Unit Description and General Aims

Older (‘legacy’) substation automation protocols and hardware/software architectures provided basic functionality for power system automation, and were designed to accommodate the technical limitations ofthe technologies available at the time. However, in recent years there have been vast improvements in technology, especially on the networking side. This has opened the door for dramatic improvements in the approach to power system automation in substations. The latest developments in networking such as high-speed, deterministic, redundant Ethernet, as well as other technologies including TCP/IP, high-speed Wide Area Networks and high-performance embedded processors, are providing capabilities that could hardly be imagined when most legacy substation automation protocols were designed. The unit aims to cover important international standards(IEC 61850)for substation automation, which will contribute to students' understanding of the significant impact on how electric power systems are designed and built for the future. having a significant. The model driven approach of IEC 61850 is an innovative approach and requires a new way of thinking about substation automation. This will result in significant improvements in the costs and performance of electric power systems. Substation Automation (or Data Communications for Substation Automation), including the protocols such as DNP3, IEC 61850, and IEC 60870-5-101/103 as well as the use of LANs/WANs for real-time communication in power distribution systems (both inside substations and between them) will be discussed. IEC 61850 alone is very complex and is a ‘hot topic in the Power Industry today.