Analysis of functioning of electric networks of the Irkutsk Electric Grid Company

Abstract

The article presents the analysis of the Irkutsk Electric Grid Company activities over the years 2014–2021. The detailed characteristics of the company's balance activities in electric power transmission and its losses are presented, and the failure rate of the company's 0.38 to 500 kV electric networks is considered in detail. The number of failures of electric network elements for each year of the period under consideration, as well as the duration of power supply interruptions are determined. The ratio of self-recovering failures that are self-eliminated after actuation of automatic reclosing (AR) in the total volume of emergency situations has been found. The most characteristic periods of occurrence of the largest number of failures in the electric networks under consideration have been determined. The causes of failures have been considered in detail, and their analysis resulted in establishing that the key causes are the aging and wear and tear of electric network elements. The data are given on the percentage ratio of electric networks of several rated voltage classes, the service life of which exceeded the established normal values. The analysis is performed of the company’s financial expenses on development of electric networks and conformity of the planned measures to the fulfilled investments. It is established that the level of the company’s actual investments significantly exceeds the targets.The company's policy in reducing electric energy losses through the implementation of organizational and technical measures is analyzed.