本文件提供了供电系统领域的系统结构规则，作为系统结构一般原则的补充，包括IEC81346-1. 基于这些原则，为任何系统中对象的明确参考命名的制定提供了规则和指导。 参考名称用于标识对象，以便创建和检索有关对象的信息，以及在实现时，有关其相应组件的信息。 在组件上标记的参考名称是在不同类型的文档中查找有关该对象的信息的关键。 这些原则是通用的，适用于所有技术领域（例如机械工程、电气工程、建筑工程、工艺工程）。它们可以用于基于不同技术的系统，也可以用于结合多种技术的系统。 本文件还定义了电源系统领域中系统和空间的类别。

This document provides rules for structuring of systems in the domain of power supply systems, being supplementary to the general principles for the structuring of systems including structuring of information about systems specified in IEC？81346-1. Based on these principles, rules and guidance are given for the formulation of unambiguous reference designations for objects in any system. The reference designation identifies objects for the purpose of creation and retrieval of information about an object and, where realized, about its corresponding component. A reference designation labelled at a component is the key to finding information about that object among different kinds of documents. The principles are general and are applicable to all technical areas (e.g. mechanical engineering, electrical engineering, construction engineering, process engineering). They can be used for systems based on different technologies or for systems combining several technologies. This document also defines classes for systems and spaces in the field of power supply systems.