See Also
The OPF Dialog, Common Options page displays general options associated with the OPF solution. The display contains the following fields:
Allows a choice of solving the LP using either a minimum cost or a minimum control change objective function.
OPF Reserves Options
These options are only available with the OPF Reserves add-on.
Include OPF Reserve Requirements
Check this box to include OPF reserve constraints in the OPF calculation.
Use a Single Control for Up/Down Regulation
Check this box to use a single bidirectional control for regulating reserve up or down. A unit will provide the same amount of regulating reserve up or down.
Disable All Phase Shifter Controls
Prevents phase shifters from attempting to control devices during the OPF solution.
Disable All Generator MW Controls
Prevents generators from shifting MW output during the OPF solution.
Disable All Load MW Controls
Prevents loads from shifting MW demand during the OPF solution.
Disable Area-to Area MW Transaction Controls
Prevents MW transactions between areas from being dispatched during the OPF solution.
Disable DC Transmission Line MW Controls
Prevents shifting of DC Transmission Line MW transfers during the OPF solution.
Disable D-FACTS Controls
Prevents adjusting D-FACTS devices during the OPF solution.
LP Options
Maximum Number of LP Iterations
Maximum number of allowable iterations for the LP portion of the LP OPF. How many iterations are required to obtain a solution depends, among other things, upon the number of breakpoints in the control cost models. Since each LP iteration can only move from one breakpoint to the next, the finer the model the more iterations required. However the LP is quite fast so a large number of iterations can be performed quite quickly. Default = 1000. Select Treat Maximum LP Iterations Solutions as Valid will treat the maximum number of iteration as a valid solution in the LP OPF.
Phase Shifter Cost ($ / Degree)
Specifies the assumed cost for moving phase shifting transformer taps away from their initial values. The purpose for this fictitious cost is approximate the cost of actually changing the angle of a phase shifting transformer, and to avoid large changes in phase shifter angles that have very little impact on the system. This field may be zero. Default = $ 0.10 / Degree.
Calculate Bus Marginal Cost of Reactive Power
When this option is checked, the OPF algorithm will also calculate the marginal cost of reactive power at each bus. Typically the result of interest from the OPF algorithm is the MW marginal cost of each bus (the LMP), but the MVAR marginal cost can be determined as well.
Save Full OPF Results in PWB File
When checked, Simulator will store the full set of results, including the LP matrix, in the PowerWorld Binary case file.
Do Detailed LP Logging
When checked, Simulator will write details on the LP algorithm solution during each pivot of the LP matrix. This is useful for debugging LP solution issues when running a LP OPF solution.
Start with Last Valid OPF Solution
When checked, Simulator will start the LP OPF solution process using the most recent OPF solution as the initial conditions.
Include only online devices in Injection Group calculation
When checked, the determination of the MW marginal costs for an injection group that are weighted by participation factors will only include those devices that are online. The MW marginal cost is associated with a bus, which means that it is possible for the bus to which a generator or load is attached to have a non-zero marginal cost even if the generator or load itself is open.
D-FACTS Cost ($/per unit X)
Specifies the assumed cost for adjusting the reactance of a D-FACTS device away from its initial value.