Accessibility assessment for operation and maintenance of offshore wind farms in the North Sea
Accessibility assessment for operation and maintenance of offshore wind farms in the North Sea
复制标题
北海海上风电场运营和维护的可达性评估
作者：
M. Martini;R. Guanche;I. Losada;C. Vidal
着眼于海上风能的运行和维护应用，本文对北海的可达性进行了详细的分析。在对现有海上风电机组检修与进入规范进行回顾的基础上，运用集合理论给出了相关可达参数的严格数学表达式。从再分析数据库中提取长期和高分辨率的海洋气象数据，用于评估这些参数的时空变异性。在有效浪高和平均风速的限制下，分别对工作船和直升机进行了评估。同时受到浪高和风速的影响。并对海上起重机进场进行了分析。这导致英国海岸和北海南部地区非常容易进入，而丹麦和挪威海岸则经历了更恶劣的海洋环境。然而，这是由更高的风力资源来平衡的。此外，确定了强烈的季节性，同时在盆地的大部分地区，白天可达性急剧减少。冬季和秋季的白天对整个北海来说是非常困难的。在研究的农场中，Dogger Bank是迄今为止资源最高、可达性最低的农场，而Thorntonbank III是资源最低、可达性最高的农场。此外，可达性与所选择的可达性策略的风速和波高限制呈非线性关系。版权所有©2016 John Wiley & Sons， Ltd。
Focused on offshore wind energy operation and maintenance applications, this work presents a detailed accessibility analysis of the North Sea. After a review of existing normative dedicated to inspection and access of offshore wind turbines, a rigorous mathematical formulation of relevant accessibility parameters is given by means of the set theory. Long-term and high-resolution metocean data are extracted from reanalysis databases and used to evaluate spatial and temporal variability of such parameters. Respectively restricted by significant wave height and mean wind speed, access by workboat and helicopter is evaluated. Being affected by both wave height and wind speed. Access by offshore crane is also analyzed. It resulted that the UK coast and the southern region of the North Sea are highly accessible, while the coast of Denmark and Norway undergoes more severe metocean conditions. This is, however, balanced by a higher wind resource. Moreover, a strong seasonality is ascertained, together with a drastic reduction of accessibility during daytime in a vast part of the basin. Accessibility during daytime in winter and autumn is very difficult for the whole North Sea. Among the studied farms, Dogger Bank is by far the one with the highest resource and lowest accessibility, while Thorntonbank III the one with the lowest resource and highest accessibility. In addition, accessibility is non-linearly related to wind speed and wave height limits chosen for the access strategies covered. Copyright © 2016 John Wiley & Sons, Ltd.