Implementation of Maintenance Program to the Generators of the Mindanao Grid Using Reliability Centered Maintenance (RCM)

The implementation of the Reliability-Centered Maintenance (RCM) to the generators of the Mindanao Grid can minimize the cost of maintenance by eliminating unnecessary preventive maintenances, thus can reduce the incidents of blackouts in Mindanao. Based on this ranking list of generator importance created, alternative maintenance schedules were created which considers the reliability of the system. The best alternative maintenance schedule to implement in the Mindanao Grid is determined using the criteria such as EENS and unreliability cost for lowest system risk; maintenance cost for lowest cost. The developed software was applied to six (6) maintenance schedule alternatives; four RCM-based, one Capacity-based and one Reserve-Levelizing approach. Among all alternative schedules, it was determined that the best maintenance schedule was the RCM-based alternative 2. This Alternative 2 schedule is according to the ranking list of generator importance where important generators were scheduled for maintenance annually or once every year in the lowest load levels, while less important generators are maintained tri-annually or once every three years. Maintenance schedule 2 successfully implemented the risk index EENS to reduce the overall total cost while enhancing the reliability of the overall system.