Main 8200 Release

Important Changes
Upgrade Compatibility
General Changes
1. Solver updates
Major Features: Release 8.2 R00 (Beta) - Released on 4th December 2019
Major Features: Release 8.2 R00 (Beta) - Released on 11th March 2020
New Attributes
New Input Properties
New Reporting Properties
Additions for 8.2 R02
Release 8.2 R04

Released: 4th December 2019
Previous Version: 8.1
Next Version: 8.3

It is strongly advised that the following changes be reviewed:

The default value of Transmission Flow PTDF Threshold has now been changed. The value is now 0.01, while the previous default value was 0. Please note that the old default value of 0 is not migrated during an upgrade of a database value, i.e. the new value becomes 0.01.
The default value of Transmission Cache Transmission Matrices has been changed to False. Please note that this setting is not migrated during the upgrade, so you must explicitly set it on any upgraded model, if the matrices are to be cached. This setting should be disabled for any simulation run through the PLEXOS Connect environment, as this will have no benefit and will slow the simulation down.
Xpress-MP has been upgraded, which requires a new license. This is only applicable to those customers who license Xpress-MP directly from FICO.
Deprecated MDB Support - The support for MDB reading/writing used old technology known as JET, which does not have native x64 bit support. Therefore, this functionality has now been deprecated. However, support for MDB writing is still available, by using the DatasetToSQL and post simulation features of PLEXOS. The following steps outline the process that is required to configure the "auto-generation" of an Access Database (.accdb), at the end of the simulation.

Download the DatasetToSQL tool from Energy Exemplar Client Portal. Please download the x86 (32-bit) version and ensure you have installed the 32-bit version of the Microsoft Access Database Engine.
Extract and save the DataSetToSQL tool to a folder, such as "C:\DataSetToSQLx86" (Note: you would need change path of the DatasetToSQL tool in the following "Post-simulation.bat" if using a different folder).
Create the "Post-simulation.bat" file within the same directory as the PLEXOS database to be executed. This BAT file is generic and can be used by placing it into any input database folder. See Automation article for details.
Launch PLEXOS GUI.
Open the database to be executed.
Ensure the Report settings has the Compressed XML (.zip) option enabled.
Execute the simulation. The Access file will be generated at the end of the simulation.

This version will automatically upgrade any previous Version 5-8 database. You may need to check the upgrade notes of earlier releases for any compatibility issues.

If you experience any problems during upgrade contact Energy Exemplar Support.

If your simulations run differently or slower in this version, also seek support and we will assist with the upgrade process.

The following are the changes to existing functionality between this version and 8.1:

Upgraded all assemblies to use the latest .NET version (4.7.2).
Solver upgrade may cause different allocation of outage patterns and solution paths, especially with regards to constraint decomposition. This of course will then flow through to ST schedule and impact that simulation phase.
Internally all data series reported are stored in the solution zip file (in tables called t_data_X, where X is the period enum id). However, many of these data series can be repeated for various objects. Therefore minor changes were made to remove duplicated series from the solution file. This is purely an internal change and has no impact to the solution structure or API's.

The following solvers were updated as part of this updated release.

Solver	Version	Release Notes
FICO Xpress	34.1.5.0
GLPK	4.65
SCIP	6.02

Updated solvers to the latest version (at the time of development). Please see above.

This is a major new feature which can improve run-time significantly in the ST Schedule phase. This option allows you to control how the steps of the ST Schedule (chronological horizon) are linked together and how they are solved. For more information on this feature please visit the Step Link Mode help page.

The Weather Station class was added so that users can define weather and wind speed data which will affect Gas Demand. Input properties include Temperature, Heating Degree Days, and Wind Speed.

A weather station is linked to a gas demand through a gas node membership. To use weather data when calculating demand, update the Demand Type property in the linked gas demand. Additional properties must be specified in the linked gas demand object to use weather and wind data.

To calculate demand, we have a piecewise demand function.

When Gas Demand Demand Type is Input, the demand function is calculated as normal without weather data.

When Demand Type is Temperature ( or Heating Degree Days) the following formula is used.

Demand = Customer Count * (Usage Factor Base + (Usage Factor Heat * Temperature) + (Weather Data Factor * Wind))

Assume the weather station temperature is 55 and the following are the required demand inputs.

