Optimizing the Design of a 35 kV Switchgear Cubicle with Solid Shielded Insulation
DOI:
https://doi.org/10.24160/0013-5380-2025-12-50-57Keywords:
electric field, magnetic field, insulation structures, switchgear and control gearAbstract
The article addresses matters concerned with optimizing the insulation structures of a switchgear and control gear with solid shielded insulation of the 35 kV voltage class based on numerical simulation. The existing designs of 35 kV switchgear and control gear cubicles produced by Russian and foreign manufacturers are compared with each other. The main advantages and drawbacks of various cubicle designs are identified. Simplified 3D models of the cubicle main power modules have been developed: a cable coupling, a vacuum circuit breaker, and a bus module, as well as an integral cubicle model. Electric field strength distribution patterns in the insulation volume and of the magnetic field intensity inside the cubicle volume are obtained. The dependences of the maximum electric field strength on the insulation thickness, as well as the magnetic field intensity distribution along the secant line under the busbars, depending on the thickness of their live parts, are presented. The influence of insulation thickness and busbar diameter on the levels of electric and magnetic field intensities is estimated, and their concentration zones are determined. Methods for optimizing the insulating structure thicknesses and optimal insulation thicknesses are proposed for carrying out further research of electrophysical processes and related areas affecting the operation of a switchgear and control gear with solid shielded insulation.
References
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2. Varivodov V.N. et al. The Current State and Possibilities for Development of Switchgears for a Voltage of 6–35 kV. – Power Technology and Engineering, 2017, vol. 88, No. 5, pp. 503–508, DOI: 10.3103/S1068371217080120.
3. Seeger M. et al. Trends in High Voltage Switchgear Research and Technology. – IEEJ Transactions on Electrical and Electronic Engineering, 2025, vol. 20, pp. 322–338, DOI: 10.1002/tee.24244.
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7. Trident Solid Dielectric Switchgear [Электрон. ресурс], URL: https://www.gwelectric.com/products/switchgear/trident-solid-dielectric-switchgear/ (дата обращения 15.10.2025).
8. IEC 62271-201:2014. High-Voltage Switchgear and Control-gear – Part 201: AC Solid-Insulation Enclosed Switchgear and Controlgear for Rated Voltages Above 1 kV and Up to and Including 52 kV. 2014, 199 p.
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10. Вариводов В.Н., Ковалев Д.И., Голубев Д.В. Полимеры в технике высоких напряжений. М.: Изд-во МЭИ, 2022, 280 с.
11. Shielded Solid Insulated System (2SIS) – The Next Generation of Medium Voltage Switchgear [Электрон. ресурс], URL: https://blog.se.com/infrastructure-and-grid/power-management-metering-monitoring-power-quality/2018/03/15/shielded-solid-insulated-system-2sis-the-next-generation-of-medium-voltage-switchgear/ (дата обращения 15.10.2025).
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13. Medium Voltage Switchgear Gets a “Solid” Upgrade [Электрон. ресурс], URL: https://www.newequipment.com/plant-operations/article/22059930/medium-voltage-switchgear-gets-a-solid-upgrade (дата обращения 15.10.2025).
14. Поляков Р.А. и др. Расчет электрических полей в моноблоке высоковольтной ячейки RM-6. – Электричество, 2024, № 12, с. 67–73.
15. Борисов Р.К., Ковалев Д.И. Исследование электрических полей сложных конфигураций в комплектных распределительных устройствах классом напряжения 10 кВ. – XXIII Всерос. конф. «Электромагнитное поле и материалы (фундаментальные физические исследования)», 2015, с. 345–352.
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Работа выполнена в рамках проекта «Оптимизация конструкций высоковольтных ячеек 10-35 кВ» при поддержке гранта НИУ «МЭИ» программы научных исследований «Приоритет 2030: Технологии будущего» в 2024–2026 гг.
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1. Kovalev D.I. Issledovanie raspredeleniya elektricheskih i magnitnyh poley promyshlennoy chastoty v raspredelitel’nyh ustroystvah napryazheniem 6–110 kV: dis. … kand. tekhn. nauk (Investigation of the Distribution of Electric and Magnetic Fields of Industrial Frequency in Switchgear Voltage 6–110 kV: Dis. … Cand. Sci. (Eng.)). M., 2019, 153 p.
2. Varivodov V.N. et al. The Current State and Possibilities for Development of Switchgears for a Voltage of 6–35 kV. – Power Technology and Engineering, 2017, vol. 88, No. 5, pp. 503–508, DOI: 10.3103/S1068371217080120.
3. Seeger M. et al. Trends in High Voltage Switchgear Research and Technology. – IEEJ Transactions on Electrical and Electronic Engineering, 2025, vol. 20, pp. 322–338, DOI: 10.1002/tee.24244.
4. Frotscher A., Kern M., Puffer A. SF6 Alternative Development for High Voltage Switchgear. – CIGRE Session, 2014, Report D1-305.
5. SVEL KRU-SVEL (SVEL KRU-SVEL) [Electron. resource], URL: https://svel.ru/catalog/komplektnye-raspredelitelnye-ustroystva/ (Accessed on 15.10.2025).
