The international IEC 61850 standard defines a
The international IEC 61850 standard defines a
framework for substation
framework for substation
communications networks and systems. The standard consists of several parts
communications networks and systems. The standard consists of several parts
ranging from the requirements on substation automation systems to
ranging from the requirements on substation automation systems to
the details of a
the details of a
communication protocol.
communication protocol.
One major difference between the other communication protocols applied in
One major difference between the other communication protocols applied in
substation automation and IEC 61850 is that the latter is not only a communication
substation automation and IEC 61850 is that the latter is not only a communication
protocol, but a whole framework for s
protocol, but a whole framework for s
pecifying, engineering and operating
pecifying, engineering and operating
substation automation systems. The communication part covers the
substation automation systems. The communication part covers the
connection
connection
between the IEDs and the substation level, fas
between the IEDs and the substation level, fas
t peer-to-peer communication
t peer-to-peer communication
between the IEDs and communication to sens
between the IEDs and communication to sens
ors and actuators
ors and actuators
1
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management
management
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device models
device models
Requirements
Requirements
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communication in electrical substations related to
communication in electrical substations related to
IEDs
IEDs
Impact on engineering
Impact on engineering
7-1…
7-1…
7-4
7-4
Basic communication structure for substation and
Basic communication structure for substation and
feeder equipment (data model and services)
feeder equipment (data model and services)
Modelling and services
Modelling and services
8
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The IEC 61850 standard specifies an expandable data
The IEC 61850 standard specifies an expandable data
model and services for
model and services for
substation automation (standard parts 7-x). The standard does not
substation automation (standard parts 7-x). The standard does not
specify any
specify any
protection or control functions, but s
protection or control functions, but s
pecifies how the functions expose
pecifies how the functions expose
their
their
information to a communication network.
information to a communication network.
The standard supports free allocation of functions t
The standard supports free allocation of functions t
o devices. With efficient
o devices. With efficient
communication facilities, the functions can be located anywhere in the system, that
communication facilities, the functions can be located anywhere in the system, that
is, an interlocking function can reside in the IED or on the station level.
is, an interlocking function can reside in the IED or on the station level.
Additionally, the standard is open
Additionally, the standard is open
for different system philosophies, that is,
for different system philosophies, that is,
different integration levels and allocation of functions to different devices is
different integration levels and allocation of functions to different devices is
supported.
supported.
1MRS756475 D
1MRS756475 D
Section 2
Section 2
IEC 61850 overview
IEC 61850 overview
9
9
Engineering Guide
Engineering Guide
