Tool Concept - ABB IEC 61850 Edition 2 Communication Protocol Manual

Section 3
Substation Configuration description Language (SCL)
3.4
28
• The LN LPHD is a special logical node per LD and contains data objects that
describe the status of the physical device (the IED)
• Each logical node represents a function and contains a number of data objects
(DO)
• Each DO includes a number of data attributes (DA)
The data objects represent information signals that may be routed to station level
IEDs or to other bay IEDs that are communicating via GOOSE. The signal
engineering task is to 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 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 is defined in the
DataTypeTemplates. This also means that the definitions in the DataTypeTemplates
section have to be unique within an SCD file.

Tool concept

The IEC 61850-6 defines a number of roles for tools. In the Relion
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 GOOSE data sets, which are generated automatically
only for RET670 when parallel control of tap changer is used.
IEC 61850 engineering with PCM600, PCM600 IEC 61850 Configuration tool
and/or 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 are 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) are created in
1MRK 511 393-UEN A
GUID-93477EC1-9BB4-4CCE-8603-0D910BDD661B v7
®
series,
670 series 2.2 IEC
Communication protocol manual