CHANGING THE TERMS OF MAINTENANCE OF LOW-OIL CIRCUIT BREAKERS OF THE CONTACT NETWORK FEEDERS
Keywords:
traction substation, oil switches, contact network feeders, frequency of service periodsAbstract
Annotation. Currently, due to the increase in freight traffic and a significant increase in the mass of trains, when double freight trains weighing 12,000 tons are included in the schedule, the current loads on the switches of the feeders of the contact network significantly increase. This leads to premature wear of the switch assemblies, creates conditions for frequent short circuits on the feeders of the contact network, which in turn reduces their switching and mechanical life. Such conditions lead to an increase in the number of failures of the feeders of the contact network. The article considers the requirements of the current regulatory documents for the maintenance of oil circuit breakers of contact network feeders at traction substations of electrified railways. A statistical analysis of the failures of the studied switches over the past 20 years has been performed on the example of traction substations of the East Siberian Railway. The results of the analysis show that the failure of these types of feeder switches of the contact network is most likely after an average of 6 years.
The frequency of performing inter-repair tests, during which it is possible to establish the presence of a developing defect of any oil switch assembly, is, according to the regulatory documentation, once every 12 years. Analysis of failure statistics indicates the need to adjust the duration of the overhaul tests to once every 6 years. This will prevent serious defects in the nodes of the oil switches of the contact network feeders, which can cause their failures. Consequently, the reliability of traction substations will increase, which will lead to an increase in the safety of the transportation process.
References
Пузина Е.Ю., Туйгунова А.Г., Худоногов И.А. Системы мониторинга силовых транс-форматоров тяговых подстанций. Иркутск, 2020. – 184 с.
Пузина Е.Ю. Оценка остаточного ресурса тяговых трансформаторов Северного хода ВСЖД. Транспорт-2013: труды международной научно-практической конференции.–Ростов-на-Дону: Изд-во РГУПС, 2013. С. 173-175.
Пузина Е.Ю. Целесообразность применения системы мониторинга силовых трансформа-торов. Повышение эффективности производства и использования энергии в условиях Си-бири. Материалы Всероссийской научно-практической конференции с международным уча-стием. 2013. С.167-171.
Keyvan Firuzi, Mehdi Vakilian, B. Toan Phung, Trevor R. Blackburn, "Partial Discharges Pattern Recognition of Transformer Defect Model by LBP & HOG Features," Power Delivery IEEE Trans-actions on, vol. 34, no. 2, pp. 542550, 2019.
Воронин В.В. Диагностические принципы в системах технического обслуживания.
Информатика и системы управления. 2021. № 4 (70). С. 67-80.
Макашева С.И., Пинчуков П.С. Мониторинг состояния масляной изоляции тяговых трансформаторов на основе анализа растворенных газов. Транспорт Азиатско-Тихоокеанского региона. 2021. № 2 (27). С. 57-62.
Попов А.Ю., Пузина Е.Ю., Кашин А.А. Сравнительный анализ выключателей для сетей класса 6-35 кВ. Технико-экономические проблемы развития регионов. Материалы научно-практической конференции с международным участием. 2019. С. 162-171.
Y. Dang and W. Chen, "Design of Oil-Immersed Apparatus Oil Velocity Measure System Based on the Ultrasonic Wave Doppler Effect,” 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), Palermo, pp. 14, 2018.
Шевердин И.Н., Шаманов В.И., Трофимов Ю.А. Влияние тяжеловесных поездов на рель-совые цепи и АЛС. Автоматика, связь, информатика. 2004. № 8. С. 24.
Cherepanov A, Kutsiy A. Modeling of tractive power supply systems for heavy-tonnage trains operation. 2018 International Russian Automation Conference, RusAutoCon 2018. 2018. C. 8501734.
Khudonogov I.A., Puzina E.Yu., Tuigunova A.G. Evaluation of short circuit currents effects on power transformers residual service life. 2019 International Conference on Industrial Engineering, Applications and Manufacturing, ICIEAM 2019. 2019. C. 8743069.
Khudonogov I.A., Puzina E.Yu., Tuigunova A.G. Summarized Diagnostic Parameter for Con-dition Assessment of Power Transformer Windings Insulation. Proceedings – 2019 International Russion Automation Conference, RusAutoCon 2019. 2019. C. 8867610.
Правила содержания тяговых подстанций, трансформаторных подстанций и линейных устройств системы тягового электроснабжения. М.: ООО «Центр Инноваций и Развития «ТЕХИНФОРМ»», 2019. – 319 С.
В.В. Ершевич, А.Н. Зейлигер, Г.А. Илларионов и др.; Под ред. С.С. Рокотяна и И.М. Шапиро. Справочник по проектированию электроэнергетических систем. – 3-е изд., пере-раб. и доп. – М.: Энергоатомиздат, 1985. – 352 с.
Надежность систем энергетики и их оборудования. Справочник: В 4-х т./ Под общей ред. Ю.Н. Руденко. Т.2. Надежность электроэнергетических систем. Спрвочник/ Под ред. М.Н. Розанова. – М.: Энергоатомиздат, 2000. – 568 с.
