The protection IED is fully modelled according to the IEC 61850 standard. The data model can include up to four logical devices where different logical nodes representing protection and control functionality are located. Depending of the selected functionality in the protection IED, different configurations have different set of logical devices and logical nodes. Data models also include full modelling and functionality of setting, setting groups and configuration according to the IEC 61850 concept.
- Control logical device, CTRL
- Disturbance recorder logical device, DR
- Protection logical device, LD0
All generic functionality, such as modelling of physical inputs and outputs as well as the alarming LED functionality, resides under logical device LD0. A full description of the protection IED's data model is available in the parameter list.
In the IEC 61850 standard, communication services are configured through a number of data structures including data sets, report control blocks, GOOSE control blocks and setting group control blocks. As these data structures pertain to the entire logical device, the standard indicates that they are to be modeled under LLN0, which is a special logical node that describes the common functionality of the logical device. All these data structures are located in logical device LD0 logical node LLN0.
The full data model can be exported from PCM600 in the form of a SCL file, which is defined in part 6 of the standard.