标准摘要
[中文适用范围]： IEC TR 61850-90-20:2025 是一份技术报告，描述了系统中冗余的应用场景。本文档考虑了功能和设备复制的应用案例，并涵盖了消息层的信息流冗余。本文档不涉及功能安全。为保持对本文档相关内容的聚焦，一些图表和示意图未显示电气接线、冗余线圈等，因为这些内容对应用案例不重要。本文档并非关于冗余系统设计的指南；有关冗余系统设计的指导内容可参考相关教科书。 [外文原描述]： IEC TR 61850-90-20:2025, which is a technical report, describes use cases of redundancy in systems. This document considers use cases of duplication of function and devices and covers redundancy of information flow at message level. Functional safety is out of scope of this document. To keep focus on details relevant for this document, some figures and drawings do not show electrical wiring, redundant coils, etc, where this is not important for the use case. This document is not a guideline on the design of redundancy systems; guidance on designing redundancy systems can be found in textbooks
英文名称Communication networks and systems for power utility automation - Part 90-20: Use cases of redundancy in systems