omnaОмский научный вестникOmsk Scientific Bulletin1813-82252541-7541Омский государственный технический университет10.25206/1813-8225-2024-191-110-116HVMHTVomna-176Research ArticleЭНЕРГЕТИКА И ЭЛЕКТРОТЕХНИКАENERGY AND ELECTRICAL ENGINEERINGИсследование влияния магнитного поля на характеристики частичных разрядовStudy of the magnetic field effect on partial discharges characteristicsПоляковД. А.PolyakovD. A.

Поляков Дмитрий Андреевич - старший преподаватель кафедры «Теоретическая и общая электротехника» ОмГТУ, SPIN-код: 2004-2148. AuthorID (РИНЦ): 733001. AuthorID (SCOPUS): 56825433300.

Омск

Polyakov Dmitry Andreevich, Senior Lecturer of Theoretical and General Electrical Engineering Department, Omsk State Technical University (OmSTU).

SPIN-code: 2004-2148. AuthorID (RSCI): 733001. AuthorID (SCOPUS): 56825433300.

Omsk

polyakowdmitry@yandex.ruХолмовМ. А.KholmovM. A.

Холмов Михаил Александрович - магистрант гр. ЭЭм-213 кафедры «Теоретическая и общая электротехника» ОмГТУ, SPIN-код: 2561-3270. AuthorID (РИНЦ): 1087396.

Омск

Kholmov Mikhail Alexandrovich - Undergraduate, gr. ЭЭм-213 of Theoretical and General Electrical Engineering Department, OmSTU, SPIN-code: 2561-3270 AuthorID (RSCI):1087396.

Omsk

misha97h@gmail.comНикитинК. И.NikitinK. I.

Никитин Константин Иванович - доктор технических наук, доцент (Россия), заведующий кафедрой «Теоретическая и общая электротехника» ОмГТУ, SPIN-код: 3733-8763. AuthorID (РИНЦ): 641865. AuthorID (SCOPUS): 56825489500.

Омск

Nikitin Konstantin Ivanovich - Doctor of Technical Sciences, Associate Professor, Dean of Theoretical and General Electrical Engineering Department, OmSTU, SPIN-code: 3733-8763. AuthorID (RSCI): 641865. AuthorID (SCOPUS): 56825489500.

Omsk

nki@ngs.ruОмский государственный технический университетРоссияOmsk State Technical UniversityRussian Federation20243009202403110116Copyright © Поляков Д.А., Холмов М.А., Никитин К.И., 20242024Поляков Д.А., Холмов М.А., Никитин К.И.Polyakov D.A., Kholmov M.A., Nikitin K.I.This work is licensed under a Creative Commons Attribution 4.0 License.https://onv.omgtu.ru/jour/article/view/176

Статья посвящена исследованию зависимостей характеристик частичных разрядов от магнитной индукции. Разработана конструкция экспериментальной установки. Она позволяет прикладывать как высокое напряжение, так и ток, сопоставимый с рабочим. Установка включает в себя источник высокого напряжения (прибор для испытания диэлектриков), схему протекания тока, высоковольтный трансформатор тока и образец кабеля с СПЭ-изоляцией. Работа электрической схемы экспериментальной установки была смоделирована с помощью программного обеспечения. Моделирование показало, что при наличии эксплуатационной электрической прочности изоляции трансформатора тока высоковольтный потенциал не может контактировать с контуром протекания тока. После этого было проведено моделирование магнитного поля внутри изоляционного слоя. На основе разработанной конструкции была создана экспериментальная установка. Для регистрации частичных разрядов в образце кабеля создавался искусственный дефект. Результаты моделирования магнитного поля позволили оценить магнитную индукцию в поле искусственного дефекта кабеля. Далее были проведены экспериментальные исследования по оценке влияния магнитного поля тока жилы кабеля на характеристики частичных разрядов. Результаты измерений показали снижение среднего кажущегося заряда частичных разрядов и мощности частичных разрядов с увеличением тока. Кроме того, сравнивались формы сигналов, но существенных различий не обнаружено. Магнитное поле тока может оказывать влияние на характеристики частичных разрядов в долгосрочной перспективе из-за возможного влияния на направление роста электрической древовидной структуры.

The paper is devoted to the study of the dependences of the characteristics of partial discharges on magnetic induction. The design of the experimental setup has been developed. It allows applying both high voltage and current comparable to the operating one. The setup includes a high voltage source (dielectric tester), a current flow circuit, a high voltage current transformer and a sample of XLPE insulated cable. The operation of the electrical circuit of the experimental setup is simulated using software. The modeling has shown that if the operational electrical strength of the current transformer insulation is present, the high-voltage potential cannot contact the current flow circuit. After this, modeling of the magnetic field inside the insulating layer is carried out. Based on the developed design, an experimental setup is created. To record partial discharges, an artificial defect is created in a cable sample. The results of magnetic field modeling made it possible to estimate the magnetic induction in the field of an artificial cable defect. Next, experimental studies are carried out to assess the influence of the magnetic field of the cable core current on the characteristics of partial discharges. The measurement results have showed a decrease in the average apparent charge of partial discharges and partial discharge power with increasing current. In addition, waveforms are compared, but no significant differences are found. The magnetic field of the current may influence the PD performance in the long term due to its possible influence on the direction of growth of the electrical tree structure.

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The authors declare that there are no conflicts of interest present.