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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">10.21122/1029-7448-2026-68-2-128-139</article-id><article-id custom-type="elpub" pub-id-type="custom">energy-2455</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 оптимальных параметров грунтовой засыпки при прокладке силовых кабельных</article-title><trans-title-group xml:lang="en"><trans-title>Determination of Optimal Parameters of the Ground Filling During the Laying of Power Cable Lines</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>Высоцкий</surname><given-names>М. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Vysotski</surname><given-names>M. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адрес для переписки:Высоцкий Максим Эдуардович –Белорусский национальный технический университет,просп. Независимости, 65/2,220013, г. Минск, Республика Беларусь.Тел.: +375 33 661-76-75elsyst@bntu.by</p></bio><bio xml:lang="en"><p>Address for correspondence:Vysotski Maksim E. –Belаrusian National Technical University,65/2, Nezavisimosty Ave.,220013, Minsk, Republic of Belarus.Tel.: +375 33 661-76-75<ext-link xlink:href="https://energy.bntu.by/jour/manager/importexport/plugin/mailto:" ext-link-type="uri">elsyst@bntu.by</ext-link></p></bio><email xlink:type="simple">elsyst@bntu.by</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>2025</year></pub-date><pub-date pub-type="epub"><day>14</day><month>04</month><year>2025</year></pub-date><volume>68</volume><issue>2</issue><fpage>128</fpage><lpage>139</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Высоцкий М.Э., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Высоцкий М.Э.</copyright-holder><copyright-holder xml:lang="en">Vysotski M.E.</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/2455">https://energy.bntu.by/jour/article/view/2455</self-uri><abstract><p>В данной статье рассмотрена проблема технико-экономической эффективности применения материалов с повышенной теплопроводностью при засыпке траншеи силовых кабельных линий. Удельное тепловое сопротивление грунта существенно влияет на допустимые токи кабелей и, как следствие, на выбор их сечения. При высыхании грунта или его изначально высоком тепловом сопротивлении пропускная способность проводников снижается, что зачастую вынуждает использовать кабели большего сечения для обеспечения требуемого тока нагрузки. Одним из способов улучшения условий охлаждения является применение специальной, более дорогой по сравнению с грунтовой, засыпки с пониженными значениями теплового сопротивления. Тогда встает вопрос о технико-экономической целесообразности такого решения, поскольку более дорогой материал может не оправдать себя в ряде случаев. Предложена методика оптимизации, основанная на вычислении приведенных затрат, учитывающих стоимость кабеля, строительство линий и эксплуатационные расходы. Разработанная модель учитывает влияние как нормального, так и послеаварийного режимов работы. Показано, что повышение пропускной способности за счет специальной засыпки может позволить снизить сечение кабеля на одну ступень и, таким образом, компенсировать затраты на более дорогой материал. В противном случае применение специальных засыпок становится нецелесообразным. Для решения оптимизационной задачи использован генетический алгоритм, реализованный в среде MS Excel. Приведены результаты расчетных примеров, показывающих, что предлагаемая методика и алгоритм могут использоваться для различных напряжений и условий прокладки, позволяя проектировщику выбрать эффективные параметры конструкции кабельной линии</p></abstract><trans-abstract xml:lang="en"><p>The present article discusses the problem of the technical and economic efficiency of using materials with increased thermal conductivity when filling trenches of power cable lines. The specific thermal resistance of the soil significantly affects the permissible cable currents and, as a result, the choice of their cross-section. When the soil dries out or it is initially of high thermal resistance, the carrying capacity of the conductors decreases, which often forces the use of cables with a larger cross-section to provide the required load current. One of the ways to improve cooling conditions is to use a special backfill with lower thermal resistance values, which is more expensive than the ground one. This raises the question of the feasibility of such a solution, since more expensive materials may not pay off in some cases. An optimization technique is proposed based on the calculation of reduced costs, taking into account the cost of cable, line construction and operating costs. The model that has been developed takes into account the influence of both normal and post-emergency operation modes. It is shown that increasing the cable current capacity due to special backfilling can reduce the cable cross-section by one step and, thus, compensate for the cost of more expensive material. Otherwise, the use of special backfills becomes impractical. To solve the optimization problem, a genetic algorithm implemented in the MS Excel environment was used. The results of calculation examples are presented, showing that the proposed methodology and algorithm can be used for various voltage and laying conditions, allowing the designer to select effective parameters of the cable line design.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>силовой кабель</kwd><kwd>пропускная способность</kwd><kwd>удельное тепловое сопротивление засыпки</kwd><kwd>техни-ко-экономическая оптимизация</kwd><kwd>генетический алгоритм</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">Weedy, B. Underground Transmission of Electric Power / B. Weedy. New York : John Wiley and Sons. 1980. 232 p.</mixed-citation><mixed-citation xml:lang="en">Weedy B. 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