Review of Cable Fault Locating Methods and Usage of VLF for Real Cases of High Resistance Fault Location First

Abstract

We are in the cable age, and cable circuits are the primary carriers for electrical transmission and distribution networks. Cable and its associated accessories faults are always predictable and quite common. Failure of cable circuits can occur at the commissioning stage or while they are in service. Utilities and service providers consider such failures unacceptable as they impact their reliability and business continuity, necessitating the implementation of specific measures to mitigate them. This paper examines the history of cable fault-finding methods and the most effective techniques for locating high-voltage cable and accessory faults. It identifies the most effective methods based on their ease of use, speed, accuracy, and minimal impact on the cable circuit\u27s life cycle. It also talks about how useful it was to use the very low-frequency (VLF) method to convert high-resistance faults into low-resistance. It also talks about the real failure scenarios for high-resistance faults in high-voltage cable circuits at the commissioning stage