ASSESSMENT OF THE THEORETICAL FOUNDATIONS OF CORONA DISCHARGE MONITORING IN HIGH-VOLTAGE OVERHEAD TRANSMISSION LINES OF MINING ENTERPRISES

Abstract

This scientific work In this study, it is emphasized that the transfer of any material object from one location to another inevitably requires the expenditure of a certain amount of energy. Electrical energy transmitted through power networks, by its physical nature, represents a specific type of product that is consumed exclusively at the moment of its generation and transmission, while its transportation does not require additional material carriers. Actual electrical energy losses are defined as the difference between the amount of energy supplied to the electrical network and the amount of energy that is effectively and usefully delivered to end consumers. Electrical energy losses constitute an inherent component of the processes of power transmission and distribution and are formed under the influence of a combination of physical, technical, and organizational factors. In the structure of electrical energy losses, it is customary to distinguish several main groups, among which technical losses play a dominant role. This type of loss occurs in the principal elements of electrical networks and is caused by the flow of electric current, which leads to the heating of current-carrying components, as well as by specific electrophysical processes taking place in high-voltage installations. Technical losses include losses due to corona discharge on overhead transmission lines, energy leakage through insulation elements, as well as power losses in transformers, autotransformers, static and synchronous compensators, shunt reactors, and de-icing devices. A significant share of the overall balance of technical losses is also accounted for by electrical energy consumed for the auxiliary needs of substation equipment that ensures the operation of power transmission and distribution processes. Thus, a detailed analysis of electrical energy losses in transmission and distribution systems, their identification, calculation, and classification, as well as the targeted reduction of corona and load-related losses, make it possible to significantly improve the technical and economic efficiency of electrical networks. A comprehensive approach to managing electrical energy losses is regarded as a key prerequisite for enhancing the energy efficiency and reliability of modern power supply systems.