风力发电系统.第3-1部分:固定式海上风力涡轮机的设计要求

[中文适用范围]： 本部分 IEC 61400 规定了海上风电场风机站外部条件评估的附加要求，并规定了确保固定式海上风力涡轮机工程完整性的基本设计要求。其目的是在规划寿命期内提供适当的保护，以抵御来自各种危害的损害。本文档侧重于海上风力涡轮机结构部件的工程完整性，但也涉及子系统，如控制和保护机制、内部电气系统和机械系统。如果支撑结构受到流体动力负荷并且建立在海床上，则风力涡轮机应被视为固定式海上风力涡轮机。本文档规定的要求不足以确保浮动式海上风力涡轮机的工程完整性。对于浮动装置，请参阅 IEC 61400-3-2。本文档其余部分假设术语“海上风力涡轮机”是指固定在海底的装置。本文档应与第 2 条中提到的适当 IEC 和 ISO 标准一起使用。特别是，本文档与 IEC 61400-1 的要求完全一致。根据本文档设计的海上风力涡轮机的安全等级应达到或超过 IEC 61400-1 中固有的水平。在某些条款中，为了有助于清晰度，包含了对 IEC 61400-1 文本的复制。 [外文原描述]： IEC 61400-3-1:2019 outlines the minimum design requirements for fixed offshore wind turbines and is not intended for use as a complete design specification or instruction manual. Several different parties may be responsible for undertaking the various elements of the design, manufacture, assembly, installation, erection, commissioning, operation and maintenance of an offshore wind turbine and for ensuring that the requirements of this document are met. The division of responsibility between these parties is a contractual matter and is outside the scope of this document. This edition cancels and replaces the first edition of IEC 61400-3 published in 2009. This edition includes the following significant technical changes with respect to the first edition of IEC 61400-3: a) The design load table has been revised to simplify the approach to waves, both for several gust cases with the Normal Sea State, and for a number of cases with the Extreme Sea State. The guidance for load calculations has been altered accordingly; c) For load safety factors reference is now made directly to IEC 61400-1; d) Control system has been aligned with the latest updates in IEC 61400-1; e) Wave spectra has been replaced by a reference to ISO 19901-1; f) The annex on ice loading has been revised and updated g) Two informative annexes concerning tropical cyclones have been introduced h) Other parts of the text have been aligned with IEC 61400-1