Optimal maintenance strategy of wind turbine subassemblies to improve the overall availability

El-Naggar, Mohamed; Sayed, A.; Elshahed, Mostafa; EL-Shimy, M.

doi:10.1016/j.asej.2023.102177

Cited by 6 publications

(4 citation statements)

References 50 publications

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“…Europe is recognised as the world leader in wind energy, and many new regions will experience a definite increase in wind power installation once 100 MW wind generating capacity is achieved [5,6]. To analyse the behaviour of different wind turbines, wind tunnels and computational fluid dynamic (CFD) simulations need to be applied.…”

Section: Introductionmentioning

confidence: 99%

“…To analyse the behaviour of different wind turbines, wind tunnels and computational fluid dynamic (CFD) simulations need to be applied. Wind tunnels have commonly been described as equipment designed to obtain air-flow conditions to capacity is achieved [5,6]. To analyse the behaviour of different wind turbines, wind tunnels and computational fluid dynamic (CFD) simulations need to be applied.…”

Section: Introductionmentioning

confidence: 99%

“…Sci. 2023, 13, x FOR PEER REVIEW 2 of 23 capacity is achieved [5,6]. To analyse the behaviour of different wind turbines, wind tunnels and computational fluid dynamic (CFD) simulations need to be applied.…”

Section: Introductionmentioning

confidence: 99%

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A New Procedure to Design an Open Circuit Blowing Subsonic Moist-Air Wind Tunnel

Orosa,

García-Bustelo,

Vergara

2023

Applied Sciences

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The present research work shows how a functional subsonic moist-air wind tunnel has been designed. Although this type of wind tunnel has never been developed to date, it is particularly interesting to develop a satisfactory design of feasibility under moist air conditions. Low-speed vertical-axis wind turbines employ different kinds of rotors, such as Savonius, Darrieus, and H-rotor. All these wind turbines present clear advantages, e.g., the horizontal-axis wind turbines are omnidirectional. This means they can work under different wind directions, need lower maintenance, and begin working under low wind speeds of 3 m/s. Recently, a new application of wind concentrators enabled the vertical-axis wind turbines to improve their performance coefficient based on new concepts like moist air phase change, which are being analysed to improve energy conversion. Thus, expectations were raised to design a suitable wind tunnel that accounts for the relative humidity of moist air. An initial prototype showed that the behaviour of open wind tunnels where the relative humidity of moist air was controlled by an adiabatic evaporative process was satisfactory. However, for such wind tunnels, certain improvements like computer control systems would need to be developed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A New Procedure to Design an Open Circuit Blowing Subsonic Moist-Air Wind Tunnel

Orosa,

García-Bustelo,

Vergara

2023

Applied Sciences

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“…A common approach is to quantify all WLC activities, including operation and maintenance (O&M) costs, as costs influencing maintenance strategy decisions [18], i.e., life cycle cost (LCC), especially the O&M cost, which is regarded as an important decision basis for maintenance strategy. This method, known as life cycle cost (LCC) analysis, has been widely employed in the field of wind turbine maintenance and has proven effective in improving overall system performance and reducing total maintenance costs [19]- [23]. However, there have been relatively few studies in the field of EMU maintenance [24], and operation costs (OC) are mostly regarded as costs unaffected by component deterioration [18], ignoring the influence of component deterioration process and maintenance activities on operating costs such as energy costs and depreciation costs, which cannot dynamically reflect the correlation between the operating state of components and their maintenance activities.…”

Section: Introductionmentioning

confidence: 99%

Strategy Optimization of Multi-Component System Opportunity Maintenance for Electric Multiple Units From a Lean Maintenance Perspective

Li,

Wang,

Xiong

et al. 2023

IEEE Access

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The deterioration characteristics of electric multiple units (EMUs) components can lead to complex and costly maintenance processes. This paper focuses on investigating the influence mechanism of the interaction between operation and maintenance (O&M) activities within the whole life cycle (WLC) of EMUs' components on the maintenance strategy, based on the concept of lean maintenance (LM). A linear relationship is established between operating costs and the equivalent service age to reflect the trend of the component operating conditions dynamically in relation to deterioration level and maintenance activities, and a bi-level imperfect preventive maintenance (BIPM) strategy considering operating cost (OC) is proposed at the component level. At the system level, a multi-level preventive opportunity maintenance (POM) strategy based on the opportunity maintenance mileage window (OMMW) is proposed for the serial system of EMUs to reduce the number of system downtimes and minimize value waste and achieve long-term economic benefits. The experimental results demonstrated that compared to maintenance strategies that do not consider operating costs, this strategy optimizes the total maintenance cost for multicomponent systems of EMUs in the long term by implementing more aggressive measures while ensuring component reliability, system availability, and schedule rationality.

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Shaping of the risk of a series-parallel manufacturing structure maintenance according to quasi-coherence and the K-th survival value

Zwolińska,

Kubica

2024

Computers & Industrial Engineering

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Optimal maintenance strategy of wind turbine subassemblies to improve the overall availability

Cited by 6 publications

References 50 publications

A New Procedure to Design an Open Circuit Blowing Subsonic Moist-Air Wind Tunnel

A New Procedure to Design an Open Circuit Blowing Subsonic Moist-Air Wind Tunnel

Strategy Optimization of Multi-Component System Opportunity Maintenance for Electric Multiple Units From a Lean Maintenance Perspective

Shaping of the risk of a series-parallel manufacturing structure maintenance according to quasi-coherence and the K-th survival value

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