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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 custom-type="elpub" pub-id-type="custom">energy-8</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>ОПРЕДЕЛЕНИЕ ЭФФЕКТИВНОСТИ ЗАМЕНЫ ТРАНСФОРМАТОРОВ С ДЛИТЕЛЬНЫМ СРОКОМ ЭКСПЛУАТАЦИИ</article-title><trans-title-group xml:lang="en"><trans-title>DETERMINATION OF REPLACEMENT EFFICIENCY OF TRANSFORMERS WITH LONG SERVICE LIFE</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>Фурсанов</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Fursanov</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор технических наук, профессор</p></bio><bio xml:lang="en"><p>Professor, PhD in Engineering</p></bio><email xlink:type="simple">nik.petrashevitch@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>Петрашевич</surname><given-names>Н. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrashevich</surname><given-names>N. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аспирант</p></bio><bio xml:lang="en"><p>Graduate student</p></bio><email xlink:type="simple">nik.petrashevitch@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>16</day><month>06</month><year>2014</year></pub-date><volume>0</volume><issue>3</issue><elocation-id>13–19</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Фурсанов М.И., Петрашевич Н.С., 2014</copyright-statement><copyright-year>2014</copyright-year><copyright-holder xml:lang="ru">Фурсанов М.И., Петрашевич Н.С.</copyright-holder><copyright-holder xml:lang="en">Fursanov M.I., Petrashevich N.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://energy.bntu.by/jour/article/view/8">https://energy.bntu.by/jour/article/view/8</self-uri><abstract><p>Показана неэффективность применения существующих экономических моделей для определения времени замены трансформаторов с длительными сроками службы, так как они не учитывают реальных изменений параметров трансформаторов в процессе эксплуатации. Разработана усовершенствованная математическая модель для оценки эффективности замены силовых трансформаторов на подстанциях распределительных электрических сетей с учетом «старения» их физических параметров. Разработанная модель позволяет определять как время оптимальной замены, так и экономически целесообразный срок эксплуатации трансформаторов.</p></abstract><trans-abstract xml:lang="en"><p>The paper shows non-efficient application of the existing economical models for determination of replacement time for transformers with long service life because these models do not take into account real changes in transformer parameters during its operational period. An improved mathematical model for estimation of replacement efficiency of power transformers which are used at substations of power distribution networks has been developed in the paper. The model makes it possible to determine an optimum replacement time and economically justified operational service life of the transformers.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>замена трансформаторов</kwd><kwd>математическая модель</kwd><kwd>оценка эффективности</kwd><kwd>срок эксплуатации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>transformer replacement</kwd><kwd>mathematical model</kwd><kwd>efficiency estimation</kwd><kwd>operational service life</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">Трансформаторы силовые. Общие технические условия: ГОСТ 11677-85. - Введ. 24.09.1985. - М.: Государственный комитет СССР по стандартам, 1985. - 48 с.</mixed-citation><mixed-citation xml:lang="en">State Standard 11677-85. Power Transformers. General Technical Specifications. Moscow, USSR State Committee on Standards, 1985. 48 p. 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