Course #1 Introduction to IEC 61850

This course introduces IEC 61850 in simple terms for entry-level students who are new to digital substations, protection and control systems, and utility communication networks. IEC stands for International Electrotechnical Commission, and IEC 61850 is a standard series called “Communication networks and systems for power utility automation”; IEC describes Part 1 as an introduction and overview for power utility automation systems, including communication between intelligent electronic devices in those systems. In plain language, IEC 61850 helps devices in an electrical power system describe information in a common way and exchange that information over a communication network instead of depending only on point-to-point hardwired signals.

The course uses one guiding idea: IEC 61850 is not just “a protocol.” It is a shared language for power-system devices, a way to name data, a way to exchange messages, and a way to describe the system configuration. This course describes IEC 61850 as a standard series that includes specifications and technical reports for power utility automation, including protocols, data models, and configuration aspects for substation automation and related utility applications. It explains that IEC 61850 uses a virtualized model with logical devices, logical nodes, common data classes, and communication services, allowing device behavior and data to be defined separately from the specific communication method.