Property	Value	Units	Band
Demand	-	MMBTu	1
Demand Type	Temperature	-	1
Customer Count	5	-	1
Usage Factor Base	1	-	1
Usage Factor Heat	2	-	1
Usage Factor Heat	3	-	2
Usage Factor Heat	4	-	3
Usage Factor Heat Point	20	-	1
Usage Factor Heat Point	40	-	2
Usage Factor Heat Point	80	-	3

A temperature value of 55 falls in the third Usage Factor Heat Point band and the temperature will be multiplied by the corresponding Usage Factor Heat value in band three. This results in the following demand calculation,

Demand = 5*(1 + (4*55))
Demand = 1105 MMBtu

Suppose wind data is added to the weather station such that wind speed is 10 and the following demand properties are also specified.

Property	Value	Units	Band
Weather Data Factor	2	-	1
Weather Data Factor	4	-	2
Weather Data Variable	5	-	1
Weather Data Variable	20	-	2

A wind speed of 10 falls in the second Weather Data Variable band and the wind speed will be multiplied by the corresponding Weather Data Factor value in the second band. The demand function will be as follows,

Demand = 5*(1 + (4*55) +(4*10))
Demand = 1305 MMBtu

Significant performance improvements have been made to the importer, which improves all supported formats (e.g. XLS, PSSe, etc.).

This aim of this new feature is to reduce the size of the network by grouping equivalent injection points. The clustering occurs on the injection points until this number of equivalent injection points (nodes) remain. The method used to cluster injection points is a statistical reduction based on the likeness of their PTDF vectors similar to the method used to reduced statistical samples. This feature can be activated through the following Region properties:

Previously, Base Gas Contracts renominated on a calendar month basis (subject to Min Days between Renomination and Max Renomination inputs). The new input Renomination Start Period can be used to override the default renomination window with a user-defined window.

Gas Contract Renomination Start Period is useful for defining seasonal renomination windows using time-slices. The following setup allows base contract C1 to renominate on a quarterly basis every year.

Contract Name	Property	Value	Timeslice
C1	Renomination Start Period	Is not a Start Period
C1	Renomination Start Period	Is a Start Period	M4, D1
C1	Renomination Start Period	Is a Start Period	M7, D1
C1	Renomination Start Period	Is a Start Period	M10, D1

New input properties Withdrawal Ratchet, Withdrawal Rate Scalar, and Withdrawal Volume Factor provide the capability to reduce the amount withdrawn from a gas field as the gas field inventory is reduced. This functionality was implemented to capture the decline of the gas field through time.

The Gas Demand class now includes a Demand Type property. This property was added to allow the new Weather Station class to affect demand. Demand Type accepts three values; Input, Temperature, and Heating Degree Days. The resulting demand resolution will be per interval or as defined in Gas Demand Resolution.

New output properties were added to enhance the reporting in Gas Zones. Users can now see forward, backward and net flows and additional cost reporting including the Weighted Average Cost of gas. Details on new properties can be found on the Gas Zone property reference page.

In the past important information from the raw data files are omitted, e.g. IDs, as these were classed as being redundant. While this information is not used in the simulation itself, it is important to retain this. Therefore, the custom columns feature has been extended to store this information. During the import of any raw file, this information is automatically stored, but by default is not visible to the user. However, these fields can be made visible through the custom columns page. For example:

Figure 1: Meta Fields

Support has been added so that a URL address can be used for the Data File Filename property. The file will be downloaded and held in memory until it has been fully processed. This also supports files stored in BLOB storage (e.g. Azure BLOB), but a full URL including the SAS code must be specified.

The Transmission Filter Limits feature is able to extract important information from MT Schedule phase to determine which limits are redundant. These limits are then removed ready for the ST Schedule phase. This of course reduces the number of constraints required. Please review the Transmission Filter Limits help page for more information.

A new section in the user interface for Meta Fields adds an optional set of object data fields to the object grid. These can be selected in the Custom Columns tab of the Database Configuration window.

In previous versions of PLEXOS, the default view of the data grid displayed only System Level data, and Membership data had to be viewed by selecting the appropriate Collection in the Property Tree. The default view will now show data for all Collections.

