Functional Failure Criticality Assessment and Control of Power Distribution Systems: Failure Prioritization Using AHP

Power distribution systems consist of critical infrastructure with various categories of assets that require rigorous maintenance programs to ensure their reliability and performance for all stakeholders. Maintenance program prioritization is essential, considering asset significance, failure likelihood, and consequences. This research presents a pioneering methodology for functional failure criticality assessment and control in power distribution systems. It uniquely combines NORSOK Z008 guidelines for functional failure identification of all types of assets and a multiple criteria decision-making tool named analytic hierarchy process (AHP) for prioritization of resources, and yearly budgets for the identified critical assets using asset failure analysis. This innovative approach addresses the shortcomings of existing methods by comprehensively enhancing cost-effectiveness, efficiency, and stakeholder decision-making, while adhering to industrial standards. The rationale stems from the necessity to bridge the gap between the theoretical frameworks and practical decision-making in infrastructure maintenance. By conducting a case study in a densely populated area of a developing nation, the study validates the effectiveness of the proposed approach in mitigating risks and improving system performance. The overarching goal of the research is to equip power distribution utilities with a robust toolset to optimize resource allocation, enhance system reliability, and ensure regulatory compliance. This strategic initiative aims to empower stakeholders with informed decision-making capabilities, ultimately fostering a safer, more reliable power distribution infrastructure that benefits both utilities and communities they serve.