active power loss

Current harmonics in industrial cable lines are accompanied by harmful phenomena that cause additional active power losses in cable cores. The phenomena are an increasing the insulation temperature and reduction cable lifetime. Failures are often noted in the cable electrical grids due to improper accounting for the impact of harmonics in the cable sizing. Therefore, the correct consideration of the active power loss in cables carrying distorted currents allows for the correct sizing its types and avoid potential problems in the power grid operation.

The study focuses on the ways to improve the operation efficiency of 6 kV and 10 kV distribution power networks on the example of the Horodok District Power Network, Lvivoblenergo PJSC (Ukraine). The main drawbacks of these power networks are the poor condition of the electrical equipment and great length and insufficient transmission capacity of the existing 6/10 kV power transmission lines.