The Generator.Emissions membership now includes the Fuel Production Rate property. Units are the same as the Production Rate on the Fuel.Emissions membership (lb/MMBtu for Imperial). It is only used for a generator when the Generator.Emissions Production Rate is not specified. In that case, it applies for all fuels for a generator for a specific emission and acts as an adder to the Fuel.Emissions Production Rate input. The Generator.Emissions Removal Rate will be applied to this new parameter, and if a fuel is burned on startup, this new parameter will apply to the fuel and incur emissions.

The new class, Gas Capacity Release Offer, applies to pipelines and storages. It is a mechanism by which a utility can earn revenue on extra reserved capacity when capacity utilization is low. Capacity release optimization balances revenue obtained from releasing the capacity and ability to serve demand. For storages, withdrawal/injection capability will be affected if you release storage capacity. A given capacity release object can either be assigned to a group of pipelines forming a contiguous path or a single storage.

The Capacity Release Offer class has memberships to "Gas Pipelines" OR "Gas Storages" with the following input properties:

Term: Capacity release decisions are made for a term. A term is a time period (for example: 3 months or 1 year) defined by the user.
Release Type: Capacity release decision type could either be swing or base. If it is base, each day within a term will have the same amount of capacity released.
Revenue Basis: Per day revenue obtained by releasing per unit of capacity.
Revenue Adder: Per day revenue obtained in addition to revenue basis for releasing per unit of capacity.

The new class, Gas DSM Program, was implemented to model the benefit gained from reducing demand against the cost of program implementation.

Standard inputs include:

Reduction Type: Used to specify whether Demand Reduction amount is based on Input or Usage Factor
Demand Reduction: Total amount of demand that can be reduced
FO&M Charge: Annual fixed operation and maintenance charge
Variable Cost: Ongoing costs for the DSM Program

DSM programs can also be expansion candidates and will require additional inputs such as LT Max Reduction, and Expansion Program.

For more detailed information about Gas DSM Program, go to its Wiki page.

In addition to existing cumulative usage factor functionality in gas demand, if usage factor is selected for reduction type property:

Note: The DSM program has to be linked to a gas demand that is using usage factors.

Gas Contracts now includes the LT Max Daily Take property. It is the amount of potential daily gas offtake during an LT plan optimization. For an expansion contract, an LT plan will choose the optimal level of offtake for the contract. The resulting Max Daily Take from the LT plan are utilized in the subsequent phases.

Multi-band LT Max Daily Take inputs are interpreted as fixed decision points for an expansion plan. LT plan expansion decision must select one of the specified bands.

For an example, go to the LT Max Daily Take Wiki page.

Gas Pipeline now includes the Max Daily Flow property. It is the maximum amount of gas released daily from a pipeline. Daily gas release can be less than this, but not more. When running with intervals less than 24 hours, the constraints scale down. For example, when running with hourly intervals and a Max Daily Flow of 24 TJ, the pipeline will only be able to release up to 1 TJ each hour.

Gas Pipeline now includes the LT Max Daily Flow property. Gas Pipeline LT Max Daily Flow is the amount of potential daily gas release during LT plan optimization. For an expansion pipeline, an LT plan will choose the optimal level of daily gas release for the pipeline. The resulting Max Daily Flow from the LT plan are utilized in the subsequent phases.

Multi-band LT Max Daily Flow inputs are interpreted as fixed decision points for expansion plan. LT plan expansion decision must select one of the specified bands.

For an example, go to the LT Max Daily Flow Wiki page.

Gas Storage now includes the Carrying Rate property. In each MT/LT time period, the shadow price of gas at each gas node is calculated. This price information is passed through to the ST.

If the model has LT, but not MT, shadow price from LT is used in ST.

If the model has MT (doesn't depend on LT existing), shadow price from MT is passed to ST.

As a result, we define two equations:

Carrying Rate Scalar = shadow price from LT/MT * carrying rate (input property in gas storage class)

Where carrying rate scalar affects storage end volume variables (changing their objective function coefficient) and carrying cost, the equation is as below:

Carrying Cost = EndVolumeOut * Carrying Rate Scalar

Gas Storage now includes the Loss property. Loss in gas storage is based on general storage loss logic:

Storage Loss is the loss due to evaporation, leakage, etc. and is defined as:

Loss = Loss Rate × time × 1/2 (Initial Volume + End Volume).

