Power Equipment Maintenance

A secondary power system is more than just the devices themselves—it encompasses AC/DC circuits, control loops, and other auxiliary components. Due to the lack of real-time monitoring means for certain circuits, it is impossible to perform technical analysis and real-time assessment of equipment status. Therefore, strictly speaking, most protection systems do not currently meet the conditions for condition-based maintenance (CBM).

In power systems, the widely adopted scheduled maintenance approach has significant drawbacks, including frequent emergency repairs, inadequate or excessive maintenance, and blind maintenance practices, resulting in enormous annual expenditures worldwide. How to reasonably arrange equipment maintenance, reduce maintenance costs, and ensure high system reliability is a critical challenge for system operators.

With the growing application of sensing technology, microelectronics, computer hardware and software, digital signal processing, artificial neural networks, expert systems, fuzzy set theory, and other integrated intelligent systems in condition monitoring and fault diagnosis, research on condition-based maintenance based on equipment status monitoring and diagnostic techniques has advanced significantly, becoming a key research area in the power system sector.