Abstract:
The topic of reducing losses and using new generation conductors in electricity distribution networks is always discussed and among the research priorities. In order to plan optimally and properly in the electricity distribution industry, it is necessary to implement the plan to use the new generation of medium pressure conductors at the level of electricity distribution, taking into account the technical parameters and the necessary conditions for using this important issue in improving the utilization. In this research, we intend to first explain the skin effect of air conductors and express its equations, then we will investigate this effect and ways to eliminate it in various articles.
Machine summary:
1- Introduction Skin effect in overhead conductors refers to the concentration of current flow near the surface of the conductor as the frequency of the current increases.
2- Skin effect Skin effect [12-18] is a phenomenon that occurs in alternating current power transmission lines and leads to a decrease in the current density in the center of the wire and an increase in the outer layers or wire shell.
The study investigates the impact of skin effect on the windings by using different types of conductors, such as circular, square shaped, and foil wires, and analyzing the current density within the conductors at frequencies of 20 MHz and 20 kHz using finite element method (FEM) simulation.
As a result, at higher frequencies, the skin effect causes a decrease in leakage inductance and an increase in AC resistance in conductors like circular and square wires, as studied in this paper.
In this paper it is obvious that electromagnetic field calculation hypothesis for the transmission line with the rectangular conductor structure, and based on the hypothesis, it was examined skin effect loss concealment by stacking negative penetrability fabric.
6- Impact of skin effect on ACSR conductors [27] This study utilizes numerical models, including a single cylinder model, two coaxial cylinder models, and cylinder layer models.
This helps to distribute the current more evenly throughout the cross-section of the conductor, reducing the impact of skin effect.