PREVENTIVE MAINTENANCE STRATEGY OPTIMIZATION OF DISTRIBUTED ENERGY SUPPLY EQUIPMENT BASED ON IMPROVED EWM-AHP

Fei Siqi; Yuan Tiejiang; Qi Chen; Zhai Baoyu

doi:10.19912/j.0254-0096.tynxb.2021-1510

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (4) : 341-348. DOI: 10.19912/j.0254-0096.tynxb.2021-1510

PREVENTIVE MAINTENANCE STRATEGY OPTIMIZATION OF DISTRIBUTED ENERGY SUPPLY EQUIPMENT BASED ON IMPROVED EWM-AHP

Fei Siqi¹, Yuan Tiejiang¹, Qi Chen¹, Zhai Baoyu²

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Abstract

This work proposes a preventive maintenance model of distributed energy supply equipment based on improved EWM-AHP. The importance and failure hazard evaluation indexes are selected, and the entropy weight method and analytic hierarchy process are combined to calculate the comprehensive weight of each preventive maintenance evaluation index, which is quantified as the importance and hazard index of equipment and its components. The preventive maintenance cost model based on Weibull distribution is established to form an optimization system considering three preventive maintenance indexes： importance, harm and economy. Then, taking the maintenance decision index based on improved entropy weight hierarchy method is minimized as a goal, a preventive maintenance model of distributed energy supply equipment based on improved EWM-AHP is proposed to calculate the optimal maintenance interval of distributed energy supply equipment. Taking the key equipment of distributed energy supply system and typical wind turbine components as an example, the results show that the proposed preventive maintenance strategy can better reflect the fault occurrence law of the maintenance object to determine a more scientific and reasonable maintenance time and cycle.

Key words

importance / criticality / energy supply system / improved EWM-AHP / preventive maintenance

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Fei Siqi, Yuan Tiejiang, Qi Chen, Zhai Baoyu. PREVENTIVE MAINTENANCE STRATEGY OPTIMIZATION OF DISTRIBUTED ENERGY SUPPLY EQUIPMENT BASED ON IMPROVED EWM-AHP[J]. Acta Energiae Solaris Sinica. 2023, 44(4): 341-348 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1510

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