Analysis of Emergency Situations and their Causes in the Electrical Networks of the branch of PJSC ROSSETI Volga – Chuvashenergo

   A study of the transmission of electric energy through distribution electric networks of various classes of rated voltage, which are on the balance sheet of the branch of PJSC ROSSETI Volga – Chuvashenergo, has been carried out. A brief structural description of the company, its composition, as well as the characteristic features of electricity consumption are given. Based on the source information available in the public domain, an analytical assessment of emergencies arising in the company's electrical networks, as well as the consequences of these failures for the period 2018 – 2024, was carried
out. A quantitative description of emergency shutdowns is given and, in accordance with the proposed classification, the intensity of emergency shutdowns is considered. An analysis of the main causes of failures has been performed, as a result of which it has been established that more than 90 % of all outages occur due to non-compliance with maintenance regulations, which leads to mechanical damage to equipment, as well as the effects of repeated natural phenomena. Visualization of the obtained research results is presented in the form of diagrams using the MATLAB graphics editor. Based on the findings, recommendations have been formulated for the company's management to improve the reliability of power transmission. The obtained research results may be of interest to the management of Chuvashenergo, other electric grid companies, as well as engineering and scientific workers investigating the reliability of power transmission.

1. Energy of Chuvashia. URL: https://ru.wikipedia.org/wiki.D1%85. (date of application: 13. 02. 2025).

2. Branch of PJSC ROSSETI Volga – Chuvashenergo. URL: https://www.rossetivolga.ru/ru/o_kompanii/filiali/filial_oao__mrsk_volgi_____chuvashenergo_/ (date of access: 02/13/2025).

3. Supporting materials. The scheme and program for the development of Russia's electric power systems for 2025 – 2030. The energy system of the Chuvash Republic. URL: https://www.soups.ru/fileadmin/files/company/future_plan/public_discussion/2025-30_final/83_CHuvashskaja_Respublika.pdf (date of request: 13. 02. 2025).

4. The Chuvashenergo branch turned 67. URL: https://minprom.cap.ru/news/2024/09/26/filialu-chuvashenergoispolnilosj-67-let (date of reference: 02/13/2025).

5. Analysis of accidents in the electric grid complex / S. G. Zakharenko, T. F. Malakhova, S. A. Zakharov, V. A. Brodt, R. S. Vershinin / Bulletin of the Kuzbass State Technical University 2016; (4): 95 – 98.

6. Gerasimov N. I. Analysis of the technical condition and damage of 6 – 10 kV overhead lines of the agro-industrial complex / International scientific journal "Innovative Science" 2017; 1 (02): 32 – 34.

7. The influence of changing wind loads on the reliability of overhead power transmission lines in various regions of Russia / V. V. Klimenko, O. E. Kondratieva, O. A. Loktionov, E. V. Fedotova / Reports of the Russian Academy of Sciences. Physics, technical sciences 2022; (504) 1: 58 – 65.

8. Analysis of accidents and injuries in the electric power industry of the Russian Federation / A. B. Tryapitsin, I. M. Kirpichnikova, V. F. Bukhtoyarov, G. A. Kruglov / Bulletin of SUSU. The series "Energy" 2018; (18) 4: 30 – 40.

9. About the accident rate of overhead lines of the main network / I. M. Galiaskarov, M. S. Misrikhanov, V. N. Ryabchenko, A. V. Shuntov / Electric power. Transmission and distribution 2020; 1(58): 56 – 59.

10. Rosseti Volga. P.19 About the main consumer characteristics of regulated goods, works, and services. 2018 – 2024. URL: https://www.rossetivolga.ru/ru/klientam/standart_raskritiya_informatsii_subektami_optovogo_i_roznichnogo_rinkov_elektricheskoy_energii/2024god/p19gobosno/ (date of access: 02/13/2025).

11. Naumov I. V. Causes of accidents in electric distribution networks (using the example of the branch of PJSC ROSSETI Volga – Saratov Distribution Networks). Reliability and safety of energy 2024; (17) 2: 88 – 97.

12. Naumov I.V. Features of power transmission in electric distribution networks (on the example of the branch of PJSC ROSSETI Volga – Ulyanovsk Distribution Networks). Grozny Natural Science Bulletin 2024; 9 (1) (35): 118 – 126. DOI: 10.25744/genb.2024.55.33.017.

13. Naumov I. V. Perspective assessment of the reliability of electrical networks using the example of the branch of PJSC ROSSETI Volga – Saratov Distribution Networks. Journal of the Siberian Federal University. Machinery and technology 2024; 17 (3): 360 – 377.

14. Naumov I. V. On the issue of reliability of power transmission (on the example of the branch of PJSC ROSSETI Volga – Penzaenergo). Reliability and safety of energy 2024; 17 (3): 164 – 171.

15. Order of the Ministry of Energy of Russia dated 03/02/2010 N 90 (as amended on 07/27/2017): "On approval of the form of the act on the investigation of the causes of accidents in the electric power industry and the procedure for filling it out" (together with the "Procedure for filling out the form of the act on the investigation of the causes of accidents in the electric Power industry") (Registered with the Ministry of Justice of Russia on 04/22/2010 N 16973. [Electronic resource]. – Access mode: https://docs.cntd.ru/document/902204848 (date of request: 26. 02. 2025).