Section 2 Introduction To Iec 61850; Overview - ABB SAM600-IO Protocol Manual

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Section 2
2.1
Switchgear control unit SAM600-IO Version 2.2 IEC
Communication protocol manual
Introduction to IEC 61850

Overview

The general scope of the IEC 61850 protocol standard is designed to support the
communication of all functions being performed in the substation. Its' main goal is
interoperability; this is the ability for IEDs from one or different manufacturers to
exchange information and use the information for their own functions. Moreover,
the standard allows a free allocation of these functions and accepts any system
philosophy, from a distributed architecture (for example, decentralised substation
automation) to a centralised configuration (for example, RTU based).
The standard separates the functionality represented by the data model and the
related communication services from the communication implementation (stack).
The data model of the standard is an object-oriented one, grouping the data into the
smallest possible sets referring to the smallest possible functions to be
implemented independently. These smallest possible data groups or functions are
named logical nodes. The logical nodes and all data and attributes contained are
named according to a standardised semantic, which is mandatory.
This manual describes how the IEC 61850 standard is applied in the IEDs.
References and brief descriptions of the standard are also included. It is assumed
that the reader has basic knowledge of the IEC 61850 standard.
The following parts of the IEC 61850 standard are of importance as they relate to
this manual:
• Station Configuration description Language (SCL) is described in IEC
61850-6. The SCL is an XML based definition of how to describe the parts of
a substation. This part of the standard also includes the roles of different tools
as well as the engineering concepts.
• Communication profile (IEC 61850 stack) is described in IEC 61850-8-1. This
part of the standard includes a number of possible communication profiles, and
how the services defined in IEC 61850-7-2 are mapped to the communication
profile.
• Communication services are described in IEC 61850-7-2. This part deals
mainly with the communication facilities from client and server point of view.
It includes the different possibilities of communication functionality.
• Logical node data model. This is described in IEC 61850-7-3 and IEC
61850-7-4.
• Conformance tests and the basis for conformance documents are handled in
IEC 61850-10.
Section 2
Introduction to IEC 61850
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