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Integration of Iot technologies into the Smart GridBog'liq sensors-22-02475-v23. IEC 61850 Data Model
IEC 61850 is the leading standard for substation automation [15,16]. It is intended to
structure the intelligence of protection, control, monitoring, and automation functions.
The standard fulfils automation architecture requirements for utility subsystems, enabling
communication among multi-vendor equipment.
IEC 61850 defines an object-oriented modeling of process data required for power
system automation. The IEC 61850 data model has been primarily defined for the ex-
change of information within substations by the document IEC 61850-7-4 [15]. The IEC
61850 data model has been extended for other domains, including distributed energy re-
sources (DERs) by IEC 61850-7-420 [15].
Figure 1 shows the main elements of the IEC 61850 data model. The top parent class
is the intelligent electronic device (IED), which is hosted by physical device, i.e., the con-
troller part of the device.
Figure 1.
IEC 61850 Data Model.
The IED consists of one or more Logical Devices (LDs), i.e., virtual representations of
devices intended for supervision, protection, or control of automated systems. LDs are
created by combining several Logical Nodes (LNs), which represent various device func-
tionality interfaces. Data Objects (DOs) are representations of the common information of
Logical Nodes. DOs are categorized to common data classes (CDCs) from IEC 61850-7-3
or IEC 61850-7-2 [15]. Each CDC describes the type and structure of the data object within
the LN. A Data Object belongs to the Data Object Type; Figure 2 gives the details of the
hierarchical structure of the Data Object Type. It may contain Data Attributes and a Struc-
tured Data Object (SDO), belonging to the Data Attribute Type and to the Structured Data
Object Type, respectively. Like the Data Object, Structured Data Objects are also defined
by Data Object Types, as shown by Figure 2.
Figure 1.
IEC 61850 Data Model.
The IED consists of one or more Logical Devices (LDs), i.e., virtual representations
of devices intended for supervision, protection, or control of automated systems. LDs
are created by combining several Logical Nodes (LNs), which represent various device
functionality interfaces. Data Objects (DOs) are representations of the common information
of Logical Nodes. DOs are categorized to common data classes (CDCs) from IEC 61850-
7-3 or IEC 61850-7-2 [
15
]. Each CDC describes the type and structure of the data object
within the LN. A Data Object belongs to the Data Object Type; Figure
2
gives the details of
the hierarchical structure of the Data Object Type. It may contain Data Attributes and a
Structured Data Object (SDO), belonging to the Data Attribute Type and to the Structured
Data Object Type, respectively. Like the Data Object, Structured Data Objects are also
defined by Data Object Types, as shown by Figure
2
.
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