Identification of Composite Insulator Failures in Service: A Utility Experience

Ashraf Abdulsalam Albawaleez, Renato Orlina Padilla, Shaikha Abdalla Almarzooqi, Felix Arellano, Abdelazim Youssif Salama, Elsaid Ahmed Mohamed, Abdulla Khalid Alhaj Nasser, Afra Omar Alsalami

Abstract: High-voltage insulators are critical to the reliability of power transmission systems. This study explores the degradation issues of composite insulators and presents the implementation of Reliability-Centered Maintenance (RCM) at DEWA. Using advanced inspection tools such as UV and IR cameras, hydrophobicity tests, and laboratory analyses, the research identifies defects and outlines preventive strategies. The findings underscore the value of adopting RCM for early detection, enhancing reliability, and optimizing the economic lifespan of insulators.

Keywords: Composite Insulators, Reliability-Centred Maintenance, UV Inspection, IR Thermal Inspection, Hydrophobicity