The Application-View Model of the International Standard IEC 61850

The introduction of IEC 61850 as the de facto SA standard for the communication between devices in a substation and the related system requirements has made it possible and justifiable to integrate station Intelligent Electronic Devices (IEDs) on a high-speed peer-to-peer communication network (Ethernet) through standardization. IEC 61850 presents a set of standard object-oriented (OO) data models to describe the processes to be implemented and controlled in a substation and a set of service models for the interactions between devices in a substation and the transfer of all sorts of IED data. IEC 61850 proposes the concept of standardizing IED data using data objects referred to as logical nodes. This makes it possible to achieve the ldquoplug and playrdquo capability so that information and commands can be shared on a single network independent from any implementation. In this paper, the authors describe the standard's application-view model and present the use of OO methodology and techniques for the implementation of the Logical Node (LN) application-view data model of the standard. The target audience for this paper includes power system protection and automation engineers and technicians as well as research personnel who have at least a basic understanding of the IEC 61850 international standard and other technology mechanisms addressed in this paper.