Cost Benefit of Implementing Advanced Monitoring and Predictive Maintenance Strategies for Offshore Wind Farms
Cost Benefit of Implementing Advanced Monitoring and Predictive Maintenance Strategies for Offshore Wind Farms
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DOI：
10.3390/en14164922
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发表时间：
2021-08
期刊：
影响因子：
3.2
通讯作者：
A. Turnbull;J. Carroll
中科院分区：
文献类型：
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作者：
A. Turnbull;J. Carroll
在过去十年中，风力涡轮机状态监测系统的进步使优化运行性能和降低与部件故障和其他计划外维护活动相关的成本成为可能。虽然许多研究侧重于提供与预测性维护有关的更自动化和更准确的故障诊断和预测，但迄今为止，量化这类战略的影响的努力相对有限。通过基于时间的风电场运行仿真，本文量化了预测性维护策略和基于状态的维护策略的成本效益，同时考虑了直接运行和维护成本以及生产损失。预测性和基于条件的策略是通过调整与更被动的维护方法相关的已知部件故障和维修率来建模的。结果表明，假设25%的发电机和变速箱的重大故障可以通过高级监测进行诊断并在需要进行重大更换之前进行修复，则通过早期干预可以节省高达8%的直接运行和维护成本，同时最高可减少11%的产量损失。与预测性策略相比，基于条件的方法可以在更换之前利用更长的部件寿命，从而进一步节省成本。然而，如果权衡组件故障和过早更换组件之间的风险，结果表明，如果可以避免重型升降船，那么更早进行干预会更具成本效益，即使这意味着在现场的整个生命周期内需要额外的重大维修。
Advancements in wind turbine condition monitoring systems over the last decade have made it possible to optimise operational performance and reduce costs associated with component failure and other unplanned maintenance activities. While much research focuses on providing more automated and accurate fault diagnostics and prognostics in relation to predictive maintenance, efforts to quantify the impact of such strategies have to date been comparatively limited. Through time-based simulation of wind farm operation, this paper quantifies the cost benefits associated with predictive and condition-based maintenance strategies, taking into consideration both direct O&M costs and lost production. Predictive and condition-based strategies have been modelled by adjusting known component failure and repair rates associated with a more reactive approach to maintenance. Results indicate that up to 8% of direct O&M costs can be saved through early intervention along with up to 11% reduction in lost production, assuming 25% of major failures of the generator and gearbox can be diagnosed through advanced monitoring and repaired before major replacement is required. Condition-based approaches can offer further savings compared to predictive strategies by utilising more component life before replacement. However, if weighing up the risk between component failure and replacing a component too early, results suggest that it is more cost effective to intervene earlier if heavy lift vessels can be avoided, even if that means additional major repairs are required over the lifetime of the site.