EFFICIENCY OF THE ELECTRIC ENERGY STORAGE SYSTEMS IN RURAL ELECTRIC GRIDS 0.4 KV

Abstract

Currently, electricity storage systems designed to improve the quality of electrical energy in rural power grids of 0.4 kilovolts have been introduced into the distribution electrical networks of 0.4 kilovolt electric grid companies of Public Joint Stock Companies Rosseti Center and Rosseti Center and Volga Region. Evaluation of the effectiveness of their work is of practical importance. (Research purpose) The research purpose is calculation of the efficiency of using an electric energy storage system installed in a rural 0.4 kilovolt electric grid. (Materials and methods) Used data on the number of consumer complaints in 0.4 kilovolt electrical networks with electricity storage devices. To substantiate the ecological efficiency, we applied information on the daily discharge cycles of electricity storage systems, the amount of electricity issued by them during the period of operation, presented in the operational information complex Systel of the branch of PJSC Rosseti Center «Orelenergo», as well as the daily schedule for the output of the Oryol thermal power plant, provided by specialists of the branch of PJSC Quadra-Oryol Generation. (Results and discussion) It was revealed that the use of electricity storage systems for the entire period of their operation allowed to reduce carbon dioxide emissions by 3130 and 4385 tons, depending on the primary fuel used at the Orel thermal power plant. It was determined by the example of the operation of an electric power storage system in the Oryol district of electric networks that it allows to reduce the costs of an electric grid company from a discrepancy in the quality of electricity by 8,500,076 rubles per year. (Conclusions) It has been shown that the social effect of electricity storage devices is to reduce consumer complaints about the quality of electricity, and the technical effect is to ensure that electricity quality indicators meet the requirements of regulatory documents.