| Name | Units | Default Value | Validation Rule | Description |
|---|
| Allow Dump Energy | Yes/No | -1 | In (0,-1) | Model Dump Energy in OPF |
| Allow Unserved Energy | Yes/No | -1 | In (0,-1) | Model Unserved Energy in OPF |
| Bound Node Phase Angles | Yes/No | 0 | In (0,-1) | If the Node [Phase Angle] values are subject to bounds in absolute value. |
| Cache Transmission Matrices | Yes/No | 0 | In (0,-1) | Cache the transmission matrices to disk for future use. |
| Calculate Node LPF from Load | - | 0 | In (0,1) | Automatically calculate Node LPF from input Load property |
| Constraint Limit Penalty | $/MWh | -1 | | Penalty for exceeding line and transformer limits. |
| Constraint Voltage Threshold | kV | 0 | ≥0 | Voltage level at which thermal limits are modelled. |
| Constraints Enabled | Yes/No | -1 | In (0,-1) | If transmission line constraints are enabled. |
| Contingency Limit Penalty | $/MWh | -1 | | Penalty for exceeding contingency flow limits. |
| Contingency Monitoring Threshold | % | 100 | Between 0 And 100 | Monitor only this percentage of most affected Line/Transformer/Interface flows. |
| Convergence Report Level | - | 1 | In (0,1,2) | Level of screen reporting during transmission convergence iterations (none, normal, verbose) |
| Detail | - | 1 | In (0,1,2) | Level of detail used in transmission modeling |
| Detect Non-physical Losses | Yes/No | 0 | In (0,-1) | If non-physical losses should be detected (in the piecewise linear loss model) and removed via mixed-integer programming |
| Energy Balance Violation Variables | Yes/No | 0 | In (0,-1) | Include violation variables on the transmission system energy balance equations |
| Enforce Limits On Lines In Interfaces | Yes/No | 0 | In (0,-1) | If lines and transformers in interfaces should have their limits enforced regardless of voltage |
| Enforce N-1 Contingencies | Yes/No | 0 | In (0,-1) | If N-1 contingencies should be automatically enforced. |
| Filter Limits | Yes/No | 0 | In (0,-1) | If transmission limits are filtered using extreme flows from MT Schedule |
| Flow PTDF Threshold | - | 0.01 | ≥0 | Minimum absolute value of PTDF as coefficient in transmission flow constraints. |
| Formulate Upfront | Yes/No | 0 | In (0,-1) | If transmission constraints should all be formulated upfront rather than checked iteratively. |
| Interface Constraints Enabled | Yes/No | -1 | In (0,-1) | If interface constraints are enabled. |
| Interface Limit Penalty | $/MWh | -1 | | Penalty for exceeding interface flow limits. |
| Internal VoLL | $ | 100000 | Between 0 And 1E+9 | Value of Lost Load used internally |
| Interruption Sharing | Yes/No | 0 | In (0,-1) | If region interruption sharing is activated. |
| Limit Bootstrap Initial Threshold | - | 2 | ≥0 | Initial value of [Limit Threshold] during transmission constraint bootstrap phase. |
| Limit Bootstrap Threshold Decrement | - | 0.25 | Between 0 And 1 | [Limit Threshold] decrement used for each iteration of transmission bootstrap phase. |
| Limit Threshold | - | 0.95 | Between 0 And 1 | Line, Transformer, or Interface flow loading threshold above which limits are added. |
| LODF Threshold | - | 0.03 | ≥0 | Minimum absolute value of LODF to be used in contingency flow constraints. |
| Loss Method | - | 0 | In (0,1,3,4,5) | Formulation method used to model transmission losses. |
| Loss Tolerance | - | 1E-05 | ≥0 | Relative gap between real and modelled losses. |
| Loss Voltage Threshold | kV | 0 | ≥0 | Voltage level at which losses are modelled. |
| Losses Enabled | Yes/No | 0 | In (0,-1) | If transmission losses are enabled. |
| Max Absolute Phase Angle | rad | 2 | Between 0 And 6 | Maximum absolute value allowed for any Node [Phase Angle]. |
| Max Embedded Loss Iterations | - | 2 | ≥0 | Maximum number of iterations for removing embedded losses from load. |
| Max Limit Iterations | - | 1000 | ≥0 | Maximum number of iterations during any one call to enforce transmission limits. |
| Max Loss Absolute Error | - | 0 | ≥0 | Maximum allowed absolute error in the piecewise linear loss function. |
| Max Loss Iterations | - | 50 | ≥1 | Maximum number of iterations for converging the losses. |
| Max Loss Relative Error | - | 0 | ≥0 | Maximum allowed relative error in the piecewise linear loss function. |
| Max Loss Tranches | - | 100 | ≥1 | Maximum number of tranches in piecewise linear line loss function. |
| MVA Base | - | 100 | ≥0 | MVA base for AC line parameters. |
| N-1 Contingency Voltage Threshold | kV | 0 | ≥0 | Voltage level at which N-1 contingencies are automatically enforced. |
| OPF Method | - | 0 | In (0,1) | Method for solving optimal power flow. |
| PTDF Method | - | 0 | In (0,1,2,3,4) | Method for computation of shift factors |
| Reactance Cut-off | - | 0 | | Smallest allowable reactance before line is removed during the OPF. |
| Rental Method | - | 0 | In (0,1) | Method used to calculate transmission rentals |
| Report All Interregional Flows | Yes/No | -1 | In (0,-1) | If line flows between regions should be reported regardless of kV. |
| Report All Interzonal Flows | Yes/No | -1 | In (0,-1) | If line flows between zones should be reported regardless of kV. |
| Report Enabled | Yes/No | -1 | In (0,-1) | If transmission reporting is enabled. |
| Report Injection and Load Nodes | Yes/No | 0 | In (0,-1) | If all injection and load buses (nodes) are reported on (regardless of voltage) |
| Report Lines In Interfaces | Yes/No | 0 | In (0,-1) | If all flows on lines selected interfaces are reported |
| Report Voltage Threshold | kV | 0 | ≥0 | Voltage level at which transmission reporting begins. |
| SCUC Constraint Voltage Threshold | kV | 0 | ≥0 | Voltage level at which SCUC line thermal limits are modelled. |
| SCUC Enabled | Yes/No | 0 | In (0,-1) | If security constrained unit commitment (SCUC) is enabled |
| SCUC Interface Constraints Enabled | Yes/No | 0 | In (0,-1) | If enabled interface constraints are monitored in SCUC. |
| USE Threshold | % | 100 | Between 0 And 100 | Formulates the [Unserved Energy] variables on the top x% nodes (highest load). |
| Wheeling PTDF Threshold | - | 0.05 | ≥0 | Minimum absolute value of PTDF as coefficient in wheeling definitions. |
| Zero Limit Treatment | - | 0 | In (0,1) | Treatment of AC elements with zero limits |