PLEXOS 6.207 Release Notes
1. Upgrade Compatibility
This version will automatically upgrade any previous Version 5 or Version 6 database. You may need to check the upgrade notes of earlier releases for any compatibility issues. Note that, once converted to 6.207 format, databases in this version may require some manual work to be retro-graded to earlier versions. In particular the new Generator Fixed Load Method property will not retro-grade automatically (you will need to restore the old Production attribute manually).
2. Changes
The Production attribute 'Fixed Load Method' is replaced by the Generator Fixed Load Method setting, which then allows this control to be set by object rather than global to the simulation. The default for this setting is changed from "Relax When Zero" to "Enforce Zero Values". Existing settings are automatically upgraded.
3. Features
- Commitment logic is now available for the Purchaser class with the introduction of the Min Load property, which is analogous to Generator Min Stable Level.
- Improvements have been made to the dynamic program unit commitment option (available via the Unit Commitment Optimality setting).
- The Cournot class has been enhanced. It now has reporting properties where the full detail of the Cournot solution can be output.
4. User Interface
N/A.
5. New Inputs
The following table lists all the new input properties available in this release. Please refer to the help for detailed information.
| Collection | Property | Relates To |
|---|---|---|
| Generator | Fixed Load Method | Replaces global setting on Production object. See above. |
| Generator | Pump Unit Commitment Non-anticipativity | Stochastic unit commitment for pumped storage. |
| Generator | Pump Unit Commitment Non-anticipativity Time | ... |
| Generator | Outage Pump Load | Control over pump load during an outage. |
| Generator Start Fuels | Transport Charge | Transport charge for start fuels. |
| Storage | Natural Inflow Incr | Increment to Storage Natural Inflow. |
| Storage | Natural Inflow Scalar | Multiplier on Storage Natural Inflow. |
| Purchaser | Min Load | Minimum load if any load is cleared. See above. |
| Region | Include in Uplift | Finer control over time periods in which uplift is a applied. |
| Zone | Maintenance Factor | Support for PASA Transmission Detail = "Zonal". |
| Zone | Max Maintenance | ... |
| Interface | Max Ramp | Ramp constraints for Interface |
| Interface | Ramp Penalty | Ramp penalty cost for Interface |
| Constraint Generator | Hours of Operation Coefficient | Allows definition of constraints on the number of hours of operation. |
6. New Outputs
The following new output properties are added:
| Generator Start Fuels | Offtake | Detailed reporting of start fuels. |
|---|---|---|
| Generator Start Fuels | Price | ... |
| Generator Start Fuels | Cost | ... |
| Generator StartFuels | Transport Cost | ... |
| Region | Generation-weighted Price | - |
| Region | DSP Bid Quantity | More detailed reporting of demand-sid participation (TODO: Link the help topic). |
| Region | DSP Bid Price | ... |
| Region | DSP Bid Cleared | ... |
| Region | Cleared DSP Bid Price | ... |
| Region | Cleared DSP Bid Cost | ... |
| Zone | Time-weighted Price | - |
| Zone | Load-weighted Price | - |
| Zone | Generation-weighted Price | - |
| Node | DSP Bid Quantity | - |
| Node | DSP Bid Price | ... |
| Node | DSP Bid Cleared | ... |
| DSP Bid Cost | Cleared DSP Bid Price | ... |
| Node | Cleared DSP Bid Cost | ... |
| Interface | Ramp | Ramp constraints on Interface |
| Interface | Ramp Cost | Ramp penalty on Interface |
| Cournot | Elasticity | Reporting of Cournot Solution |
| Cournot | Demand Intercept | ... |
| Cournot | Demand Slope | ... |
| Cournot | Perfect Competition Demand | ... |
| Cournot | Perfect Competition Production | ... |
| Cournot | Perfect Competition Net Import | ... |
| Cournot | Perfect Competition Price | ... |
| Cournot | Perfect Competition Producer Revenue | ... |
| Cournot | Perfect Competition Consumer Surplus | ... |
| Cournot | Perfect Competition Producer Surplus | ... |
| Cournot | Demand | ... |
| Cournot | Production | ... |
| Cournot | Net Import | ... |
| Cournot | Price | ... |
| Cournot | Producer Revenue | ... |
| Cournot | Consumer Surplus | ... |
| Cournot | Producer Surplus | ... |