/1017</self-uri><abstract><p>Существующие системы защиты и диагностики не способны выявлять анормальный нагрев силовых конденсаторов, обусловленный развитием их внутренних неисправностей. Предлагается методика, позволяющая на ранней стадии обнаружить такой нагрев. Данная методика состоит из алгоритмов, аппаратной части в виде микропроцессорного прибора и основана на непрерывном измерении температуры поверхности корпуса конденсатора, температуры внешней окружающей среды, напряжений и токов со стороны источника питания. На основе измеренных величин выполнен расчет потерь активной мощности в конденсаторе и температуры наиболее нагретой точки его диэлектрика. После этого осуществлен анализ среднесуточных значений расчетной температуры и при обнаружении тенденции непрерывного роста этих значений сформированы диагностические сигналы уровней опасности анормального нагрева: низкий, средний, высокий и очень высокий. Приведенные алгоритмы разработаны эвристически. Окончательное их формирование возможно только после многолетней эксплуатации предлагаемой системы диагностирования на реальных объектах. Внедрение разработанной системы снизит вероятность внезапного отказа конденсаторных установок и соответственно повысит надежность системы электроснабжения предприятия.</p></abstract><trans-abstract xml:lang="en"><p>The existing protection and diagnostics systems are unable to detect the power capacitor abnormal heating caused by the development of its malfunctions. A diagnosis technique is presented that provides discovering such a heating at its early manifestation. The technique includes algorithms and an apparatus component in a form of a digital device, and it is based on continuous measuring of a capacitor body surface temperature, ambient temperature, voltages and currents from the power source. On the basis of measured values the active power losses in the capacitor and the temperature of the hottest point of its dielectric were calculated. Thereafter, the calculated average daily values of the temperature was analyzed, and, should the tendency of permanent increase of these values is detected, the diagnosis alarms of danger levels of abnormal heating are formed, viz. a low level, an average level, a high level and a very high level. The presented algorithms have been developed heuristically. Their final formation is possible only after years of operation of the proposed diagnosis system applied to the real objects. Because of application of the diagnosis system the probability of capacitor units’ failure will be lower and thus the dependability of the power supply may be higher. The implementation of the developed system will reduce the probability of sudden failure of capacitor units, and, correspondingly, will increase the reliability of the electricity supply system of an enterprise.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>силовой конденсатор</kwd><kwd>диагностика</kwd><kwd>анормальный нагрев</kwd><kwd>система диагностирования</kwd></kwd-group><kwd-group xml:lang="en"><kwd>power capacitor</kwd><kwd>diagnostics</kwd><kwd>abnormal heating</kwd><kwd>diagnostic system</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">Кучинский, Г. С. 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