An Approach for Evaluating the Influence of Accessibility on Offshore Wind Power Generation
An Approach for Evaluating the Influence of Accessibility on Offshore Wind Power Generation
复制标题
海上风电可达性影响评估方法
DOI：
10.20944/preprints201701.0079.v1
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发表时间：
2017
影响因子：
5
通讯作者：
Jianbo Guo
中科院分区：
文献类型：
--
作者：
Mian Du;Jun Yi;P. Mazidi;Lin Cheng;Jianbo Guo
对于海上风力发电而言，由于海上运输天气条件的限制，可达性是对运行维护影响较大的主要因素之一。本文提出了一个探索离岸站点可达性的框架。首先，定义并考虑几种维护类型。接下来，引入数据可视化过程，以深入了解访问时段随时间的分布。然后，提出了一种基于有限状态马尔可夫链的严格数学方法，从维护角度评估海上站点的可达性。使用海洋站点五年的天气数据来证明该方法的适用性和结果。主要结果表明，所提出的框架可以有效地调查不同时间尺度的可访问性，并且能够捕捉访问时段的分布模式。而且，基于开发的马尔可夫链，可以估计某个访问时段的平均等待时间。有了有关海上风电场维护的更多信息，就可以计算出由于时间延迟而导致的预期生产损失。
For offshore wind power generation, accessibility is one of the main factors that has great impact on operation and maintenance due to constraints on weather conditions for marine transportation. This paper presents a framework to explore the accessibility of an offshore site. At first, several maintenance types are defined and taken into account. Next, a data visualization procedure is introduced to provide an insight into the distribution of access periods over time. Then, a rigorous mathematical method based on finite state Markov chain is proposed to assess the accessibility of an offshore site from the maintenance perspective. A five-year weather data of a marine site is used to demonstrate the applicability and the outcomes of the proposed method. The main findings show that the proposed framework is effective in investigating the accessibility for different time scales and is able to catch the patterns of the distribution of the access periods. Moreover, based on the developed Markov chain, the average waiting time for a certain access period can be estimated. With more information on the maintenance of an offshore wind farm, the expected production loss due to time delay can be calculated.