Gas Storage now includes the LT Max Volume property. It is the amount of potential Max Volume during LT plan optimization. For an expansion storage, an LT plan will choose the optimal size of the storage Max volume. The resulting Max Volume from the LT plan are utilized in the subsequent phases.

Multi-band LT Max Volume inputs are interpreted as fixed decision points for expansion plan. LT plan expansion decision must select one of the specified bands.

For an example, go to the LT Max Volume wiki page.

Gas Storage now includes the Ratchet Type property, with options of Step and Linear. Step is the default and gives the previous behavior. When Linear is specified, the data is input the exact same way as Step, but PLEXOS will interpolate the step function with a piecewise linear function. Using the Linear method will always be more restrictive (given the same data) than the Step method.

Expansion property names for Gas Storages, Gas Pipelines, Water Storages, and Water Pipelines have been updated. The following table shows how the old properties have been renamed in the 8.2 release.

Class	Before 8.2	8.2	Multiplier
Gas Storage	Max Units Built	Expansion Storage	1
Gas Storage	Max Units Retired	Retirement Storage	1
Gas Storage	Max Volume	LT Max Volume	1
Gas Storage	Max Volume	Max Volume	Pre 8.2 units
Gas Pipeline	Max Units Built	Expansion Pipeline	1
Gas Pipeline	Max Units Retired	Retirement Pipeline	1
Gas Pipeline	Max Flow Day	Max Daily Flow	1
Water Storages	Max Units Built	Expansion Storage	1
Water Storages	Max Units Retired	Retirement Storage	1
Water Storages	Max Volume	LT Max Volume	1
Water Storages	Max Volume	Max Volume	Pre 8.2
Water Pipeline	Max Units Built	Expansion Pipeline	1
Water Pipeline	Max Units Retired	Retirement Pipeline	1
Water Pipeline	Max Flow Day	Max Daily Flow	1

New attributes are:

Class	Attribute	Description
ST Schedule	Step Link Mode	Step Link Mode
ST Schedule	Step Skipping	Step Skipping
Transmission	Filter Limits	Filter Limits
Performance	Feasibility Repair Failure	Feasibility Repair Failure
Production	Gas Demand Resolution	Gas Demand Resolution

New input properties are:

Collection	Property	Description
Generator	Strategic Load Rating	Pumping unit/ Anti-generation rating for application in RSI capacity calculations.
Generator	Levelized Capital Carrying Rate	Levelized capital carrying rate.
Purchaser	Strategic Load Rating	Purchaser Load rating for application in RSI capacity calculations.
Battery	Strategic Rating	Generating unit rating for application in RSI capacity calculations.
Battery	Strategic Load Rating	Pumping unit rating for application in RSI capacity calculations.
Gas Contract	Max Renomination	The maximum number of renominations allowed per renomination window for a base gas contract.
Gas Contract	Min Days Between Renomination	The minimum days between renominations for a base gas contract.
Gas Contract	Renomination Start Period	Boolean for specifying user-defined renomination.
Gas Demand	Demand Type	Function structure for demand type inputs.
Gas Demand	Usage Factor Base	Scalar demand value regardless of heat.
Gas Demand	Usage Factor Heat	Scalar heat value regardless of demand.
Gas Demand	Customer Count	Number of customers (that have demand values).
Gas Demand	Usage Factor Heat Point	Scalar temperature levels for piecewise linear function.
Gas Demand	Weather Data Factor	Weather data factor for gas demand function.
Gas Demand	Weather Data Variable	Weather data variable for gas demand function.
Gas Field	Withdrawal Ratchet	The maximum amount of gas that can be withdrawn from a gas field in any interval when defining a gas field ratchet.
Gas Field	Withdrawal Rate Scalar	Scalar to set the maximum amount of gas that can be withdrawn from the field.
Gas Field	Withdrawal Volume Factor	The gas withdrawal factor for a gas field.
Gas Pipeline	Reservation Charge	Reservation charge for gas pipeline.
Gas Pipeline	Reservation Volume	Reservation volume for gas pipeline.
Gas Pipeline	Loss Rate	Loss rate for gas pipeline flow.
Gas Storage	Reservation Charge	Reservation charge for gas storage.
Gas Storage	Reservation Volume	Reservation volume for gas storage.
Gas Storage	Injection Fuel Rate	Fuel injection rate for gas storage.
Gas Storage	Withdrawal Fuel Rate	Fuel withdrawal rate for gas storage.
Gas Storage	Withdrawal Volume Factor	Fuel withdrawal factor for gas storage.
Gas Storage	Injection Volume Factor	Fuel injection factor for gas storage.
Global	Hanging Branches Sample Reduction	Scenario Tree: Flag if the Hanging Branches historical year start are automatically selected by sample reduction.
Region	Transmission Clustering Level	Cluster nodes until this number of equivalent nodes remain (-1 means no clustering).
Region	Transmission Clustering Tolerance	Cluster nodes until this level of accuracy is reached (100% means no clustering).
Weather Station	Gas Demands	The set of gas demands attached to the weather station gas node.
Weather Station	Gas Node	The gas node the weather station belongs to.
Weather Station	Temperature	Temperature value in each level.
Weather Station	Heating Degree Days	Scalar for heating degree days.
Weather Station	Wind Speed	Wind speed value.
Weather Station	x	Value to pass-through to solution.
Weather Station	y	Value to pass-through to solution.
Weather Station	z	Value to pass-through to solution.
Node Companies	Load Share	Percentage share of load ownership.
Constraint Gas Contracts	Units Built Coefficient	Coefficient of number of units built.
Constraint Gas Contracts	Units Retired Coefficient	Coefficient of number of units retired.

