6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 675 -
The SYNCHK_RY function consists of several over-voltage and under-voltage and
synchronizing relays (OV, UV, and SyncRys) integrated within the synchronization check
feature (SYNCHK). The SYNCHK function issues permissive signals to the DPSY functions;
hence, ensuring that the DPSY functions are only able to close the CB when the required
conditions for closure have been satisfied.
SYNCHK_Ry:
Function ID: 561001
OVr relay (59r) for running line
OVi relay (59i) for incoming line
UVr relay (27r) for running line
UVi relay (27i) for incoming line
SyncRy (ΔV)
SyncRy (Δθ)
SyncRy (Δf)
SyncRy (θ≈0)
SYNCHK; Function
ID: 560001
Verification of voltage
conditions and
synchronization between
networks
Permission signal
issued to DPSY
logics
DPSY function†
Issue CB closing
command
Figure Outline of SYNCHK function
†Note: The DPSY function is discussed separately. See Chapter
Control and monitoring
application: Double position controller with synchronizing-check.
‡Note: To simplify the description, only the SYNCHK1 (SYNCHK_Ry1) function is
discussed; however, the same description is applicable to the SYNCHK2
(SYNCHK_Ry2) function. The user should read the expression for SYNCHK1 as
SYNCHK2 unless a special explanation or instruction has been provided (e.g., the
user can reason by analogy that the feature in the OVr2 relay is identical to the
OVr1 relay).
4.6.1
Relays to check line-outage
The voltage condition for either line being out of service or being in service is verified using OV
and UV relays in the SYNCHK_Ry1 function.
Table 4.6-2 Settings in SYNCHK_Ry1
Setting Name
Description
Default
Range
OVR1
Checking Live-Running Voltage
51V
10 to 150 V
UVR1
Checking Dead-Running Voltage
13V
10 to 150 V
OVI1
Checking Live-Incoming Voltage
51V
10 to 150 V
UVI1
Checking Dead-Incoming Voltage
13V
10 to 150 V
(i)
Overvoltage-relay elements (OVr1, OVi1)
Two overvoltage-relay elements (OVr1 and OVi1) are provided to determine the voltage
presence between running and incoming lines. In Figure 4.6-1 the hatched area depicts the
Summary of Contents for GR 200 Series
Page 1047: ...6F2S1915 0 46 GRZ200 Soft 031 032 1026 Figure 8 3 4 Screen shot from GR TIEMS ...
Page 1354: ...6F2S1915 0 46 GRZ200 Soft 031 032 1333 Appendix 1 Signal list for common function ...
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Page 1480: ...6F2S1915 0 46 GRZ200 Soft 031 032 1459 Appendix 6 Ordering ...
Page 1497: ...6F2S1915 0 46 GRZ200 Soft 031 032 1476 Appendix 7 Technical data ...
Page 1518: ...6F2S1915 0 46 GRZ200 Soft 031 032 1497 Appendix 8 Manufacture setting ...
Page 1523: ...6F2S1915 0 46 GRZ200 Soft 031 032 1502 Appendix 10 CT requirement ...
Page 1531: ...6F2S1915 0 46 GRZ200 Soft 031 032 1510 Appendix 12 Engineering exercise ...
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