電力設備群余寿命の経年変化と保全管理

抄録

This paper proposes new concept concerning the residual life of a power equipment group. The expectancy life of equipment group (defined as ‘equipment-residual-life’ in this paper) is gradually approach to zero as time passing just as like ‘human-life’. If the worn-out equipment replaces by new one successively for substituting its role in the power system, the residual life of equipment group up to the replacement time (defined as ‘replacement-residual-life’ in this paper) converges to the half of equipment mean life. This paper analyses the stochastic property and the yearly change of the equipment-residual-life and the replacement-residual-life by assuming the normal probability density function as the equipment life distribution. The typical simulations are illustrated for verifying the stochastic approaches and for discussing the related maintenance management.