On the issue of the rate of accidents in Russia's electric networks (by the example of "Rosseti Lenenergo" PJSC)

Abstract

The article discusses in detail the issues related to the electric energy transmission through the electric PJSC Rosseti Lenenergo networks over the 2014 - 2021 operation period. The purpose of the article is defined as a study of the accident rate in the Company's electrical networks, for which a number of tasks to be considered are formulated. The results of annual reports on the number of failures in the Leningrad region and St. Petersburg electrical networks in 2014 - 2021, broken down by months, are used as source data. To approximate the series of emergency shutdowns, programming algorithms developed by the authors were used, which, through the technologies of the Matlab graphics editor, present the visualization of the studied characteristics. The structure of the electric networks on the Company's books, both in the Leningrad region and in St. Petersburg, is considered. The balance of electric energy for the period under study and the data on its losses during power transmission are analyzed. The assessment of the level of damage to electrical networks by events of stable and unstable failures was made. The principal causes of failures are classified, and their percentages related to the total number of failures across the Company's structural units is established. The relationship is established for the number of failures in particular months of the time period under study. The Company's plans of repair and restoration activities are considered, and the correlation coefficient concept is introduced, which establishes the relationship between the number of emergency shutdowns and the set of measures aimed at ensuring the reliability level for the uninterrupted functioning of electric power transmission facilities.