This paper proposes a maintenance management and risk reduction (MMRR) approach. The approach introduces two reliability-based indexes called condition indicator (CI) and risk indicator (RI). CI is a unit-less parameter that comes directly from monitored condition of a component and converts the categorical condition into a numerical value. RI in mega-watt represents the risk imposed by the health of a component onto the system. To demonstrate application of the indicators, they are implemented through an hourly network constraint unit commitment problem and applied in a test system where the analysis of impact of condition of the generators to the operation is the new contribution. The results demonstrate how addition of such indicators will impact the operation of the grid and maintenance scheduling. The results show the benefit for the system operator as the overall failure risk in the system is taken into account; and the benefit for the asset owner as the direct impact of the maintenance to be carried out can be investigated. Two of the main outcomes of the MMRR approach are: asset owners can analyze their maintenance strategies and evaluate their impacts in the maintenance scheduling; and system operators can operate the grid with higher security and lower risk of failure.
Keywords: Maintenance management, Condition monitoring, Health indicator, Risk reduction, Power system operation
Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability. Volumen: 231 Numero: 6 Páginas: 716-731
Journal Impact Factor: JCR impact factor 1.084 (2016)
DOI reference: 10.1177/1748006X17731901
Publicado en papel: Diciembre 2017. Publicado on-line: Septiembre 2017.