本文件定义了变电站内部、与变电站之间以及与变电站之间通信网络的设计、测试和运行的推荐做法。安全考虑包括在上述内容中。它没有建立新的基础通信标准。相反，本文件提供了设计这些通信网络的指南和最佳实践。

This document defines a recommended practice for the design, testing, and operation of communications networks within, to, and from electric power substations. Security considerations are included in the above. It does not establish a new underlying communications standard. Instead, this document presents guidelines and best practices for designing these communication networks.