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  <front>
    <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 pub-id-type="doi">10.31897/PMI.2021.2.14</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-14011</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/14011</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Электромеханика и машиностроение</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Electromechanics and mechanical engineering</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Improving the efficiency of relay protection at a mining  and processing plant</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Повышение эффективности релейной защиты  на горно-обогатительном комбинате</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Klyuev</surname>
            <given-names>Roman V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Клюев</surname>
              <given-names>Р. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Klyuev</surname>
              <given-names>Roman V.</given-names>
            </name>
          </name-alternatives>
          <email>kluev-roman@rambler.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-3777-7203</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Московский политехнический университет (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Moscow Polytechnic University (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Bosikov</surname>
            <given-names>Igor I.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Босиков</surname>
              <given-names>И. И.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Bosikov</surname>
              <given-names>Igor I.</given-names>
            </name>
          </name-alternatives>
          <email>igor.boss.777@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0001-8930-4112</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Северо-Кавказский горно-металлургический институт (государственный технологический университет) (Владикавказ, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">North Caucasian Mining and Metallurgical Institute (State Technological University) (Vladikavkaz, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Gavrina</surname>
            <given-names>Oksana A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Гаврина</surname>
              <given-names>О. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Gavrina</surname>
              <given-names>Oksana A.</given-names>
            </name>
          </name-alternatives>
          <email>Gavrina-Oksana@yandex.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-9712-9075</contrib-id>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Северо-Кавказский горно-металлургический институт (государственный технологический университет) (Владикавказ, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">North Caucasian Mining and Metallurgical Institute (State Technological University) (Vladikavkaz, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2021-06-24">
        <day>24</day>
        <month>06</month>
        <year>2021</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2021</year>
      </pub-date>
      <volume>248</volume>
      <fpage>300</fpage>
      <lpage>311</lpage>
      <history>
        <date date-type="received" iso-8601-date="2020-10-05">
          <day>05</day>
          <month>10</month>
          <year>2020</year>
        </date>
        <date date-type="accepted" iso-8601-date="2021-03-30">
          <day>30</day>
          <month>03</month>
          <year>2021</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2021-06-24">
          <day>24</day>
          <month>06</month>
          <year>2021</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2021 Р. В. Клюев, И. И. Босиков, О. А. Гаврина</copyright-statement>
        <copyright-statement xml:lang="en">© 2021 Roman V. Klyuev, Igor I. Bosikov, Oksana A. Gavrina</copyright-statement>
        <copyright-year>2021</copyright-year>
        <copyright-holder xml:lang="ru">Р. В. Клюев, И. И. Босиков, О. А. Гаврина</copyright-holder>
        <copyright-holder xml:lang="en">Roman V. Klyuev, Igor I. Bosikov, Oksana A. Gavrina</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/14011">https://pmi.spmi.ru/pmi/article/view/14011</self-uri>
      <abstract xml:lang="ru">
        <p>В работе приведены результаты построения эффективной релейной защиты в системе электроснабжения горно-металлургического комбината (ГОК). Дана краткая характеристика ГОК, приведены схемы электроснабжения и замещения, используемые для расчета токов короткого замыкания. Выполнен статистический анализ повреждений в электрической сети ГОК, позволяющий сделать выводы о характере распределения повреждений. Анализ зарегистрированных повреждений показывает, что их значительная часть – это однофазные замыкания на землю, которые в большинстве случаев переходят в многофазные короткие замыкания, отключаемые максимальной токовой защитой. С целью повышения эффективности и надежности работы релейной защиты уточнена схема электроснабжения ГОК и проведен ее анализ. Произведен расчет токов короткого замыкания, что позволило рассчитать уставки релейной защиты и дать рекомендации по месту ее установки и настройки, чтобы обеспечить нормальную работу потребителей электроэнергии. Для уменьшения количества повреждений кабельной вставки на линии, отходящей на административно-бытовой комбинат (АБК), и увеличения надежности питания потребителей целесообразно осуществить разделение мощностей существующей линии напряжением 10 кВ на две параллельные путем прокладки второй линии. На линии, отходящей на АБК, рекомендуется установить токовую отсечку, целесообразность установки которой показали расчеты. Это уменьшит вероятность повреждаемости кабельной вставки. Данные по токам уставки максимальной токовой защиты и токовой отсечки приведены на карте селективности.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The paper presents the results of constructing effective relay protection in the power supply system of a mining and processing plant (MPP). A brief description of the MPP is given, the power supply and substitution circuits used to calculate the short-circuit currents are given. A statistical analysis of failures in the electric network of the MPP has been carried out, which makes it possible to draw conclusions about the nature of failures ranges. Analysis of the registered faults shows that a significant part of them are line-to-earth faults, which in most cases turn into multiphase short circuits, which are interrupted by overcurrent protection. In order to improve the efficiency and reliability of the relay protection, the power supply scheme of the MPP was refined and analyzed. The calculation of the short-circuit currents was made, which made it possible to calculate the settings of the relay protection and give recommendations on the place of its installation and adjustment in order to ensure the normal operation of electricity consumers. To reduce the number of failures to the cable insert on the line leaving the administrative and household complex (AHC), and to increase the reliability of power supply to consumers, it is advisable to divide the capacities of the existing 10 kV line into two parallel ones by laying a second line. It is recommended to install a current cut-off on the line outgoing to the AHC, the feasibility of the installation of which was shown by calculations. This will reduce the chance of failures to the cable gland. Data on the setting currents of overcurrent protection and current cut-off are given on the selectivity card.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>горно-обогатительный комбинат</kwd>
        <kwd>релейная защита</kwd>
        <kwd>токи короткого замыкания</kwd>
        <kwd>уставка</kwd>
        <kwd>система электро-снабжения</kwd>
        <kwd>повреждения</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>mining and processing plant</kwd>
        <kwd>relay protection</kwd>
        <kwd>short circuit currents</kwd>
        <kwd>setting</kwd>
        <kwd>power supply system</kwd>
        <kwd>failures</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
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