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    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="edn" pub-id-type="custom">XZHFWA</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16656</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16656</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Энергетика</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Energy industry</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Assessment of reliability parameters for workshop power supply circuits in mining enterprises with single-transformer substations under various redundancy methods</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Оценка параметров надежности схем цехового электроснабжения горных предприятий с однотрансформаторными подстанциями при различных способах их резервирования</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Petrova</surname>
            <given-names>Renata M.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Петрова</surname>
              <given-names>Р. М.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Petrova</surname>
              <given-names>Renata M.</given-names>
            </name>
          </name-alternatives>
          <email>1998renata@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0009-0004-2508-8771</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Казанский государственный энергетический университет (Казань, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Kazan State Power Engineering University (Kazan, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Gracheva</surname>
            <given-names>Elena I.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Грачева</surname>
              <given-names>Е. И.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Gracheva</surname>
              <given-names>Elena I.</given-names>
            </name>
          </name-alternatives>
          <email>grachieva.i@bk.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-5379-847X</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Казанский государственный энергетический университет (Казань, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Kazan State Power Engineering University (Kazan, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2025-12-23">
        <day>23</day>
        <month>12</month>
        <year>2025</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2026</year>
      </pub-date>
      <volume>277</volume>
      <fpage>81</fpage>
      <lpage>93</lpage>
      <history>
        <date date-type="received" iso-8601-date="2025-01-31">
          <day>31</day>
          <month>01</month>
          <year>2025</year>
        </date>
        <date date-type="accepted" iso-8601-date="2025-07-02">
          <day>02</day>
          <month>07</month>
          <year>2025</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2026-02-27">
          <day>27</day>
          <month>02</month>
          <year>2026</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2025 Р. М. Петрова, Е. И. Грачева</copyright-statement>
        <copyright-statement xml:lang="en">© 2025 Renata M. Petrova, Elena I. Gracheva</copyright-statement>
        <copyright-year>2025</copyright-year>
        <copyright-holder xml:lang="ru">Р. М. Петрова, Е. И. Грачева</copyright-holder>
        <copyright-holder xml:lang="en">Renata M. Petrova, Elena I. Gracheva</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/16656">https://pmi.spmi.ru/pmi/article/view/16656</self-uri>
      <abstract xml:lang="ru">
        <p>С усложнением электротехнического оборудования горных предприятий актуализируются разработка и исследование способов повышения надежности технических устройств, входящих в систему электроснабжения. Статья посвящена оценке параметров надежности схем участков цеховых сетей горных предприятий с однотрансформаторными подстанциями 10 и 0,4 кВ и различными способами их резервирования. Цель исследования – проведение оценки параметров надежности различных способов резервирования схем электроснабжения объектов с трансформаторными подстанциями на среднем и низком напряжении (СН и НН) относительно электропотребителей распределительного устройства низкого напряжения горно-добывающих предприятий. Объектом исследования является система электроснабжения цеха вспомогательного производства горно-добывающего предприятия (Кемерово). В работе исследуются параметры надежности участков сети – вероятность безотказной (исправной) работы P(t), вероятность появления отказа Q(t), параметр потока отказов ωсхемы и время наработки на отказ Тнар.отк для следующих вариантов схем: без резервирования; с резервированием на СН; с резервированием на НН; с двойным резервированием (на СН и НН). Данные расчетов показывают, что время наработки на отказ для схемы без резервирования в 2,04 и в 2,11 раз меньше, чем для схем с резервированием на НН и на СН соответственно, и в 2,8 раз меньше, чем для схемы с двойным резервированием. Резервирование является технически и экономически обоснованным методом повышения параметра P(t) системы электроснабжения объекта. Полученные результаты могут быть интегрированы в проектирование систем электроснабжения объектов (для оптимизации структурной схемы и выбора рационального способа резервирования элементов); разработку программ технического обслуживания (для формирования обоснованных регламентов технического обслуживания и ремонтов); создание систем мониторинга надежности (для организации непрерывного контроля текущего состояния оборудования цехов горных предприятий).</p>
      </abstract>
      <abstract xml:lang="en">
        <p>With the increasing complexity of electrical equipment in mining enterprises, the development and analysis of methods to enhance the reliability of technical devices within power supply systems are becoming increasingly relevant. This article focuses on assessing the reliability parameters of workshop network circuits in mining enterprises equipped with single-transformer substations operating at 10 and 0.4 kV, considering various redundancy methods. Research objective is to evaluate the reliability parameters of different redundancy methods for power supply circuits in facilities with transformer substations at medium voltage (MV) and low voltage (LV), with respect to low-voltage switchgear consumers in mining operations. Research target is the power supply system of an auxiliary production workshop at a mining enterprise (Kemerovo). The study examines the following network reliability parameters: probability of failure-free (normal) operation, P(t); probability of failure occurrence, Q(t); failure flow rate, ωcircuit; time between failures (TBF), ТTBF. The analysis covers the following circuit configurations: without redundancy; with redundancy at MV; with redundancy at LV; with dual redundancy (at both MV and LV). Estimation results indicate that the TBF for the nonredundant circuit is 2.04 times lower than for the LV redundancy circuit, 2.11 times lower than for the MV redundant circuit, and 2.8 times lower than for the dual redundant circuit. Redundancy proves to be a technically and economically justified method for improving the P(t) parameter of the facility’s power supply system. The obtained results can be integrated into power supply system design (to optimize structural circuits and select rational redundancy methods for components), maintenance program development (to develop justified maintenance and repair schedules), reliability monitoring system development (to enable continuous monitoring of equipment status in mining enterprise workshops).</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>горное предприятие</kwd>
        <kwd>цех</kwd>
        <kwd>петлевая схема</kwd>
        <kwd>кольцевая схема</kwd>
        <kwd>логическая схема надежности</kwd>
        <kwd>параметр потока отказов</kwd>
        <kwd>время наработки на отказ</kwd>
        <kwd>резервирование</kwd>
        <kwd>двойное резервирование</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>mining enterprise</kwd>
        <kwd>workshop</kwd>
        <kwd>looped circuit</kwd>
        <kwd>circular circuit</kwd>
        <kwd>reliability logic diagram</kwd>
        <kwd>failure flow rate</kwd>
        <kwd>time between failures</kwd>
        <kwd>redundancy</kwd>
        <kwd>dual redundancy</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
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