Assessment of Corona Losses Impact in High Voltage Overhead Transmission Lines

Abstract

Relevance: in recent years, the total power losses in high-voltage overhead transmission lines have significantly increased, leading to various disturbances in the operating modes of electrical networks. Furthermore, since the share of corona-related losses in the overall power dissipation is relatively high, the development of optimal operating regimes and reduction methods has become a matter of great importance. The corona phenomenon decreases the reliability of the insulation system, causes degradation of insulation materials, and may lead to dielectric breakdown, resulting in the complete failure of the system. The significance of this research lies in the fact that the parameters characteristic of the corona discharge process in high-voltage transmission lines have a negative impact on electrical power losses. This necessitates a comprehensive analysis of these parameters and the development of effective measures aimed at minimizing their influence.

Aim: system analysis and optimization of total power losses caused by corona discharge in high-voltage overhead transmission lines.

Methods: methods of comparative analysis of software, mathematical modeling, and algorithmization are used.

Results: the generation of the visible onset voltage of corona discharge represents the voltage level at which visually observable signs of corona appear on transmission lines. This parameter provides important information about the insulation quality of the system and the uniformity of the electric field. These interrelations are of significant importance when assessing the reliability of insulation and the energy efficiency of power transmission systems.