6. Solid Insulated Switchgear [Electron. resource], URL: http://sojoelectric.com/1-2-solid-insulated-switchgear/238509/ (Accessed on 15.10.2025).
7. Trident Solid Dielectric Switchgear [Electron. resource], URL: https://www.gwelectric.com/products/switchgear/trident-solid-dielectric-switchgear/ (Accessed on 15.10.2025).
8. IEC 62271-201:2014. High-Voltage Switchgear and Control-gear – Part 201: AC Solid-Insulation Enclosed Switchgear and Controlgear for Rated Voltages Above 1 kV and Up to and Including 52 kV. 2014, 199 p.
9. Long Operational Experiences of Medium-Voltage Solid-Insulated Switchgears [Electron. resource], URL: https://cse.cigre.org/cse-n035/a3-long-operational-experiences-of-medium-voltage-solid-insulated-switchgears.html (Accessed on 15.10.2025).
10. Varivodov V.N., Kovalev D.I., Golubev D.V. Polimery v tekhnike vysokih napryazheniy (Polymers in High-Voltage Technology). M.: Izd-vo MEI, 2022, 280 p.
11. Shielded Solid Insulated System (2SIS) – The Next Generation of Medium Voltage Switchgear [Electron. resource], URL: https://blog.se.com/infrastructure-and-grid/power-management-metering-monitoring-power-quality/2018/03/15/shielded-solid-insulated-system-2sis-the-next-generation-of-medium-voltage-switchgear/ (Accessed on 15.10.2025).
12. MV Solid Insulation Switchgear (SIS) [Electron. resource], URL: https://switchgearcontent.com/2019/06/21/591/mv-solid-insula-tion-switchgear-sis/ (Accessed on 15.10.2025).
13. Medium Voltage Switchgear Gets a “Solid” Upgrade [Electron. resource], URL: https://www.newequipment.com/plant-operations/article/22059930/medium-voltage-switchgear-gets-a-solid-upgrade (Accessed on 15.10.2025).
14. Polyakov R.A. et al. Elektrichestvo – in Russ. (Electricity), 2024, No. 12, pp. 67–73.
15. Borisov R.K., Kovalev D.I. XXIII Vseros. konf. «Elektromagnitnoe pole i materialy (fundamental’nye fizicheskie issledovaniya)» – in Russ. (XXIII All-Russian Conf. Electromagnetic Field and Materials (Fundamental Physical Research), 2015, pp. 345–352
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The study was carried out within the framework of the project "Optimization of 10–35 kV switchgear cubicle designs" with the support of a grant from the National Research University Moscow Power Engineering Institute for implementing the research program "Priority 2030: Technologies of the Future" in 2024–2026.
2. Varivodov V.N. et al. The Current State and Possibilities for Development of Switchgears for a Voltage of 6–35 kV. – Power Technology and Engineering, 2017, vol. 88, No. 5, pp. 503–508, DOI: 10.3103/S1068371217080120.
3. Seeger M. et al. Trends in High Voltage Switchgear Research and Technology. – IEEJ Transactions on Electrical and Electronic Engineering, 2025, vol. 20, pp. 322–338, DOI: 10.1002/tee.24244.
4. Frotscher A., Kern M., Puffer A. SF6 Alternative Development for High Voltage Switchgear. – CIGRE Session, 2014, Report D1-305.
5. SVEL КРУ-СВЭЛ [Электрон. ресурс], URL: https://svel.ru/catalog/komplektnye-raspredelitelnye-ustroystva/ (дата обращения 15.10.2025).
6. Solid Insulated Switchgear [Электрон. ресурс], URL: http://sojoelectric.com/1-2-solid-insulated-switchgear/238509/ (дата обращения 15.10.2025).
7. Trident Solid Dielectric Switchgear [Электрон. ресурс], URL: https://www.gwelectric.com/products/switchgear/trident-solid-dielectric-switchgear/ (дата обращения 15.10.2025).
8. IEC 62271-201:2014. High-Voltage Switchgear and Control-gear – Part 201: AC Solid-Insulation Enclosed Switchgear and Controlgear for Rated Voltages Above 1 kV and Up to and Including 52 kV. 2014, 199 p.
9. Long Operational Experiences of Medium-Voltage Solid-Insulated Switchgears [Электрон. ресурс], URL: https://cse.cigre.org/cse-n035/a3-long-operational-experiences-of-medium-voltage-solid-insulated-switchgears.html (дата обращения 15.10.2025).
10. Вариводов В.Н., Ковалев Д.И., Голубев Д.В. Полимеры в технике высоких напряжений. М.: Изд-во МЭИ, 2022, 280 с.
11. Shielded Solid Insulated System (2SIS) – The Next Generation of Medium Voltage Switchgear [Электрон. ресурс], URL: https://blog.se.com/infrastructure-and-grid/power-management-metering-monitoring-power-quality/2018/03/15/shielded-solid-insulated-system-2sis-the-next-generation-of-medium-voltage-switchgear/ (дата обращения 15.10.2025).
