GE DMC490 Software Configuration Manual page 36

DMC490 Microgrid Controller Software Configuration Guide
Start Cost ($) Specify the cost in dollars to power up the co-generator. Include the
cost(s) that you think are important based on your experience with the
generation resource and the microgrid. The cost is in dollars; for other
currencies simply enter that value and be consistent in all fields
involving the currency.
Stop Cost ($) Specify the cost in dollars to power down the co-generator. The cost is
in dollars; for other currencies simply enter that value and be
consistent in all fields involving the currency.
Isochronous Specify if isochronous or droop (non-isoch) mode is to be used for the
Operation co-generators in each of the microgrid operation modes.
Mode1
Numbers 1 to 4 in this setting name refer to operation modes for the
microgrid. Depending on the type of isochronous machine and how
Isochronous
the reserve margins are provided, four different operation modes can
Operation
be considered for the microgrid.
Mode2
For example the following mode numbers can be used:
Isochronous
1.
Operation
2.
Mode3
3.
Isochronous
4.
Operation
For example, assume in a particular microgrid, one big co-
Mode4
generator can operate in isochronous mode. This corresponds to
Operation Mode 3; however, any of the four operation modes can
be assigned to a single co-generator in isochronous. If the
operator follows the suggested operation-mode assignment (that
is, Operation Mode 3 is single dispatchable/CHP in isochronous)
and Co-generator 1 is supposed to be the isochronous machine,
the following are set for this machine:
•
•
•
•
In this manner, if you select the third mode to be the active mode
for the microgrid, then Co-generator 1 can run in isochronous
mode by receiving the isochronous command from DMC490. For
the other microgrid operation modes, Co-generator 1 is in non-
isochronous mode (as set by zero values).
Electric The 'Soft' constraint means that the co-generator is allowed to violate
Constraint its minimum power generation level but at the cost of a penalty in the
Mode objective function. Having the possibility of going below the minimum
power (soft constraint) can positively affect the feasibility of the
microgrid optimization problem.
The 'Hard' constraint means that the co-generator is not allowed to
go below its minimum power generation level.
Use this setting in conjunction with Electric Power Penalty.
Electric Use this setting in conjunction with Electric Constraint Mode. This
Power setting puts a numerical value on the minimum power violation. When
Penalty the violation from minimum power is critical, set a high value here.
($/kWh)
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Dispatchable/CHP isochronous load sharing
Hydro in isochronous
Single dispatchable/CHP in isochronous
Grid in isochronous
Operation Mode 1 = Droop
Operation Mode 2 = Isoch
Operation Mode 3 = Droop
Operation Mode 4 = Droop
$0 to $10
$1,000,000
$0 to $10
$1,000,000
Isoch Droop
Droop
Hard Hard
Soft
$0 to 1000 $0 per
per kWh kWh