Function Embedding in the Device
General
SIPROTEC 5 devices offer great flexibility in the handling of functions. Functions can be individually loaded
into the device. Additionally, it is possible to copy functions within a device or between devices. The necessary
integration of functions in the device is illustrated by the following example.
NOTE
The availability of certain settings and setting options depends on the device type and the functions avail-
able on the device!
EXAMPLE
A 1 1/2 circuit-breaker layout of the 7SA86 distance protection device serves as an example. The following
protection functions are required for implementation (simplified and reduced):
•
Distance protection (21)
•
Overcurrent protection, phases (51)
•
Circuit-breaker failure protection (50BF), for circuit breakers 1 and 2
•
Basic functionality (handling of tripping, etc.)
Several predefined function packages that are tailored to specific applications exist for each device family. A
predefined functional scope is called an application template. The existing application templates are offered
for selection automatically when you create a new device in DIGSI 5.
EXAMPLE
When creating the device in DIGSI 5, you must select the appropriate application template. In the example,
select the application template DIS overhead line, grounded systems, 1 1/2 circuit-breaker layout. This
application template covers the required functional scope. Selecting this application template determines the
preconfigured functional scope. This can be changed as necessary (see chapter 2.2 Adjustment of Application
Templates/Functional Scope).
Function Groups (FG)
Functions are arranged in function groups. This simplifies handling of functions (adding and copying). The
function groups are assigned to primary objects, such as a line, transformer, or circuit breaker.
The function groups bundle functions with regard to the following basic tasks:
•
Assignment of functions to current and/or voltage transformers (assignment of functions to the meas-
uring points and thus to the protected object)
•
Exchange of information between function groups
When a function is copied into a function group, it automatically works with the measuring points assigned to
the function group. Their output signals are also automatically included in the configured interfaces of the
function group.
The number and type of function groups differ in the respective application templates, depending on the type
of the device and application. You can add, copy, or even delete function groups for a specific application. You
can also adapt the functional scope within a function group according to the use case. You can find detailed
information on this in the DIGSI 5 Online help.
2.1
Basic Structure of the Function
2.1 Function Embedding in the Device
44 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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