风能发电系统 第3-2部分：浮动海上风力涡轮机的设计要求

[中文适用范围]： IEC 61400-3-2:2025 规定了评估漂浮式海上风力发电机组（FOWT）现场外部条件的要求，并规定了确保浮式风力发电机组工程完整性的基本设计要求。其目的是在计划的使用寿命期间提供适当的保护水平，以防所有预期的危害造成损坏。 该文件侧重于浮式风力发电机组结构组件的工程完整性，同时也关注诸如控制和保护机制、内部电气系统和机械系统的子系统。 本第一版取消并替代了2019年出版的IEC TS 61400-3-2。与IEC TS 61400-3-2相比，本版在技术上进行了以下重要更改： a) IEC 61400-3-1中的相关内容已被迁移到IEC 61400-3-2中，使IEC 61400-3-2成为独立的文件，无需直接与IEC 61400-3-1一起阅读。 b) 第6章关于气象海况条件的多个修改考虑了漂浮式风力发电机组及其将要安装的海上地点的特点，包括：（1）强调了波向扩展的重要性，因为它可能导致更大的负载作用于FOWT，包括新增的信息性附录O和P；（2）解释了涌浪特性，这可能对某些漂浮式风力发电项目有关，并添加了关于涌浪特性的新信息性附录R。 c) 第7.1、7.2、7.3、7.4和7.5节已更改以包含修订后的DLC表及其相关描述，包括但不限于更新的方向性要求、波况要求、冗余检查和损坏稳定性情况以及强度检查案例；还对与载荷计算和模拟要求相关的指导和必要性进行了进一步的更新。 d) 第7.6节已更新有关疲劳评估的指导，并澄清了服务性分析和WSD适用材料的要求。相关附录L已更新并添加了一个新的附录M，以阐明浮式结构的安全系数、载荷及其效应方法。 e) 引入了第8章中关于与风力发电机组控制器互动的浮体控制系统概念。 f) 第11章已更名为“基础和子结构设计”为“锚定设计”，并增加了瞬态条件的要求。 g) 在第16章中添加了一个更详细的混凝土设计条款，附带一个信息性附录Q。 h) 更新了第15章以提高易用性，借鉴了石油和天然气行业经验，并考虑了风力发电机组的独特特性；更新包括TLPs、损坏稳定性、动态稳定性的指导、测试以及关于如何分析碰撞概率的附录S。 [外文原描述]： IEC 61400-3-2:2025 specifies requirements for assessment of the external conditions at a floating offshore wind turbine (FOWT) site and specifies essential design requirements to ensure the engineering integrity of FOWTs. Its purpose is to provide an appropriate level of protection against damage from all anticipated hazards during the planned lifetime. This document focuses on the engineering integrity of the structural components of a FOWT but is also concerned with subsystems such as control and protection mechanisms, internal electrical systems and mechanical systems. This first edition cancels and replaces IEC TS 61400-3-2, published in 2019. This edition includes the following significant technical changes with respect to IEC TS 61400‑3-2: a) The relevant contents of IEC 61400-3-1 have been migrated into IEC 61400-3-2, making IEC 61400-3-2 a self-standing document that does not have to be read directly in conjunction with IEC 61400-3-1. b) Several modifications have been made regarding metocean conditions in Clause 6 considering the nature of FOWT and the offshore site where FOWT will be installed, including: (1) the importance of wave directional spreading has been highlighted as it may result in larger loads for FOWT, including the addition of the new informative Annex O and Annex P and (2) the characteristic of swell has been explained, which may be relevant for some FOWT projects, including the addition of new informative Annex R regarding the characteristic of swell. c) Subclauses 7.1, 7.2, 7.3, 7.4 and 7.5 have been changed to include a revised DLC table and its related descriptions, including amongst others updated requirements on directionality, wave conditions, redundancy check and damage stability cases, and a robustness check case; further updates are made related to guidance and necessities provided on load calculations and simulation requirements. d) Subclause 7.6 has been updated with guidance on fatigue assessment along with clarifications on serviceability analysis and the applicable material for WSD; related Annex L has been updated and a new Annex M has been added for clarification of the safety factors and load and load effect approach for floating substructures e) The concept of floater control system that will interact with the wind turbine controller has been introduced in Clause 8. f) Clause 11 has been renamed from "Foundation and substructure design" to "Anchor design" and requirements for the transient conditions have been added. g) A more detailed clause regarding concrete design has been added to Clause 16 together with an informative Annex Q. h) Clause 15 has been updated with the aim to improve ease of use, using experience from oil and gas and considering unique wind turbine characteristics; updates included guidance for TLPs, damage stability, dynamic stability, testing and the addition for Annex S regarding how to analyse collision probability.