Authors
Gracheva E.I. – Doctor of Technical Sciences, Professor, Department of Power Supply of Industrial Enterprises, Kazan State Energy University, Kazan, Republic of Tatarstan, Russia, grachieva.i@bk.ru
Tukhfetullov I.R. – master’s student, Department of Power Supply of Industrial Enterprises, Kazan State Energy University, Kazan, Republic of Tatarstan, Russia, agal73rus@gmail.com
Ilyasova Y.K. – master’s student, Department of Power Supply of Industrial Enterprises, Kazan State Energy University, Kazan, Republic of Tatarstan, Russia, agal73rus@gmail.com
Annotation
The article discusses the issues of optimizing the operating modes of medium voltage electrical networks in conditions of increasing accident rates of electrical equipment. It is noted that in the context of the constantly increasing number of subscribers of energy companies and their declared capacities, which influences changes in the configuration of the electrical network, questions arise about optimizing the operating modes of electrical networks. Therefore, it is necessary to consider and take into account normal modes and, most importantly, take into account the impact of post-emergency modes on all adjacent subscribers of the distribution network, taking into account ensuring the reliability and quality of electricity. An analysis of accident statistics for 2015-2021 was performed. according to Rostechnadzor. There is an increase in the number of accidents in 2021 by 47% compared to 2020. The main causes of accidents are considered. To solve the problem, it is proposed to accelerate the implementation of the “Digital Transformation 2030” Concept of PJSC Rosseti, including the transition to digital substations. It is proposed to increase the reliability of power supply through additional sectioning and automatic backup using reclosers6. Issues of operational reliability of automated digital substations and distribution of responsibilities are discussed. It is concluded that it is necessary to take into account changed network configurations and visual monitoring of equipment in the context of digitalization.
Keywords
accident rate of electrical equipment, mode optimization, electrical networks, reliability of power supply to consumers, digital transformation, network partitioning.
References
- Bulatov Yu.N., Kryukov A.V., Suslov K.V. Study of operating modes of an isolated power supply system with controlled distributed generation installations, electricity storage devices and motor load. News of higher educational institutions. Energy problems. 2021. T. 23. No. 5. pp. 184-194. doi:10.30724/1998-9903-2021-23-5-184-194.
- Official website of PJSC Rosseti. Concept “Digital Transformation 2030”. [Electronic resource]. https://rosseti.ru/ (date of access: 03/5/2022).
- Official website of Rostechnadzor. [Electronic resource]. http://szap.gosnadzor.ru/activity/ (access date: 03/20/2022).
- Rules for electrical installations. 7th edition. Publishing house “Morkniga”. 2007. 584 p.
- Soloviev V.O., Vorkunov O.V. Electrical substation 35/10 kV on reclosers. Young researcher: challenges and prospects: collection. Art. based on materials from the CLI International Scientific and Practical Conference “Young Researcher: Challenges and Prospects.” Ed. “Internauka”, No. 4(151). 2020. ss. 89-92
- STO 34.01-21.1-001-2017 Electrical distribution networks with voltage 0.4 – 110 kV. Requirements for technological design. JSC “Institute Energosetproekt” with the participation of PJSC “Rosseti” and subsidiaries and affiliates. Approved and put into effect by the Order of PJSC Rosseti dated 08/02/2017. 400s.
- Vorkunov O.V., Afanasyeva T.I. Physical processes in vacuum circuit breakers when switching overvoltages occur. International technical and economic journal. 2021. No. 5, pp. 7-17.
- Zorina T.G., Prusov S.P. Improving the methodology for assessing the digital transformation of the unified energy system of the Republic of Belarus. Problems and prospects. Bulletin of the Kazan State Energy University. 2021. T. 13. No. 3(51). ss. 99-113.
Publication date
2026-03-16