Splitting a section example
If the
Power management rules # > Number of gensets connected > Maximum
is 2 before the split, then PMS will ensure
that there are no more than 2 gensets connected to
each
section during the split.
Power management rules when joining two sections
The PMS uses the least restrictive section's power management rules when joining two sections. The PMS does not try to anticipate
what the power management rules will be after sections are joined.
Joining a section example
Section 1 uses
Power management rules 7
, and Section 2 uses
Power management rules 8
.
Power management rules 7 >
Number of gensets connected > Maximum
is 2 and
Power management rules 8 > Number of gensets connected >
Maximum
is 3. There must therefore be a maximum of 3 gensets connected in total before the join.
Section power management rules example
Figure 7.5
Single-line diagram for the example
G
G
G
G
A
C
D
E
B
CustomLogic is configured as follows:
•
When bus tie breaker E is closed, CustomLogic assigns
Power management rules 1
to controller A.
◦
Since they are in the same section, the PMS applies
Power management rules 1
to controllers B, C and D too.
•
When bus tie breaker E is open, CustomLogic assigns
Power management rules 2
to controller A.
◦
Since it is in the same section, the PMS applies
Power management rules 2
to controller B too.
•
When bus tie breaker E is open, CustomLogic assigns
Power management rules 3
to controller C.
◦
Since it is in the same section, the PMS applies
Power management rules 3
to controller D too.
Based on this configuration
, when bus tie breaker E is closed:
•
All controllers (A to E) use
Power management rules 1
.
Figure 7.6
Split busbar operation for the example
G
G
G
G
A
C
D
E
B
Busbar A
Busbar B
When bus tie breaker E is open:
•
GENSET controllers A and B and BUS TIE breaker controller E use
Power management rules 2
.
DESIGNER'S HANDBOOK 4189340911K UK
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