Benefits Of Iec 61850 - GE MiCOM P40 Agile Technical Manual

Chapter 22 - Communications
There are two editions of IEC 61850; IEC 61850 edition 1 and IEC 61850 edition 2. The edition which this product
supports depends on your exact model.
7.4.1

BENEFITS OF IEC 61850

The standard provides:
Standardised models for IEDs and other equipment within the substation
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● Standardised communication services (the methods used to access and exchange data)
Standardised formats for configuration files
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Peer-to-peer communication
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The standard adheres to the requirements laid out by the ISO OSI model and therefore provides complete vendor
interoperability and flexibility on the transmission types and protocols used. This includes mapping of data onto
Ethernet, which is becoming more and more widely used in substations, in favour of RS485. Using Ethernet in the
substation offers many advantages, most significantly including:
Ethernet allows high-speed data rates (currently 100 Mbps, rather than tens of kbps or less used by most
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serial protocols)
● Ethernet provides the possibility to have multiple clients
Ethernet is an open standard in every-day use
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There is a wide range of Ethernet-compatible products that may be used to supplement the LAN installation
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(hubs, bridges, switches)
7.4.2 IEC 61850 INTEROPERABILITY
A major benefit of IEC 61850 is interoperability. IEC 61850 standardizes the data model of substation IEDs, which
allows interoperability between products from multiple vendors.
An IEC 61850-compliant device may be interoperable, but this does not mean it is interchangeable. You cannot
simply replace a product from one vendor with that of another without reconfiguration. However the terminology
is pre-defined and anyone with prior knowledge of IEC 61850 should be able to integrate a new device very quickly
without having to map all of the new data. IEC 61850 brings improved substation communications and
interoperability to the end user, at a lower cost.
7.4.3 THE IEC 61850 DATA MODEL
The data model of any IEC 61850 IED can be viewed as a hierarchy of information, whose nomenclature and
categorization is defined and standardized in the IEC 61850 specification.
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