Voltage Variations and Composite Solid Insulation Effects on Electrical Tree Propagation Based on Finite Element Method

Document Type : Original Article

Authors

1 Electrical Power and Machines, Faculty of Engineering, Zagazig University, Zagazig, Egypt

2 Electrical Engineering Department, College of Engineering, Shaqra University, Dawadmi, Ar Riyadh, Saudi Arabia

Abstract

This paper investigates the effect of the voltage variations and the change of solid
insulation material on the initiation and propagation of Electrical Tree (ET) through
solid dielectrics based on the application of Finite Element Method (FEM) approach
using the environmental domain of [COMSOL Multiphysics 𝟓. 𝟑𝒂] program as an
innovative way to be used in the complicated study of Electrical Treeing
Phenomenon (ETP). This research provides an innovative solution to suppress the
initiation point of ET and suppress its growth rates using a composite solid insulation
material of Poly – Vinyl Chloride (PVC) and Cross – Linked Polyethylene (XLPE)
regardless to the mechanical features of this composition. In this research, the study
cases are conducted for High Voltage (HV) and Extra High Voltage (EHV) power
system networks as the effect of ETP is to be observed clearly. Simulation model is
used in this research to imitate the proposed hyperbolic needle – plane system. Case
studies are compared between each others to validate the results

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