Effect of Insulation Bulging on the Electric Field Distribution in AC Cables

This paper presents the effect of bulging on the electric field distribution of an AC cable. Bulging is a type of deformation or defect, where the cable undergoes swelling or expansion in a certain area, resulting in a non-uniform geometry. This may occur due to various reasons such as mechanical stress, thermal stress, overloading, excessive bending, and sometimes environmental factors. The effect of the extent of bulging has been investigated in a finite element method (FEM) based model with electro-thermally coupled simulations. The results are expected to provide useful insights into the design and operational aspects of the cables.