On the issue of reliability of power transmission (on the example of the branch of PJSC Rosseti Volga – Penzaenergo)

The article is a continuation of a series of publications focusing on the analytical assessment of specifics of power transmission in various structural divisions of PJSC Rosseti and is dedicated to the consideration of specific features of electric energy transport in the PJSC Rosseti Volga – Penzaenergo branch electric networks over the period of 2018 – 2023. The characteristic of the structural and balance state of the company's electrical networks for the period under study is presented. Based on the data published in the open press, the analysis of the number of emergency shutdowns and their consequences in electric networks of all levels of rated voltage was carried out. In accordance with the accepted classification, the intensity of these outages was analyzed depending on the amount of electrical energy undersupplied to consumers. The percentage ratio of the value of electrical energy not delivered as a result of emergency shutdowns is analyzed according to the accepted criteria of the intensity level of these failures. It was found that the smallest number of failures of extreme intensity accounts for more than 25% of undelivered electrical energy. The percentage ratio of the amount of electricity not delivered as a result of emergency outages is compared with losses of electricity as a result of unauthorized connections. Specific groups of causes of emergency shutdowns have been identified and the percentage ratio of the number of failures due to these causes to the total number of failures during the period under study has been determined. General scientific methods and methods of numerical analysis were used in the study. The technologies of Excel, Paint 3D software shells, MATLAB graphics editor, as well as author's software solutions were used as a tool base. The results obtained may be of interest to the management of the power grid structures of the Russian Federation, as well as to engineers and researchers engaged in research in the field of improving the reliability of power supply to consumers.

1. Power engineering of the Penza region. [electronic resource]. Access mode: https://ru.wikipedia.org/wiki/EnergyindustryPenzaregion (date of application: 18.05.2024).

2. Substantiating materials. The scheme and program for the development of electric power systems in Russia for 2024 – 2029. The power system of the Penza region. Access mode: https://www.soups.ru/fileadmin/files/company/future_plan/public_discussion/2024/final/38_Penzenskaja_oblast.pdf (date of application: 18.05.2024).

3. The branch of PJSC ROSSETI Volga is Penzaenergo. [electronic resource]. Access mode: rossetivolga.ru/ru/o_kompanii/filiali/filial_oao__mrsk_volgi_____penzaenergo_/ (date of reference: 05/21/2024).

4. Scheme and program of long-term development of the electric power industry of the Penza region [Electronic resource]. Access mode: https://pandia.ru/text/77/499/5412-2.php (date of reference: 05/21/2024).

5. The problem of aging of the Russian electric grid complex. [electronic resource]. Access mode: https://energo-news.ru/archives/161370 (date of application: 21.05.2024).

6. Energy strategy of the Russian Federation for the period up to 2035. [electronic resource]. Access mode: http://static.government.ru/media/files/w4sigFOiDjGVDYT4IgsApssm6mZRb7wx.pdf (date of appeal: 21.05.2024).

7. Decree of the Government of the Russian Federation dated January 21, 2004 No. 24 "On approval of information Disclosure standards by subjects of wholesale and retail electric energy markets" (with amendments and additions dated April 12, 2024). [Electronic resource]. Access mode: https://base.garant.ru/186671 / (date of access: 04.06.2024).

8. Information on the main consumer characteristics of regulated goods (works, services). About the technical condition of the networks. [electronic resource]. Access mode: https://www.rossetivolga.ru/ru/klientam/standart_raskritiya_informatsii_subektami_optovogo_i_roznichnogo_rinkov_elektricheskoy_energii/2018...2023 god/p11binform/ (accessed 04.06.2024).

9. Annual reports on the results of the 2018 – 2022 financial years of the Public Joint Stock Company Interregional Distribution Grid Company of Volga. [electronic resource]. Access mode: https://chart.rsf.ru/put.phtml/VGID_2018-2022_RUS.pdf (date of application: 22.05.2024).

10. Naumov I. V. Problems of power transmission accidents on the example of the company Omskenergosbyt OJSC. Energy Reliability and Safety 2023; 16 (3): 133 – 142.

11. Order of the Ministry of Energy of the Russian Federation dated 02/06/2017 No. 74 On Amendments to Certain Regulatory Legal Acts of the Ministry of Energy of the Russian Federation on the Investigation of the Causes of Accidents in the Electric Power Industry (Registered with the Ministry of Justice of the Russian Federation on 03/17/2017 No. 46004). [electronic resource]. Access mode: https://sudact.ru/law/prikaz-minenergo-rossii-ot-06022017-n-74/izmeneniia-kotorye-vnosiatsia-v-nekotorye/prilozhenie-n-2-prilozhenie-n/tablitsa-3 / (date of access: 12.03.2024).

12. EnergyLand.info. News. [electronic resource]. Access mode: https://energyland.info/news-show-tek-electro-252351 (date of application: 02.06.2024).