New reporting properties are:

Collection	Property	Description
Battery	Shadow Price	Marginal value of energy held in storage
Battery	Maintenance	Capacity out on maintenance
Battery	Discrete Maintenance	Planned capacity out of service
Battery	Distributed Maintenance	Ideal capacity out of service
Gas Contract	Take Quantity	Gas offtake associated with the contract
Gas Contract	Max Daily Take	Max daily gas offtake associated with the contract
Gas Contract	Take Quantity	Gas offtake associated with the contract
Gas Contract	Reservation Cost	Reservation Cost
Gas Contract	Max Daily Take	Max daily gas offtake associated with the contract
Gas Pipeline	Flow In	Quantity of gas pumped into the pipeline
Gas Pipeline	Flow Out	Quantity of gas extracted from the pipeline
Gas Pipeline	Reservation Cost	Gas pipeline reservation cost
Gas Pipeline	Loss	Gas pipeline flow loss amount
Gas Storage	Reservation Cost	Reservation cost for Gas Storage
Gas Storage	Injection Fuel	Fuel amount lost in the gas storage injection
Gas Storage	Withdraw Fuel	Fuel amount lost in the gas storage withdrawal
Gas Zone	Weighted Average Cost	Average cost for gas in entire model
Gas Zone	Total Fixed Costs	Total fixed costs for gas in entire model, including FOM and reservation costs
Gas Zone	Total Variable Costs	Total variable costs for gas in entire model, including productions, withdrawal, injection and others
Gas Zone	Total System Cost	Total system cost for gas in entire model
Gas Zone	Net Variable Cost	Net variable cost for gas in entire model
Gas Zone	Forward Zone Flow	Quantity of gas pipeline flow in forward direction
Gas Zone	Back Zone Flow	Quantity of gas pipeline flow in backward direction
Gas Zone	Net Zone Flow	Net Quantity of gas pipeline flow (forward-backward)
Pool	Load	Total load
Pool	Generation	Generation
Pool	Imports	Imports
Pool	Exports	Exports
Pool	Transmission Losses	Total transmission losses
Pool	Unserved Energy	Unserved energy (USE)
Pool	Cost of Unserved Energy	Cost of unserved energy.
Pool	Dump Energy	Dump energy
Pool	Cost of Dump Energy	Cost of dump energy.
Pool	Total Generation Cost	Total of generation and start and shutdown costs and emissions costs
Pool	Price	Energy price
Pool	Load-weighted Price	Load-weighted average price
Pool	Generation-weighted Price	Generation-weighted average price
Pool	Cost to Load	Cost to load of their energy purchases
Pool	Generator Pool Revenue	Total generator pool revenue
Pool	Export Cost	Cost of exports
Pool	Import Revenue	Revenue from imports
Pool	Customer Load	Total customer load
Pool	Net Generation	Net generation value
Pool	x	Pass-through value (summed in summary)
Pool	y	Pass-through value (summed in summary)
Pool	z	Pass-through value (averaged in summary)
Region	Max Unserved Energy	Maximum unserved energy
Region	Unserved Energy Factor	Ratio of unserved energy to load
Zone	Max Unserved Energy	Maximum unserved energy
Zone	Unserved Energy Factor	Ratio of unserved energy to load

Added Balancing Area Interchange Hurdle to Region Regions. Region Regions Balancing Area Interchange Hurdle defines the hurdle rate of financial exports from parent region to child region.

