标准摘要
[中文适用范围]： 本部分定义了IEC 61850中用于传输采样值的特定通信服务映射（SCSM），依据IEC 61850-7-2中的抽象规范。该映射是在混合协议栈上对抽象模型的映射，使用直接访问ISO/IEC 8802-3链路来传输采样值，并结合IEC 61850-8-1。每个SCSM由三部分组成：所使用的通信协议栈的规范、IEC 61850-7系列抽象规范在所用协议栈实际元素上的映射，以及协议栈未覆盖的功能的实现规范。 [外文原描述]： IEC 61850-9-2:2011 defines the specific communication service mapping for the transmission of sampled values according to the abstract specification in IEC 61850-7-2. The mapping is that of the abstract model on a mixed stack using direct access to an ISO/IEC 8802-3 link for the transmission of the samples in combination with IEC 61850-8-1. Main changes with respect to the first edition are: - addition of an optional link redundancy layer; - redefinition of "reserved" fields in link layer; - evolution of USVCB and MSVCB components; - evolution of encoding for the transmission of the sampled value buffer.
英文名称Communication networks and systems for power utility automation - Part 9-2: Specific communication service mapping (SCSM) - Sampled values over ISO/IEC 8802-3