Lifetime assessment of semi-submersible wind turbines by Gaidai risk evaluation method

IF 3.4 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Oleg Gaidai, Alia Ashraf, Yu Cao, Jinlu Sheng, Yan Zhu, Zirui Liu
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引用次数: 0

Abstract

As the global agenda turns more towards the so-called challenge of climate change and lowering carbon emissions, research into green, renewable energy sources becoming nowadays more and more popular. Offshore wind power, produced by FOWTs (i.e., Floating Offshore Wind Turbines), is one such substitute. It is a significant industrial part of the contemporary offshore wind energy industry and produces clean, renewable electricity. Accurate operational lifetime assessment for FOWTs is an important technical safety issue, as environmental in situ loads can lead to fatigue damage as well as extreme structural dynamics, which can cause structural damage. In this study, in situ environmental hydro and aerodynamic environmental loads, that act on FOWT, given actual local sea conditions have been numerically assessed, using the FAST coupled nonlinear aero-hydro-servo-elastic software package. FAST combines aerodynamics and hydrodynamics models for FOWTs, control and electrical system dynamics models, along with structural dynamics models, enabling coupled nonlinear MC simulation in the real time. The FAST software tool enables analysis of a range of FOWT configurations, including 2- or 3-bladed horizontal-axis rotor, pitch and stall regulation, rigid and teetering hub, upwind and downwind rotors. FAST relies on advanced engineering models—derived from the fundamental laws, however with appropriate assumptions and simplifications, supplemented where applicable with experimental data. Recently developed Gaidai reliability lifetime assessment method, being well suitable for risks evaluation of a variety of sustainable energy systems, experiencing nonlinear, potentially extreme in situ environmental loads, throughout their designed service life. The main advantage of the advocated Gaidai risks evaluation methodology being its ability to tackle simultaneously a large number of dynamic systems' degrees of freedom, corresponding to the system's critical components.

用 Gaidai 风险评估法评估半潜式风力涡轮机的寿命
随着全球议程更多地转向所谓的气候变化挑战和降低碳排放,对绿色可再生能源的研究如今越来越受欢迎。由 FOWT(即浮式海上风力涡轮机)生产的海上风力发电就是这样一种替代能源。它是当代海上风能产业的重要组成部分,可生产清洁、可再生的电力。对 FOWT 的运行寿命进行准确评估是一个重要的技术安全问题,因为原位环境荷载会导致疲劳损坏,极端结构动态也会造成结构损坏。本研究使用 FAST 非线性航空-水力-伺服-弹性耦合软件包,对当地实际海况下作用于 FOWT 的原位环境水力和空气动力载荷进行了数值评估。FAST 结合了 FOWT 的空气动力学和流体动力学模型、控制和电气系统动力学模型以及结构动力学模型,可进行实时耦合非线性 MC 模拟。FAST 软件工具可分析一系列 FOWT 配置,包括 2 或 3 片水平轴转子、俯仰和失速调节、刚性和摇摆轮毂、上风和下风转子。FAST 依靠先进的工程模型,这些模型源自基本定律,但有适当的假设和简化,并在适当的地方辅以实验数据。最近开发的 Gaidai 可靠性寿命评估方法非常适合对各种可持续能源系统进行风险评估,这些系统在整个设计使用寿命期间都会承受非线性、潜在极端的现场环境负荷。所提倡的 Gaidai 风险评估方法的主要优点是能够同时处理大量动态系统的自由度,与系统的关键部件相对应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
8.60
自引率
0.00%
发文量
1
审稿时长
13 weeks
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