这是一组IEC61850变电站通讯网络与系统协议，在ABB的发展历程和技术概述，对正在开发或应用IEC61850的人会有参考和启发作用。（5）-This is a group of IEC61850 substation communication network and system agreement, in the course of development of ABB and technical overview of the development or application of IEC61850 is that there the role of reference and inspiration. (5)