DYNAMIC INCOMPLETE PREVENTIVE MAINTENANCE OF WIND TURBINE BASED ON BOUNDARY INTENSITY PROCESS

Ren Lina; Li Xueliang; Wang Ziqian; Li Kangning

doi:10.19912/j.0254-0096.tynxb.2023-1297

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (12) : 277-283. DOI: 10.19912/j.0254-0096.tynxb.2023-1297

DYNAMIC INCOMPLETE PREVENTIVE MAINTENANCE OF WIND TURBINE BASED ON BOUNDARY INTENSITY PROCESS

Ren Lina, Li Xueliang, Wang Ziqian, Li Kangning

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Abstract

To reduce equipment maintenance costs and minimize the resource waste, a reliability-constrained dynamic incomplete preventive maintenance (PM) method for wind turbines is proposed based on the boundary intensity process theory. The failure process of wind turbines is described using the boundary intensity process, and the age reduction factor and failure intensity increasing factor are introduced to give the failure intensity of the composite maintenance model. By minimizing the average maintenance cost as the objective function, the calculation formulas for the dynamic PM interval and replacement cycle of wind turbines are derived using an iterative method, and the optimal number of PM for wind turbines is determined. This article has been validated through an engineering example and compared with models based on the Weibull distribution and models that do not consider replacement thresholds. The results indicate that this method can reduce the average maintenance cost of wind turbines by 6.7% and 10.7% and prolong the lifespan by 342 days and 128 days, respectively.

Key words

wind turbines / reliability / preventive maintenance / boundary intensity process / failure intensity / dynamic PM interval

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Ren Lina, Li Xueliang, Wang Ziqian, Li Kangning. DYNAMIC INCOMPLETE PREVENTIVE MAINTENANCE OF WIND TURBINE BASED ON BOUNDARY INTENSITY PROCESS[J]. Acta Energiae Solaris Sinica. 2024, 45(12): 277-283 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1297

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