Section 2
Introduction to IEC 61850
The IEC 61850 protocol standard for substation enables the integration of all
protection, control, measurement and monitoring functions by one common protocol.
It provides the means of high-speed substation applications, station wide interlocking
and other functions requiring intercommunication between IEDs. The well described
data modelling, the specified communication services for the most recent tasks in a
station makes the standard to a key element in modern substation systems.
This manual describes mainly how the IEC 61850 standard is applied in the products
of the 630 series IEDs. References and brief descriptions of the IEC 61850 standard
are also included. It is assumed that the reader has basic knowledge about the IEC
61850.
To understand the IEC 61850 standard and to be able to find the related information,
the following parts of the standard are of importance:
•
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.
To get information and an understanding about the implemented possibilities of IEC
61850 in the IED, the details are described in the IEC 61850 conformance documents.
•
MICS, Modeling Information Conformance Statement, contains the declaration
of the used logical node types.
•
PICS, Protocol Information Conformance Statement, contains the details and
what is supported regarding protocol facilities.
•
PIXIT, Protocol Extra Information, contains additional information on how the
IEC 61850 is implemented and used.
•
TICS, Tissue Information Conformance Statement, contains the supported
Tissues, which are handled in the Tissues process as defined by UCA, Utility
1MRS756793 E
Section 2
Introduction to IEC 61850
630 series
13
Communication Protocol Manual