标准摘要
[中文适用范围]： 本文件适用于光伏（PV）系统组件和通信网络，这些网络支持使用电力线通信的直流关断设备通信。本文件定义了如何将整个光伏系统的运行状态（正常/关断）传播到构成光伏系统的各个发电组件。本文件还描述了用于支持此应用的电力线通信网络的相关要求和约束。注1：可能存在与本文件所涵盖方法不同的通信系统。例如，所有PLC通信组件来自同一制造商的系统，本文件不适用。注2：本文件范围不包括直流关断启动机制、断开和断电的要求。注3：本文件不涉及是否需要直流关断。注4：EMC要求不包括在本文件中。 [外文原描述]： IEC 63257:2026 applies to photovoltaic (PV) system components and communication networks supporting the communication of the DC shutdown equipment using power line communication. This document defines how to propagate the operational state of the entire PV system (normal / shutdown) to the individual power production components comprising the PV system. The document also describes requirements and constraints associated with power line communication networks that are used to support this application. This document defines the communication requirements for reducing the output voltage of the DC cables that leave a PV array. This output voltage reduction function can support emergency responders during firefighting operations. For this function, communication is necessary from the inverter / initiator to the PV-modules.
英文名称Power line communication for DC shutdown equipment - Communication signal, physical layer