IEC指南111-1:20 23是一份横向出版物，为高压变电站（高于1 kV）产品和系统标准的协调提供指导。它针对大多数情况下高压（HV）变电站中的交流设备。 本文件包含所有高压变电站产品和系统标准的通用规范建议，每个标准都由每个技术委员会的特定技术背景来增强，自然保留了其技术选择的自由。 本文件适用于制定变电站交流部分高压电力电子设备的产品和系统标准。 IEC指南111-1的第一版与IEC指南111-2一起取消并取代了2004年出版的IEC指南111的第二版。与上一版相比，主要变化如下: IEC指南111修订为两部分——第1部分用于交流，第2部分用于直流（第2部分待准备）； 文件范围扩大到交流高压变电站电气设备； 纳入了新的定义； 正常条件已修订； 其他条款的一般性修订。

IEC Guide 111-1:2023 is a horizontal publication which gives guidance for the harmonization of product and system standards for HV substations (higher than 1 kV). It addresses AC equipment which is found in high-voltage (HV) substations in most cases.
This document contains recommendations for common specifications for all HV substation product and system standards, each of which is augmented by the technical background specific to each technical committee, which naturally retains freedom in its technical choices.
This document is applicable when developing product and systems standards for HV power electronic equipment for the AC part of the substation.
This first edition of IEC Guide 111-1, together with IEC Guide 111-2, cancels and replaces the second edition of IEC Guide 111 published in 2004.
The main changes with respect to the previous edition are as follows:

1. IEC Guide 111 is revised into two parts – Part 1 for AC and Part 2 for DC (Part 2 to be prepared);
2. the scope of the document has been expanded to cover electric equipment in AC high-voltage substations;
3. new definitions have been included;
4. normal conditions have been revised;
5. a general revision of other clauses.