Maintenance decision intelligence (MDI) strategy for protection assets while utilizing SmartGridDITM

This paper discusses prioritizing the maintenance of protection assets (PAs) while employing maintenance and asset replacement decision intelligence (MDI) strategy. The proposed strategy uses condition and importance analysis as decision indices to determine the criticality of maintenance for PAs, the use of the decision indices, and how values are assigned. In addition, this paper also discusses various maintenance strategies that can be determined based on plot points on the decision index. For this analysis, the urgency to maintain or replace PAs is determined by how the decision indices are plotted within environmental condition parameters. PA maintenance prioritization will be advantageous for utilities that have a plethora of PAs to monitor while optimizing operation effectiveness and improving smart grid reliability. The MDI strategy can improve how time is allocated when supporting critical PAs/IEDs and reduce service costs. Further MDI Strategy supports optimal replacement strategy of protection assets. MDI Method is applicable on all asset groups. The difference is only in different evaluation criteria and different decision rules. This solution offers advantages in system reliability while providing economic benefits for today´s power systems.