Added Max Balancing Area Interchange to Region Regions. Region Regions Max Balancing Area Interchange defines the maximum financial exports from parent region to child region. When financial transactions are modeled, each region balances its own load, generation and transactions from other regions.

Note: Max Balancing Area Interchange must be explicitly defined for each pair of export transactions. For example, if Max Balancing Area Interchange is defined for the membership R1.R2, but not defined for R2.R1, then financial transaction from R1 to R2 will be allowed, but no financial transaction will be allowed from R2 to R1.

Added the input property Region Solution that allows varying level of transmission and unit commitment details by region based on importance of a region to the study. Go to the Region Solution page for details.

Added Balancing Area Interchange Hurdle to Zones. Zone Zones Balancing Area Interchange Hurdle defines the hurdle rate of financial exports from parent zone to child zone.

Added Max Balancing Area Interchange to Zones. Zone Zones Max Balancing Area Interchange defines the maximum financial exports from parent zone to child zone. When financial transactions are modeled, each zone balances its own load, generation and transactions from other zones.

Note: Max Balancing Area Interchange must be explicitly defined for each pair of export transactions. For example, if Max Balancing Area Interchange is defined for the membership Z1.Z2, but not defined for Z2.Z1, then financial transaction from Z1 to Z2 will be allowed, but no financial transaction will be allowed from Z2 to Z1.

Added the input property Transmission Attribute Zero Limit Treatment which controls how AC Lines and AC Transformers with zero limits are to be treated in the simulation. Go to the Transmission Attribute Zero Limit Treatment page for details.

Added the output property Node Injection Mismatch which is the absolute value difference between Net Injections and net of Imports and Exports. Go to the Node Injection Mismatch page for details.

Added Batteries Levelized Capital Carrying Rate, which is the yearly cost for the generation project as a percentage of the Build Cost. Go to the Batteries Levelized Capital Carrying Rate page for details.

Water Pipeline Energy Consumed Amount works with Water Pipelines Energy Consumed Flow Level to create a piecewise linear function between the pipeline flow and the electric energy required.

Water Pipeline Energy Consumed Flow Level works with Energy Consumed Amount to create a piecewise linear function between the pipeline flow and the electric energy required.

Water Storage Energy Consumed Amount works together with Energy Consumed Withdrawal Levelto create a piecewise linear function between the storage withdrawal and the electric energy required.

Water Storage Energy Consumed Withdrawal Level works together with Energy Consumed Amountto create a piecewise linear function between the storage withdrawal and the electric energy required.

Click a new output property for details.

GasPipeline: Flow Capacity Outage replaces GasPipeline: Units Out.

Gas Pipeline Flow Capacity Outage reports the amount of reduction in flow capacity due to maintenance or forced outage.

GasPipeline: Max Daily Flow Built replaces GasPipeline: Units Built.

Gas Pipeline Max Daily Flow Built reports the amount of increase in Gas Pipeline Max Daily Flow as a result of the LT Plan Capacity Expansion.

GasPipeline: Max Daily Flow Retired replaces GasPipeline: Units Retired.

Gas Pipeline Max Daily Flow Retired reports the amount of reduction in Gas Pipeline Max Daily Flow as a result of the LT Plan Capacity Expansion.

GasStorage: Max Volume Built replaces GasStorage: Units Built.

Gas Storage Max Volume Built reports the amount of increase in Gas Storage Max Volume as a result of the LT Plan Capacity Expansion.

GasStorage: Max Volume Retired replaces GasStorage: Units Retired.

Gas Storage Max Volume Retired reports the amount of reduction in Gas Storage Max Volume as a result of the LT Plan Capacity Expansion.

WaterPipeline: Flow Capacity Outage replaces WaterPipeline: Units Out.

Water Pipeline Flow Capacity Outage reports the amount of reduction in flow capacity due to maintenance or forced outage.

Water Pipeline LT Max Capacity replaces WaterPipeline: LT Max Daily Flow

WaterPipeline: Max Capacity Built replaces WaterPipeline: Units Built.

