Working with Change Sets

Change Sets provide the ability to create and save multiple sets of data changes within a single Aurora project. They are a convenient and efficient way to set up and run sensitivity studies or scenario analysis beyond a base case set of assumptions.

Creating a Change Set: Fuel Table

Select the Input Data button on the Home Tab ribbon to open the Input Data Assumptions window.
Select and open the Fuel table.
Filter on the Fuel Name column for contains "Henry." The view will now display only the Henry Hub fuel reference.
To change the annual fuel price for 2018, select the Price cell and double-click on the reference to open the Time Series Annual table.
Scroll over to the column that contains the price for 2018. Change the price and press Enter.
The edited input table name is now displayed on the left side of the Input Data Assumptions window under the heading Unassigned Changes.
Select the Save to Memory button on the Change Set ribbon menu and enter a name for the Change Set ("HenryHub_High" in the example below).

NOTE: The Change Set name cannot contain special characters and is limited to 50 characters.

Click the OK button to create and save the Change Set to memory (at this point it is not permanently saved, but the Change Set is active).
Use the View/Edit Table Differences to see the changes to the base data:

Creating an Additional Change Set: Fuel Table

Select and deactivate the active Change Set by using Deactivate from the Change Set Right-Click Menu.

NOTE: If the active Change Set is not first deactivated, all subsequent changes to the input data will be applied to the active Change Set.

Make additional changes to the input data as desired (described above).
The edited input table name is again displayed on the left side of the Input Data Assumptions window under the heading Unassigned Changes.
Select the Save to Memory button on the Change Set ribbon menu and enter a name for the Change Set ("HenryHub_Low" in the example below).

NOTE: The Change Set name cannot contain special characters and is limited to 50 characters.

Click the OK button to create and save the Change Set.

Applying Change Sets for Scenario Studies

Navigate to the Study Cases form in Project Setup.
Select the Run Using Study Case List option.

Add a new case by click the New Case button. By default the case will automatically be checked for use in the simulation.
Customize the Run_ID to be used in the output report by entering it in the Run ID box using only letters and/or numbers in the field (no special characters). By default, when no Run ID is defined Aurora will assign a concatenation of the Change Set names for that case, e.g. InpDB<--HenryHub_Low.
Select the desired Change Set(s) to be used in the case using the Select Change Sets button. A list of available Change Sets will appear in a popup box. The Selected Change Sets field can be left blank if the case will not use a change set (i.e. run using only the Input database).

Enter the three scenarios as shown above. If not already selected, check the box next to each case to activate the ones to be used in the study.

Tutorials

Working with Change Sets