Benefits Of Iec 61850; Iec 61850 Interoperability; The Iec 61850 Data Model - GE MiCOM P40 Technical Manual

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BENEFITS OF IEC 61850

The standard provides:

Standardised models for IEDs and other equipment within the substation

Standardised communication services (the methods used to access and exchange data)

Standardised formats for configuration files

Peer-to-peer communication

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

serial protocols)

Ethernet provides the possibility to have multiple clients

Ethernet is an open standard in every-day use

There is a wide range of Ethernet-compatible products that may be used to supplement the LAN installation

(hubs, bridges, switches)

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.

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.

P446SV-TM-EN-1

Chapter 21 - Communications