Function
2.1 ATS
SIPROTEC, 7VU681, User Manual
C53000-G1176-C368-1, Release Date 07.2012
35
Note
1.17868 >B1 MCB Closed will work whent it is configured to BI in DIGSI matrix.
2. 7VU681 supports Load-Shifting function for the standby power supply which supplies one more busbar when
there are 4 segmented busebars supplied by 3 transformers. The primary diagram is shown as followed. Load-
Shifting function can be switched
ON
or
OFF
by the parameter
0229 Busbar1 -> Busbar2 Load-Shifting.
If
0229 Busbar1 -> Busbar2 Load-Shifting
is set as
ON
and there is no neighbor ATS device for the third and
forth busbars, After ATS closes the CB3, load-shift function will be started and open CB6 connected to the third
busbar, and close CB7 connected the third and the forth busbar after CB6 is opened. If
0229 Busbar1 -
>Busbar2 Load-Shifting
is set as
ON
and there is a neighbor ATS device for the third and the forth busbars.
After ATS closes the CB3, Load-Shifting function will be started and just release the command of opening CB6
when it gets the Ready signal of the neighbor ATS device. The neighbor ATS device is responsible to transfer
the power supply between third busbar and fourth busbar.
3. If the parameter
0229 Busbar1 -> Busbar2 Load-Shifting
is set to
OFF
, the parameter
8911 Busbar1-
>Busbar2 load-shedding
is set to
ON
, The Load-Shedding logic will be started after CB3 is closed. Please
refer to chapter 2.1.6 for the details of Load-Shedding logic.
4. If the parameter
0229 Busbar1 -> Busbar2 Load-Shifting
is set to
ON
, the parameter
8911 Busbar1 ->
Busbar2 load-shedding
is set to
ON
, the Load-Shedding logic will be started after successful operation of
Load-shifting.
5. If Load-Shedding function is still needed when the Load-Shifting is failed, you can start the Load-Shedding
logic through the external BIs. Please refer to chapter 2.1.6 for the details of Load-Shedding logic started by
external BIs.
Figure 2-15
Primary Diagram of Load-Shifting
Содержание SIPROTEC 7VU681
Страница 8: ...Preface SIPROTEC 7VU681 User Manual C53000 G1176 C368 1 Release Date 07 2012 8 ...
Страница 12: ...Contents SIPROTEC 7VU681 User Manual C53000 G1176 C368 1 Release Date 07 2012 12 ...
Страница 100: ...Literature SIPROTEC 7VU683 User Manual C53000 G1176 C368 1 Release Date 07 2012 100 ...
Страница 110: ...Appendix A 4 Dimension SIPROTEC 7VU681 User Manual C53000 G1176 C368 1 Release Date 07 2012 110 ...
Страница 112: ...Index SIPROTEC 7VU681 User Manual C53000 G1176 C368 1 Release Date 07 2012 112 ...