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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">probener</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. ПРОБЛЕМЫ ЭНЕРГЕТИКИ</journal-title><trans-title-group xml:lang="en"><trans-title>Power engineering: research, equipment, technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-9903</issn><issn pub-type="epub">2658-5456</issn><publisher><publisher-name>Kazan State Power Engineering  University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30724/1998-9903-2020-22-3-78-89</article-id><article-id custom-type="elpub" pub-id-type="custom">probener-1362</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>ЭЛЕКТРОТЕХНИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Дифференциальный способ обнаружения витковых замыканий в трехфазном трансформаторе</article-title><trans-title-group xml:lang="en"><trans-title>The differential method of detecting coil circuitsfaults in three-phase transformer</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>Мустафин</surname><given-names>Р. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Mustafin</surname><given-names>R. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мустафин Рамиль Гамилович – канд. физико-математических наук, доцент, доцент кафедры «Релейная защита и автоматизация электроэнергетических систем»</p></bio><bio xml:lang="en"><p>Ramil G. Mustafin</p></bio><email xlink:type="simple">ramil.mustafin@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>Ярыш</surname><given-names>Р. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Yarish</surname><given-names>R. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ярыш Равия Фоатовна – канд. техн. наук, доцент, доцент кафедры «Релейная защита и автоматизация электроэнергетических систем»</p></bio><bio xml:lang="en"><p>Raviya F. Yarish</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский государственный энергетический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State Power Engineering University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>08</day><month>09</month><year>2020</year></pub-date><volume>22</volume><issue>3</issue><fpage>78</fpage><lpage>89</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мустафин Р.Г., Ярыш Р.Ф., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Мустафин Р.Г., Ярыш Р.Ф.</copyright-holder><copyright-holder xml:lang="en">Mustafin R.G., Yarish R.F.</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.energyret.ru/jour/article/view/1362">https://www.energyret.ru/jour/article/view/1362</self-uri><abstract><p>Измерены напряжения холостого хода, пропорциональные соответствующим магнитным потокам трехфазного трансформатора общего назначения с использованием дифференциальных методов, направленных на обнаружение витковых замыканий в обмотках трехстержневых трансформаторов.</p><p>Стандартный метод определения витковых замыканий основан на измерении тока холостого хода и измерении мощности потерь. В дополнение к ним для определения наличия витковых замыканий в трехфазных линейных трансформаторах предлагается применять дифференциальные методы, хорошо известные в релейной защите. Методы основаны на том, что витковое замыкание увеличивает магнитное сопротивление фазного стержня сердечника трансформатора, в фазной обмотке которого присутствует витковое замыкание. При подаче однофазного напряжения на обмотку фазы В в обмотках боковых фаз А и С линейного трехфазного трансформатора должны индуцироваться одинаковые по фазе и амплитуде напряжения. При соединении обмоток фазы А и С встречно, и измерении дифференциального сигнала разности напряжений фаз А и С происходит следующее. Если в исходном, неповрежденном состоянии, дифференциальный сигнал был близок к нулю, то витковое замыкание в одной из боковых фаз А или С вносит дисбаланс, и дифференциальный сигнал возрастает. Дифференциальный сигнал легко измерим на фоне близкого к нулю дифференциального сигнала в неповрежденном состоянии трансформатора, что обусловливает высокую чувствительность дифференциального метода к наличию витковых замыканий. При возникновении виткового замыкания на обмотке центральной фазы В необходимо учитывать дифференциальный сигнал в неповрежденном состоянии трансформатора.</p></abstract><trans-abstract xml:lang="en"><p>Idle voltages proportional to corresponding magnetic flows of three-phase transformer of general purpose are measured using differential methods aimed at detection of inter turn faultin windings of three-leg transformers.</p><p>The standard method of determining the inter turn fault in the transformer windings is based on measuring idling current and measuring loss power. In addition, differential methods well known in relay protection are proposed to determine the presence of inter turn faultin three-phase linear transformers. The methods are based on the fact that the inter turn fault increases the magnetic resistance of the phase rod of the transformer core, in the phase winding of which there is a inter turn fault. When one-phase voltage is applied to the winding of phase B in the windings of side phases A and C of the linear three-phase transformer, the same voltage phase and amplitude shall be induced. When phase A and C windings are connected in opposition and differential signal is measured, voltage difference of phases A and C is as follows. If, in the original, intact state, the differential signal was close to zero, the inter turn faultin one of the side phases A or C introduces an imbalance and the differential signal increases. The differential signal is easily measured against the background of the near zero differential signal in the intact state of the transformer, which causes a high sensitivity of the differential method to the presence of inter turn fault. In case of a inter turn faulton the winding of the central phase B, it is necessary to take into account the differential signal in the intact state of the transformer.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>магнитная система</kwd><kwd>дифференциальный метод</kwd><kwd>магнитный поток</kwd></kwd-group><kwd-group xml:lang="en"><kwd>magnetic system</kwd><kwd>differential method</kwd><kwd>magnetic flux</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">Bhide R S.; Srinivas M.S.; Ilia Voloh. Detection of inter-turn fault in transformers at incipient level // Detection of inter-turn fault in transformers at incipient level, 2014 International Conference on Electrical Machines (ICEM), 2-5 Sept. 2014.</mixed-citation><mixed-citation xml:lang="en">Bhide RS; Srinivas MS, et al. Detection of inter-turn fault in transformers at incipient level. 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