select the requested signals (DOs) and link them to the client IEDs as receiver. When using
a dataset for MMS, the requested signals are DOs but when creating a dataset for GOOSE
messaging, DAs are used. The control services are not directly engineered. They are
included in the data objects, which handle both the command (control) and the response
(monitoring). When assigning the DOs in monitoring direction, the control is understood
by the clients.
The number of data objects and data attributes per DO is defined by the used LN type in
the IED. The content of logical node types and DO types are defined in the DTT. This also
means that the definitions in the DTT section have to be unique within an SCD file.
3.4
Tool concept
The IEC 61850-6 defines a number of roles for tools. In the Relion
®
series, PCM600 is
defined as the IED tool, and IET600 is defined as the system engineering tool.
The sections in SCL contain properties that are to be configured by these tools. There is
no relation between one section and one specific tool. The task of the IED tool is to
configure all properties for the IED, while the system tool has the task to define the place
of the IED in the system and its communication dependencies. For example, the plant
structure in PCM600 results in the subsystem section in SCL regarding the subsystem
structure down to the IED level. The PCM600 also configures the IED section as a result
of the IED configuration. In PCM600, the configuration properties for SCL are handled
automatically as a result of the configuration, except for the receiving of GOOSE
information that has a dependency with the system tool.
IEC 61850 engineering with PCM600, PCM600 IEC61850 Configuration tool and
IET600
PCM600:
•
When an IED is instantiated, its place in the plant structure creates the corresponding
structure in the substation section in SCL. The communication facilities is also
created in the communication section.
•
The functionality of the IED is configured by using ACT in PCM600. For each
function, the corresponding logical device and logical node(s) is created in the IED
section together with its type definition in data type template section
•
The above forms the IED capabilities from a communication perspective and will
then be included in the file exported from PCM600 as SCD, ICD or CID file
PCM600: IEC61850 Configuration tool
Section 3
1MRK 511 281-UUS A
Substation Configuration description Language (SCL)
30
650 series ANSI
Communication protocol manual
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