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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">10.21122/1029-7448-2024-67-6-488-500</article-id><article-id custom-type="elpub" pub-id-type="custom">energy-2423</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>Выбор конструктивного устройства кабельных линий напряжением 10 кВ по критерию минимума  приведенных затрат</article-title><trans-title-group xml:lang="en"><trans-title>The Choice of a Construction Arrangement for Cable Lines  with a Voltage of 10 kV According to the Criterion of the Minimum Expected Cost</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 33 661-76-75elsyst@bntu.by</p><p> </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>Белоруссий национальный технический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarussian National Technical University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>04</day><month>12</month><year>2024</year></pub-date><volume>67</volume><issue>6</issue><fpage>488</fpage><lpage>500</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Высоцкий М.Э., 2024</copyright-statement><copyright-year>2024</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/2423">https://energy.bntu.by/jour/article/view/2423</self-uri><abstract><p>В статье рассматривается вопрос выбора оптимальной конструкции кабельных линий напряжением 10 (20, 35) кВ с изоляцией из сшитого полиэтилена. Анализируются варианты использования трехили одножильных кабелей, прокладываемых треугольником или в плоскости. Методологической основой работы служит принцип минимизации приведенных затрат, учитывающий как капиталовложения, так и ежегодные издержки, включая потери электроэнергии в кабелях. В рамках исследования построена номограмма экономических интервалов, позволяющая определять оптимальные сечения жил кабелей и граничные условия применения трехи одножильных кабелей в зависимости от расчетной токовой нагрузки. Показано, что при существующей номенклатуре трехжильных кабелей с максимальным сечением жилы до 630 мм2 одножильные кабели могут быть экономически целесообразны только при сечении жил 800 мм2 и выше. Установлено, что приведенные затраты на прокладку одножильных кабелей в плоскости при двухстороннем заземлении экранов всегда оказываются больше, чем при прокладке треугольником. Этот эффект обусловлен увеличением как капитальных затрат, так и потерь электроэнергии в экранах кабелей. Для повышения экономичности кабельных линий в работе предлагается расширить номенклатуру трехжильных кабелей, включив в нее кабели с максимально возможным сечением жилы. Это позволит увеличить диапазон токовых нагрузок, в котором применение трехжильных кабелей будет экономически оправданным. Представленные в статье результаты могут использоваться при проектировании новых кабельных линий, анализе эффективности существующих, а также при модернизации и реконструкции городских кабельных сетей среднего напряжения.</p></abstract><trans-abstract xml:lang="en"><p>The article considers the issue of choosing the optimal construction arrangement  of cable lines with a voltage of 10 (20, 35) kV with cross-linked polyethylene insulation. The options for using three or single-core cables laid in a triangle or in a plane are analyzed. The methodological basis of the work is the principle of minimizing the expected costs, taking into  account both capital investments and annual costs, including losses of electrical energy in cables. Within the framework of the study, a nomogram of economic intervals was scheduled, which makes it possible to determine the optimal cable core sections and boundary conditions for the use of threeand single-core cables, depending on the calculated current load. It is shown that with the existing nomenclature of three-core cables with a maximum core cross-section up to 630 mm2, single-core cables can be economically feasible only with a core cross-section of 800 mm2  and above. It has been discovered that the expected costs for laying single-core cables in the plane with two-way grounding of screens always turn out to be higher than when laying a triangle.  This effect is due to an increase in both capital costs and power losses in cable screens. To increase the efficiency of cable lines, it is proposed to expand the range of three-core cables by including cables with the maximum possible core cross-section. This will make possible to increase  the range of current loads in which the use of three-core cables will be economically justifiable. The results presented in the article can be used in the design of new cable lines, the analysis of  the effectiveness of existing ones, as well as in the modernization and reconstruction of urban medium-voltage cable networks.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>способ прокладки</kwd><kwd>траншея</kwd><kwd>трехжильные кабели</kwd><kwd>одножильные кабели</kwd><kwd>номограмма</kwd><kwd>метод экономических интервалов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>method of laying</kwd><kwd>trench</kwd><kwd>three-core cables</kwd><kwd>single-core cables</kwd><kwd>nomogram</kwd><kwd>method  of economic intervals</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">Liu, C. Comparison and Selection of Three-Core Cable and Single-Core Cable / C. Liu // IOP conference series: Earth and Environmental Science. 2019. Vol. 300, No. 4. 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