An opportunistic condition-based maintenance policy for offshore wind turbine blades subjected to degradation and environmental shocks

Shafiee, Mahmood; Finkelstein, Maxim; Bérenguer, Christophe

doi:10.1016/j.ress.2015.05.001

Cited by 166 publications

(85 citation statements)

References 20 publications

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“…Shafiee et al [3] use the deterioration level of multibladed wind turbine system to rise/trigger the unplanned maintenance action for any failure items, while electrical energy as the useful output of this system is not fully taken into account. So energy efficiency is seen only as the auxiliary result of these previous CBM plans.…”

Section: Literature Reviewmentioning

confidence: 99%

Development and Optimization of a Condition-Based Maintenance Policy with Sustainability Requirements for Production System

Jiang

Tam

Lyu

2018

Mathematical Problems in Engineering

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In the field of condition-based maintenance, maintenance costs and system reliability criteria are the primary considerations for traditional maintenance management. These methods lack consideration of the environmental impact caused by equipment degradation, such as excessive emissions and energy consumption. In addition, because equipment degradation has various impacts on the ecological environment, companies with excessive emissions and energy consumption can receive huge fines, making it of great value to study ecoconscious maintenance strategies. In this paper, we propose a condition-based maintenance strategy considering energy consumption and carbon dioxide emissions. The major objective of the research is to extend a model which integrates ecological aspects with maintenance decision-making and optimization. The simulation and sensitivity analyses conducted verify that the model proposed can minimize total costs, as well as the environmental impact.

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Section: Literature Reviewmentioning

confidence: 99%

Development and Optimization of a Condition-Based Maintenance Policy with Sustainability Requirements for Production System

Jiang

Tam

Lyu

2018

Mathematical Problems in Engineering

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“…Also, both variables may be considered independent when the equipment burnout values at any moment have low ratio given the amount of damage caused by any shock. In some studies, shock and burnout variables dependent assumption are on the grounds that shocks inflicted in the system as a result of equipment the external setting (operating conditions) and equipment burnout in terms of the internal conditions of the system (Shafiee et al, 2015).…”

Section: System Description Assumptions and Parametersmentioning

confidence: 99%

“…The basic assumptions of shock models as included by Shafiee et al (2015) are valid here. The equipment is under shocks that the distribution of shocks event follows non-homogeneous Poisson process, .…”

Section: Cumulative Damage Caused By Shockmentioning

confidence: 99%

Condition-based maintenance considering shock and degradation processes

Komijani¹,

Shahin²,

Shahin³

et al. 2017

10.5267/j.dsl

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An important issue in maintaining the industrial equipment is to introduce an appropriate maintenance policy to monitor the conditions of the equipment. In this research, an investigation on the concurrent effects of erosion and random shocks during the useful life of the equipment is studied. In this regard a model is introduced to optimize the total cost including logistic, complete repair and incomplete repair costs. The proposed model determines the optimal number of the incomplete repairs, the time duration between inspections and the probability of equipment to be failed. A numerical example is solved by means of computer simulation. The results indicate that the proposed model performs well for minimizing the costs of maintenance and repair.

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“…Shafiee and Finkelstein 16 proposed an optimal age-based group maintenance policy for a number of critical bearings in a wind turbine system subjected to deterioration. Shafiee et al 17 developed an optimal opportunistic condition-based maintenance policy for offshore wind turbine blades subjected to stress corrosion cracking (SCC) and environmental shocks.…”

Section: Maintenance Optimization In Wind Energy Sectormentioning

confidence: 99%

Optimal Redundancy and Maintenance Strategy Decisions for Offshore Wind Power Converters

Shafiee

Patriksson

Strömberg

et al. 2015

Int. J. Rel. Qual. Saf. Eng.

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Analysis of field failure data collected from various wind farm databases indicates that the power converters are among the most critical components in offshore wind turbines, since they suffer from a high failure rate. One efficient approach to enhance the reliability and availability of the wind power systems is through using a redundant converter design, in which a set of power converters is placed together in parallel. The main advantage of a multiple parallel converter system is that the failure of one converter will not necessarily lead to the failure of the entire system. It may however increase the wind turbine's acquisition cost, volume, and weight. In this paper, we propose an approach of joint redundancy and maintenance strategy optimization for offshore wind power converters, aiming to simultaneously determine the "optimal allocation of redundant converters" and the "optimal threshold number of converters that are allowed to fail before sending a maintenance crew to the offshore platform". The optimal solution under various systemlevel constraints (such as reliability, weight, and the available space in nacelle) is derived and the conditions required to make using a redundant system beneficial are discussed. The proposed design is applied to an offshore wind turbine system and its performance is evaluated using a Monte-Carlo simulation technique. Finally, the results are compared with the conventional power converter system and a sensitivity analysis is conducted in order to make the proposed approach applicable for the next generation of wind turbines.

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An opportunistic condition-based maintenance policy for offshore wind turbine blades subjected to degradation and environmental shocks

Cited by 166 publications

References 20 publications

Development and Optimization of a Condition-Based Maintenance Policy with Sustainability Requirements for Production System

Development and Optimization of a Condition-Based Maintenance Policy with Sustainability Requirements for Production System

Condition-based maintenance considering shock and degradation processes

Optimal Redundancy and Maintenance Strategy Decisions for Offshore Wind Power Converters

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