架空输电线路的设计准则

[中文适用范围]： 本国际标准规定了基于可靠性设计原则的架空线路的载荷和强度要求。这些要求适用于45kV及以上的线路，但也可应用于标称电压较低的线路。 本文档还为使用可靠性概念并采用概率或半概率方法的国家架空输电线路标准的制定提供了一个框架。这些国家标准需要建立当地的气候数据以供本标准的应用，以及其他特定于国家/地区的数据。 尽管本标准中的设计标准适用于新线路，但许多概念可用于解决现有线路的改造、升级和增容的设计和可靠性要求。 本文档不包括线路组件的详细设计，如支撑、基础、导体或绝缘子串。 [外文原描述]： IEC 60826:2017 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60826:2017: specifies the loading and strength requirements of overhead lines derived from reliability-based design principles. These requirements apply to lines 45 kV and above, but can also be applied to lines with a lower nominal voltage. This document also provides a framework for the preparation of national standards dealing with overhead transmission lines, using reliability concepts and employing probabilistic or semi-probabilistic methods. These national standards will need to establish the local climatic data for the use and application of this standard, in addition to other data that are country- specific. Although the design criteria in this standard apply to new lines, many concepts can be used to address the design and reliability requirements for refurbishment, upgrading and uprating of existing lines. This document does not cover the detailed design of line components such as supports, foundations, conductors or insulators strings. This fourth edition cancels and replaces the third edition published in 2003. It constitutes a technical revision. The main technical changes with regard to the previous edition are as follows: This standard has been further simplified by removing many informative annexes and theoretical details that can now be found in CIGRE Technical Brochure 178 and referred to as needed in the text of the standard. Many revisions have also been made that reflect the users experience in the application of this standard, together with information about amplification of wind speed due to escarpments. The annexes dealing with icing data have also been updated using new work by CIGRE. Key words: Overhead lines, Overhead transmission lines, reliability, energy