Decision of maintenance mode for power plant equipment based on entropy weight and analytic hierarchy process

Aiming at the difficulty in selecting the maintenance mode for power plant equipment,the fuzzy comprehensive evaluation method based on entropy weight and analytic hierarchy process(AHP) is suggested,which solves the casualness and subjectivity problem about weight decision in traditional fuzzy comprehensive evaluation method.The entropy weight and AHP are united with fuzzy comprehensive evaluation,and the maintenance mode decision is divided into some layers composed of index factors.Then the subjective and objective weights are calculated according to the judgment matrix and fuzzy evaluation matrix corresponding with index factors,and consequently the comprehensive weights are obtained through weight fitting.Finally the maintenance mode can be decided through operation of comprehensive weight and judgment matrix based on the principle of fuzzy comprehensive evaluation.It is demonstrated by application example that this method is valid and feasible,and can be applied to evaluate the maintain mode and supply the basis of condition-based maintenance decision for power plant equipment.