Functional Test Protection Communication
Checking the Protection-Data Communication
Checking the Protection-Data Communication
If the devices are connected to one another via the protection interface and switched on, they contact each
other automatically. If, for example, device 1 recognizes device 2, the successful connection is indicated (see
next figure). Accordingly, each device signals to all devices that aProtection-data communication is available.
[scprotec, 1, en_US]
Figure 11-11
Connection Establishment in DIGSI 5
Proper communication of the devices among each other can be supervised during operation.
²
Check the connections for each protection interface in DIGSI 5.
If a connection is successfully established, the Status of topo recog. field shows the indication
valid
in DIGSI
5 (see Figure 11-11).
If 2 devices are parameterized incorrectly, the Status of topo recog. field shows the indication
invalid
(see
Figure 11-11).
In Figure 11-12 there is no protection-data communication between device 1 and device 2, that is, the protec-
tion interfaces 1 and 2 of device 1 do not receive data. The transmission of protection data is interrupted and
differential protection is ineffective. One reason for this can be a remote control with DIGSI via the protection
interface. In this case, the protection connection is interrupted and the connection is used exclusively for
DIGSI.
11.15
11.15.1
Functional Tests
11.15 Functional Test Protection Communication
SIPROTEC 5, Overcurrent Protection, Manual 1399
C53000-G5040-C017-8, Edition 07.2017
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