Work

On the Accuracy of the Surface Voltage Gradient Calculation on Round Conductors Using Standard Formulas

Year: 2025

Type: article

Abstract: The surface voltage gradient (SVG) is probably the most important factor in determining the likelihood of a corona discharge occurring on the surface of round conductors or tubular substation busbars. There are several standards that propose simple formulas to determine the SVG of various configurations involving round conductors. However, such formulas are not exact, so this paper analyzes their accuracy by comparing the results provided by such formulas with the results obtained by Finite Element Method (FEM) models. This comparison highlights the difficulty in accurately calculating the average and maximum SVG of round conductors and tubular busbars using simple formulas.

Source: Electric Power Systems Research

DOI: 10.1016/j.epsr.2025.111794

Author: Jordi-Roger Riba

Institution: Universitat Politècnica de Catalunya

Language: English

Topic: High-Voltage Power Transmission Systems

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,810

Funders: Agència de Gestió d'Ajuts Universitaris i de Recerca, Agencia Estatal de Investigación