Electromechanical Assessment of Power Transformers Based on Novel Offline Testing Techniques

Ensuring the reliable operation of power transformers remains a key objective for transmission and distribution system operators aiming to minimize unplanned outages, safety risks, and lifecycle costs. As transformer fleets continue to age and maintenance resources become increasingly constrained, asset management strategies are progressively shifting toward failure prevention, driven by early defect detection and informed assessment of electromechanical condition. Within this context, offline testing and diagnostics play a central role across all lifecycle stages, including factory acceptance, site acceptance, commissioning, routine maintenance, and post-event investigations.