12. MV Solid Insulation Switchgear (SIS) [Электрон. ресурс], URL: https://switchgearcontent.com/2019/06/21/591/mv-solid-insula-tion-switchgear-sis/ (дата обращения 15.10.2025).
13. Medium Voltage Switchgear Gets a “Solid” Upgrade [Электрон. ресурс], URL: https://www.newequipment.com/plant-operations/article/22059930/medium-voltage-switchgear-gets-a-solid-upgrade (дата обращения 15.10.2025).
14. Поляков Р.А. и др. Расчет электрических полей в моноблоке высоковольтной ячейки RM-6. – Электричество, 2024, № 12, с. 67–73.
15. Борисов Р.К., Ковалев Д.И. Исследование электрических полей сложных конфигураций в комплектных распределительных устройствах классом напряжения 10 кВ. – XXIII Всерос. конф. «Электромагнитное поле и материалы (фундаментальные физические исследования)», 2015, с. 345–352.
---
Работа выполнена в рамках проекта «Оптимизация конструкций высоковольтных ячеек 10-35 кВ» при поддержке гранта НИУ «МЭИ» программы научных исследований «Приоритет 2030: Технологии будущего» в 2024–2026 гг.
#
1. Kovalev D.I. Issledovanie raspredeleniya elektricheskih i magnitnyh poley promyshlennoy chastoty v raspredelitel’nyh ustroystvah napryazheniem 6–110 kV: dis. … kand. tekhn. nauk (Investigation of the Distribution of Electric and Magnetic Fields of Industrial Frequency in Switchgear Voltage 6–110 kV: Dis. … Cand. Sci. (Eng.)). M., 2019, 153 p.
2. Varivodov V.N. et al. The Current State and Possibilities for Development of Switchgears for a Voltage of 6–35 kV. – Power Technology and Engineering, 2017, vol. 88, No. 5, pp. 503–508, DOI: 10.3103/S1068371217080120.
3. Seeger M. et al. Trends in High Voltage Switchgear Research and Technology. – IEEJ Transactions on Electrical and Electronic Engineering, 2025, vol. 20, pp. 322–338, DOI: 10.1002/tee.24244.
4. Frotscher A., Kern M., Puffer A. SF6 Alternative Development for High Voltage Switchgear. – CIGRE Session, 2014, Report D1-305.
5. SVEL KRU-SVEL (SVEL KRU-SVEL) [Electron. resource], URL: https://svel.ru/catalog/komplektnye-raspredelitelnye-ustroystva/ (Accessed on 15.10.2025).
6. Solid Insulated Switchgear [Electron. resource], URL: http://sojoelectric.com/1-2-solid-insulated-switchgear/238509/ (Accessed on 15.10.2025).
7. Trident Solid Dielectric Switchgear [Electron. resource], URL: https://www.gwelectric.com/products/switchgear/trident-solid-dielectric-switchgear/ (Accessed on 15.10.2025).
8. IEC 62271-201:2014. High-Voltage Switchgear and Control-gear – Part 201: AC Solid-Insulation Enclosed Switchgear and Controlgear for Rated Voltages Above 1 kV and Up to and Including 52 kV. 2014, 199 p.
9. Long Operational Experiences of Medium-Voltage Solid-Insulated Switchgears [Electron. resource], URL: https://cse.cigre.org/cse-n035/a3-long-operational-experiences-of-medium-voltage-solid-insulated-switchgears.html (Accessed on 15.10.2025).
10. Varivodov V.N., Kovalev D.I., Golubev D.V. Polimery v tekhnike vysokih napryazheniy (Polymers in High-Voltage Technology). M.: Izd-vo MEI, 2022, 280 p.
11. Shielded Solid Insulated System (2SIS) – The Next Generation of Medium Voltage Switchgear [Electron. resource], URL: https://blog.se.com/infrastructure-and-grid/power-management-metering-monitoring-power-quality/2018/03/15/shielded-solid-insulated-system-2sis-the-next-generation-of-medium-voltage-switchgear/ (Accessed on 15.10.2025).
12. MV Solid Insulation Switchgear (SIS) [Electron. resource], URL: https://switchgearcontent.com/2019/06/21/591/mv-solid-insula-tion-switchgear-sis/ (Accessed on 15.10.2025).
13. Medium Voltage Switchgear Gets a “Solid” Upgrade [Electron. resource], URL: https://www.newequipment.com/plant-operations/article/22059930/medium-voltage-switchgear-gets-a-solid-upgrade (Accessed on 15.10.2025).
14. Polyakov R.A. et al. Elektrichestvo – in Russ. (Electricity), 2024, No. 12, pp. 67–73.
15. Borisov R.K., Kovalev D.I. XXIII Vseros. konf. «Elektromagnitnoe pole i materialy (fundamental’nye fizicheskie issledovaniya)» – in Russ. (XXIII All-Russian Conf. Electromagnetic Field and Materials (Fundamental Physical Research), 2015, pp. 345–352
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The study was carried out within the framework of the project "Optimization of 10–35 kV switchgear cubicle designs" with the support of a grant from the National Research University Moscow Power Engineering Institute for implementing the research program "Priority 2030: Technologies of the Future" in 2024–2026.
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2025-10-30
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