Reliability-Centred Maintenance in POWERGRID: A Strategic Approach for Enhancing Transmission Line Performance and Grid Reliability

Transmission lines constitute a critical component of power system networks, enabling bulk transfer of electricity from generation sources to load centres while ensuring system stability, security, and reliability. Transmission lines traverse diverse and often challenging terrains, including hilly regions, river crossings, forests, coastal belts, and densely populated areas. Over their operational life, these assets are subjected to a wide range of environmental and external stresses such as cyclones, thunderstorms, heavy rainfall, etc. Failures of high-voltage transmission lines or associated components leads to severe impact on the power system, potentially leading to large-scale disturbances and degradation of overall grid reliability.