Functions
2.2 Protection Data Interfaces and Protection Data Topology
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
86
Table 2-3 Parameters of the protection data interface
1)
Average value (adjust if necessary)
2)
If the maximum possible transmission time difference in address 4506 or 4606 is parameterised, address
4515 or 4615 can be set to NO.
If GPS synchronisation is used (order option), the preset value for the maximum transmission time difference
is only effective with certain restrictions. Address 4511 PI1 SYNCMODE defines the precondition for the acti-
vation of the differential protection after re-establishing the communication connection (establishing or re-es-
tablishing after a communication failure).
PI1 SYNCMODE = GPS SYNC OFF means that no GPS synchronisation is available at this protection data in-
terface. This makes sense if no runtime differences are expected (e.g. fibre optic connection). The value pa-
rameterized at address 4506 PROT 1 UNSYM. is considered by the differential protection when calculating the
restraint current.
PI1 SYNCMODE = TEL and GPS means that the differential protection is only released if the communication
line has been synchronized via GPS (both stations must be able to receive GPS signals) or if symmetrical trans-
mission times are signalled via an external operation (binary input). If the operator initiates the synchronisation,
the differential protection uses the value set at address 4506 PROT 1 UNSYM. until the transmission time dif-
ference has been calculated by the GPS synchronisation.
PI1 SYNCMODE = TEL or GPS means that the differential protection will be enabled immediately once the
connection has been re-established (data telegrams are received). The differential protection works with the
value paramterized at address 4506 PROT 1 UNSYM. until the synchronisation has been completed. As soon
as both stations can receive GPS signals and the communication connection has been synchronized via GPS,
the differential protection works with increased sensitivity.
In PI1 SYNCMODE TEL or GPS or TEL and GPS, the transmission time can be measured separately for
transmit and receive direction. If the measured transmission time difference exceeds the value parameterized
at address 4506 PROT 1 UNSYM., the message 3250 „PI 1 PD unsym.“ will be output.
Communication medium
Communication
Converter
Supported
Interface
Protection data interface parameters
4502
CONNEC. 1 OVER
4506
PROT 1 UNSYM.
4515 PI1
BLOCK UNSYM
Direct FO
(no converter)
Direct FO F.optic direct 0.0 ms NO
Communication network
/communication converter
KU-XG (7XV5662–0AA00)
G0.703 - 64 kBit/s
X.21 - 64 kBit/s
X.21 - 128 kBit/s
X.21 - 512 kBit/s
Com conv 64 kBit/s
Com conv 64 kBit/s
Com conv 128 kBit/s
Com conv 512 kBit/s
0.250 ms to 0.6 ms
1)
YES
2)
Communication network /
communication
converter KU-KU
(7XV5662–0AC00)
Pilot wire
twisted and
shielded
Com conv 128 kBit/s 0.125 ms NO
Communication network /
communication converter
KU-2M (7XV5662–0AD00)
G703 - T1
(1544 MBit/s)
G703 - E1
(2048 MBit/s)
Com conv 512 kBit/s 0.250 ms to 0.6 ms
1)
YES
2)
Communication network
IEEE C37.94, FO30
module
IEEE C37.94
1, 2, 4, 8 time slots
C37.94 1 slot
C37.94 2 slots
C37.94 4 slots
C37.94 8 slots
0.250 ms to 0.6 ms
1)
YES
2)
Direct FO-FO converter
(7XV5461–0Bx00)
Direct FO F.optic direct 0.0 ms NO
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