An electrical connection point (AC or DC) to a piece of conducting equipment. Terminals are
connected at physical connection points called connectivity nodes.
UTC time with the epoch of midnight (00:00:00) of 1970-01-01. The presentation is defined in the
SCSMs.The NULL time stamp has all fields set to 0 (zero).The relation between a timestamp value, the
synchronization of an internal time with an external time source (for example, UTC time), and other
information related to time model are available as requirements in Clause 21. ControlTimestamp is a
timestamp for future time point so it does not contain the time quality as the one contained in the
normal Timestamp data type.
The value of a control command which could either be a setpoint or a control schedule in curve.
The attribute modBlk is used to tag out a device. if it is TRUE, any setpoints and control schedule
in a message payload should be ignored. It should also be presented in a status profile. Any
modBlk value change (i.e. TRUE to FALSE and vice versa) should trigger an event.
Intelligent Electronic Device is a device with a microprocessor that can contain one or more
(IEC61850) SERVERs. In the context of IEC61850, IED could be an electronic protection device, a
controller or even a laptop/desktop computer. Modelling note: This class is not explicitly
defined in IEC61850-7-2 (but only in SCL: IEC61850-6). However, it is an important concept that
deserves its place in the meta-model. When the meta-model gets instantiated from a direct link to an
IED with an IEC61850 SERVER, we typically create an instance of the meta-model IED per connection.
When the meta-model gets instantiated from an SCL file, there is the full description of IED and its
functions.
Intelligent Electronic Device is a device with a microprocessor that can contain one or more
(IEC61850) SERVERs. In the context of IEC61850, IED could be an electronic protection device, a
controller or even a laptop/desktop computer. Modelling note: This class is not explicitly
defined in IEC61850-7-2 (but only in SCL: IEC61850-6). However, it is an important concept that
deserves its place in the meta-model. When the meta-model gets instantiated from a direct link to an
IED with an IEC61850 SERVER, we typically create an instance of the meta-model IED per connection.
When the meta-model gets instantiated from an SCL file, there is the full description of IED and its
functions.
The current state for a measurement. A state value is an instance of a measurement from a
specific source. Measurements can be associated with many state values, each representing a
different source for the measurement.
This is a root class similar to IdentifiedObject but without the mRID. The reason to separate
the two classes is because the mRID may need to be defined as a separate key field for technology
such as the DDS implementation.
Quality contains data that describe the quality of the data from the server. Quality of the data
is also related to the mode of a logical node. Further details can be found in IEC 61850-7-4. The
different quality attributes are not independent.The default value shall be applied if the
functionality of the related attribute is not supported. The mapping may specify to exclude the
attribute from the message if it is not supported or if the default value applies.
UTC time with the epoch of midnight (00:00:00) of 1970-01-01. The presentation is defined in the
SCSMs.The NULL time stamp has all fields set to 0 (zero).The relation between a timestamp value, the
synchronization of an internal time with an external time source (for example, UTC time), and other
information related to time model are available as requirements in Clause 21.
Dynamic test status (see IEC61850-7-2 section 20.2.1 Direct control with normal security, state
machine diagram) A simplified state machine diagram (from Herb F.) is provided.
Enumeration of phase identifiers. Allows designation of phases for both transmission and
distribution equipment, circuits and loads. Residential and small commercial loads are often served
from single-phase, or split-phase, secondary circuits. For example of s12N, phases 1 and 2 refer to
hot wires that are 180 degrees out of phase, while N refers to the neutral wire. Through single
phase transformer connections, these secondary circuits may be served from one or two of the primary
phases A, B, and C. For three-phase loads, use the A, B, C phase codes instead of s12N.
(default=process) Defines the source of a value. NOTE 1 Substitution may be done locally or via
the communication services. In the second case, specific attributes with a FC=SV are used. NOTE 2
There are various means to clear a substitution. As an example, a substitution that was done
following an invalid condition may be cleared automatically if the invalid condition is cleared.
However, this is a local issue and therefore