Water Pipeline Max Daily Flow Built reports the amount of increase in Water Pipeline Max Capacity as a result of the LT Plan Capacity Expansion.

WaterPipeline: Max Capacity Retired replaces WaterPipeline: Units Retired.

Water Pipeline Max Daily Flow Retired reports the amount of reduction in Water Pipeline Max Capacity as a result of the LT Plan Capacity Expansion.

WaterStorage: Max Volume Built replaces WaterStorage: Units Built.

Water Storage Max Volume Built reports the amount of increase in Water Storage Max Volume as a result of the LT Plan Capacity Expansion.

WaterStorage: Max Volume Retired replaces WaterStorage: Units Retired.

Water Storage Max Volume Retired reports the amount of reduction in Water Storage Max Volume as a result of the LT Plan Capacity Expansion.

Decision Variable Balancing Region From is the set of Balancing Region "From" objects involved in the Decision Variable.

Decision Variable Balancing Region To is the set of Balancing Region "To" objects involved in the Decision Variable.

Decision Variable Balancing Zone From is the set of Balancing Zone "From" objects involved in the Decision Variable.

Decision Variable Balancing Zone To is the set of Balancing Zone "To" objects involved in the Decision Variable.

PLEXOS 8.200 R00 Beta, R02, R04 Release Notes

1. Important Changes

2. Upgrade Compatibility

3. General Changes

3.1. Solver updates

4. Major Features: Release 8.2 R00 (Beta) - 4th December 2019

4.1. Step Link Mode Feature

4.2. Weather Class for Gas

4.3. Performance Improvements for the Importer

4.4. Transmission Clustering Feature

4.5. Gas Modelling - Seasonal Renomination

4.6. Gas Field Withdrawal

4.7. Gas Demand Type

4.8. Gas Zone Reporting

4.9. Raw File Import Enhancements

4.10. Support for datafile reading from an online source

4.11. Transmission Limit Filtering

4.12. Meta Fields

4.13. Data Grid Displays data for all Collections

5. Major Features: Release 8.2 R00 (Beta) - 11th March 2020

5.1. Fuel Production Rate

5.2. Gas Capacity Release Offer

5.3. Gas DSM Program

5.4. Gas DSM Usage Factors

5.5. Gas Contracts LT Max Daily Take

5.6. Gas Pipeline Max Daily Flow

5.7. Gas Pipeline LT Max Daily Flow

5.8. Gas Storage Carrying Rate

5.9. Gas Storage Loss

5.10. Gas Storage LT Max Volume

5.11. Gas Storage Ratchet Type

5.12. Gas Property Upgrades

6. New Attributes

7. New Input Properties

8. New Reporting Properties

9. Additions for 8.2 R02

9.1. Region Regions Balancing Area Interchange Hurdle

9.2. Region Regions Max Balancing Area Interchange

9.3. Tiered Dispatch for Regions

9.4. Zone Zones Balancing Area Interchange Hurdle

9.5. Zone Zones Max Balancing Area Interchange

9.6. Option to treat 0 rating as unlimited

9.7. Reporting of Injection Mismatch in Node output

9.8. Batteries Levelized Capital Carrying Rate

9.9. Water Pipeline Energy Consumed Amount

9.10. Water Pipeline Energy Consumed Flow Level

9.11. Water Storage Energy Consumed Amount

9.12. Water Storage Energy Consumed Withdrawal Level

9.13. New Output Properties

10. Release 8.2 R04

10.1. GasPipeline: Flow Capacity Outage

10.2 GasPipeline: Max Daily Flow Built

10.3 GasPipeline: Max Daily Flow Retired

10.4 GasStorage: Max Volume Built

10.5 GasStorage: Max Volume Retired

10.6 WaterPipeline: Flow Capacity Outage

10.7 WaterPipeline: LT Max Capacity

10.8 WaterPipeline: Max Capacity Built

10.9 WaterPipeline: Max Capacity Retired

10.10 WaterStorage: Max Volume Built

10.11 WaterStorage: Max Volume Retired

10.12 DecisionVariable: Balancing Region From

10.13 DecisionVariable: Balancing Region To

10.14 DecisionVariable: Balancing Zone From

10.15 DecisionVariable: Balancing Zone To