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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">gscience</journal-id><journal-title-group><journal-title xml:lang="en">Mining Science and Technology (Russia)</journal-title><trans-title-group xml:lang="ru"><trans-title>Горные науки и технологии</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2500-0632</issn><publisher><publisher-name>The National University of Science and Technology MISiIS (NUST MISIS)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/2500-0632-2024-01-213</article-id><article-id custom-type="elpub" pub-id-type="custom">gscience-836</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="en"><subject>POWER ENGINEERING, AUTOMATION, AND ENERGY PERFORMANCE</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЭНЕРГЕТИКА, АВТОМАТИЗАЦИЯ И ЭНЕРГОЭФФЕКТИВНОСТЬ</subject></subj-group></article-categories><title-group><article-title>Stability of a controlled sucker-rod pump unit drive under operating conditions and during voltage dips in the electrical network</article-title><trans-title-group xml:lang="ru"><trans-title>Устойчивость регулируемого привода штанговой насосной установки в рабочих режимах и при провалах напряжения в сети</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7772-0095</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ершов</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Ershov</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Сергеевич Ершов – доктор технических наук, профессор кафедры теоретической электротехники и электрификации нефтяной и газовой промышленности</p><p>Scopus ID 56261333000</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Mikhail S. Ershov – Dr. Sci. (Eng.), Professor, Department of Theoretical Electrical Engineering and Electrification of Oil and Gas Industry</p><p>Scopus ID 56261333000</p><p>Moscow</p></bio><email xlink:type="simple">msershov@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-9189-8029</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ефимов</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Efimov</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгений Сергеевич Ефимов – аспирант кафедры теоретической электротехники и электрификации нефтяной и газовой промышленности</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Evgeniy S. Efimov – PhD-Student, Department of Theoretical Electrical Engineering and Electrification of Oil and Gas Industry</p><p>Moscow</p></bio><email xlink:type="simple">efimow.evgeniy@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Российский государственный университет нефти и газа (НИУ) им. И. М. Губкина<country>Россия</country></aff><aff xml:lang="en">Gubkin Russian State University of Oil and Gas (National Research University)<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>17</day><month>10</month><year>2024</year></pub-date><volume>9</volume><issue>3</issue><fpage>292</fpage><lpage>303</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ershov M.S., Efimov E.S., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ершов М.С., Ефимов Е.С.</copyright-holder><copyright-holder xml:lang="en">Ershov M.S., Efimov E.S.</copyright-holder><license 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://mst.misis.ru/jour/article/view/836">https://mst.misis.ru/jour/article/view/836</self-uri><abstract><p>The use of a variable frequency drive (VFD) for sucker-rod pump units (SRPUs), widely employed in oil extraction, enhances the energy and technological efficiency of oil production and reduces equipment wear. However, its application is hindered by unstable operation under insufficient balancing of the SRPU and sensitivity to short-term voltage dips, which frequently occur in the extensive electrical networks of oil fields. Insufficient balancing of the SRPU leads to the occurrence of a period within the pumping cycle where the  motor operates in generator mode, caused by the unevenness and reversal of the resistance torque of the working mechanism. The motor’s transition to generator mode, as well as voltage dips in the power supply, causes the voltage in the DC link of the VFD to exceed the set limits, resulting in the drive being shut down. To investigate the processes during the operation of sucker-rod pump units and to test methods for mitigating the negative impact of generator mode and voltage dips in the power supply network on the VFD, a model of the “power grid – variable frequency SRPU drive” system with a load characteristic of this application was developed in Matlab Simulink. A series of experiments were conducted, and the results were analyzed. The suppression function of the generator mode was examined, and the feasibility of its application to real SRPUs was evaluated. The use of an uninterruptible power supply system based on battery energy storage to prevent operational interruptions during different levels of power supply voltage dips was analyzed. The resulting model can be used for general analysis of operability and stability, as well as for verifying the correct selection of key elements in the design of sucker-rod pump unit systems with variable frequency drives.</p></abstract><trans-abstract xml:lang="ru"><p>Применение частотно-регулируемого привода штанговых насосных установок (ШНУ), широко используемых для добычи нефти, повышает энергетическую и технологическую эффективность добычи нефти, способствует снижению износа оборудования, но его применение сдерживается неустойчивой работой при недостаточной уравновешенности ШНУ и чувствительностью к кратковременным провалам напряжения, часто возникающим в протяженных электрических сетях нефтепромыслов. Недостаточная уравновешенность ШНУ приводит к появлению в цикле качания периода работы двигателя в генераторном режиме, обусловленном неравномерностью и изменением направления момента сопротивления рабочего механизма. Переход двигателя в генераторный режим так же, как и провалы питающего напряжения, приводит к выходу напряжения в звене постоянного тока преобразователя частоты за установленные пределы и к отключению преобразователя. Для исследования процессов при работе штанговых насосных установок и проверки способов устранения негативного влияния на преобразователь частоты генераторного режима, а также провалов напряжения питающей электросети с целью повышения устойчивости системы в среде Matlab, Simulink создана модель «электрическая сеть – частотно-регулируемый привод ШНУ» с характерной для данного применения нагрузкой, проведен ряд опытов и выполнен анализ результатов. Рассмотрена программная функция подавления генераторного режима и дана оценка возможности ее применения для реальных установок. Проанализировано применение системы бесперебойного питания на основе аккумуляторных накопителей энергии для предотвращения прерывания работы при разных уровнях провалов питающего напряжения. Модель, полученная в результате работы, может быть применена для общего анализа работоспособности и устойчивости, а также проверки правильности подбора ключевых элементов проектируемых систем штанговых насосных установок с частотно-регулируемым приводом.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>штанговая насосная установка</kwd><kwd>частотно-регулируемый привод</kwd><kwd>преобразователь частоты</kwd><kwd>преобразователь постоянного тока</kwd><kwd>аккумуляторная батарея</kwd><kwd>генераторный режим</kwd><kwd>провал напряжения</kwd><kwd>компьютерное моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>sucker-rod pump unit</kwd><kwd>variable frequency drive</kwd><kwd>frequency converter</kwd><kwd>DC converter</kwd><kwd>battery storage</kwd><kwd>generator mode</kwd><kwd>voltage dip</kwd><kwd>computer modeling</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">Ярыш Р. 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