GE DMC490 Software Configuration Manual page 27

Constraint Soft constraint means that the storage device is allowed to
violate its minimum capacity State Of Charge Minimum but at
Mode
the cost of a penalty in the objective function. Having the
possibility of going below the minimum capacity (soft
constraint) can positively affect the feasibility of the microgrid
optimization problem but can also result in charge/discharge
cycling.
Hard constraint means that the storage is not allowed to go
below its minimum capacity (State Of Charge Minimum).
Use this setting in conjunction with State Of Charge Penalty,
State Of Charge Minimum Incentive and State Of Charge
Penalty.
Charging Cost This setting is the cost to charge the storage device in dollars
($/kWh) per kWh. Determine the cost based on your knowledge of the
microgrid or initial simulation studies. Including such costs
helps to prevent simultaneous charging and discharging and
helps to limit charge/discharge cycling. The cost is in dollars;
for other currencies simply enter that value and be consistent
in all fields involving the currency.
Discharging This setting is the cost to discharge power from the storage
Cost ($/kWh) unit in dollars per kWh. Determine the cost based on your
knowledge of the microgrid or initial simulation studies.
Including such costs helps to prevent simultaneous charging
and discharging and helps to limit charge/discharge cycling.
The cost is in dollars; for other currencies simply enter that
value and be consistent in all fields involving the currency.
Charging This setting is the financial incentive to charge storage, in
Incentive dollars per kWh. In some jurisdictions, utilities are required to
($/kWh) store a percent of energy and incentives can be available for
such a program.
The incentive can be used to set this parameter for grid-
connected microgrid configurations. In the absence of such an
incentive program, some simulation studies can be needed to
fine-tune this setting given the requirement to prevent
simultaneous charging and discharging and the need to limit
storage cycling.
The cost is in dollars; for other currencies simply enter that
value and be consistent in all fields involving the currency.
Discharging This setting is the financial incentive to discharge storage, in
Incentive dollars per kWh. In the absence of incentive programs for grid-
($/kWh) connected microgrids, some simulation studies can be needed
to fine-tune this setting given the requirement to prevent
simultaneous charging and discharging and the need to limit
storage cycling.
The cost is in dollars; for other currencies simply enter that
value and be consistent in all fields involving the currency.
State Of Charge This setting promotes discharging and lower values of SOC.
Penalty Both State Of Charge Penalty and State Of Charge Incentive
($/kWh2) settings are provided to allow you more freedom to configure
the system based on your operational knowledge. The cost is
in dollars; for other currencies simply enter that value and be
consistent in all fields involving the currency.
DMC490 Configuration
Hard Hard
Soft
0 to 1,000 10 $/kWh
$/kWh
0 to 1,000 5 $/kWh
$/kWh
0 to 1,000 0 $/kWh
$/kWh
0 to 1,000
0 $/kWh
$/kWh
0 to 1,000 0 $/kWh2
$/kWh2
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