The protective relays used in modern industrial installations are complex microprocessor-based devices. Some of them deserve to be called protection programmable logic controllers (PLCs) due to their complexity and flexibility. The impressive abilities of these relays require the careful design and documentation of the intended functions and philosophies underlying them. Interrelay communications for high-speed zone-selective interlocking and complex control interlocking and intertripping add further complexities, as does the common practice of having multiple design entities working on different portions of the same facility. This article considers documentation schemes developed for two recent projects that included complex protection equipment. Protection philosophies and narratives, communications scheme documentation, and programmable logic documentation are discussed in an effort to illustrate a complete approach that will be useful to both specialists and field personnel for understanding protection systems.

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基于微处理器的保护继电器配置：工业应用中的有效文档

现代工业装置中使用的保护继电器是基于微处理器的复杂设备。由于其复杂性和灵活性，其中一些值得称为保护可编程逻辑控制器 (PLC)。这些继电器令人印象深刻的能力需要仔细设计和记录它们背后的预期功能和理念。用于高速区域选择联锁和复杂控制联锁和联锁的互继电器通信进一步增加了复杂性，就像让多个设计实体在同一设施的不同部分工作的常见做法一样。本文考虑为包括复杂保护设备的两个最近项目开发的文档方案。保护理念和叙述，通信计划文件，