Configuring Balancing Redistribution

Use Balancing Redistribution to conditionally distribute a calculated forecast value for a group of meters based on whether the difference of two summed sets of meters is positive or negative. The two sets of meters represent a Sum of Receipts ( S Receipts ) and a Sum of Deliveries ( S Deliveries ). For example, this method of redistribution can assist you to make decisions about moving gas to and from storage as needed, or balancing gas receipts and deliveries across a pipeline.

For a Positive Value Distribution, if the S Receipts – S Deliveries > 0 (is positive), the aggregated forecast value for a group of meters will be distributed to the configured set of child meters.

For a Negative Value Distribution, if the S Receipts – S Deliveries < 0 (is negative), the aggregated forecast value for a group of meters will be distributed to a different configured set of child meters.

The distribution supports both a configured percentage assignment value (Fixed Quantity Assignment method) and a historical time offset forecast profile method (Balance from Historical Profile Assignment method). See Configuring Assignment From Parent for more information.

Note: See Configuring Expression Redistribution for information about Redistribution by expression.

To Configure Balancing Redistribution

Click the Meters/Owners page of the ELF Editor.
Add a New Child or New Sibling, or double-click to Edit a configured meter.
Configure the properties in the General page.
Click the Assignments page.
Click Balance Redistribution from the Value Assignment Type drop-down menu.
Click Create New Rule… or Edit Meter's Rules… or Add to Existing Rules… to view the Edit Balancing Redistribution Rule dialog box.
Configure the rule using the properties described below.

Edit Balancing Redistribution Rule

The properties and buttons on the Edit Balancing Redistribution Rule dialog box are described below.

Parameter	Description
Enable Rule	Click to enable or disable the balancing redistribution rule.
Comment	Type an optional description or reason for the balancing. Maximum length is 80 characters.
Redistribution Type	Select the redistribution type to indicate when during the forecasting process to have redistribution occur. Options include: Post Forecast — Redistribution occurs after all direct forecasting is complete. Post Assignment — Redistribution occurs after all assignments from parent groups is complete. Post Aggregation — Redistribution occurs after all group aggregation is complete.
Sum of Receipts	Specifies the source meters in the Sum of Receipts group. Columns include the Target ID, External ID, and Assignment Stage for each meter. Click Add to select source meter(s) to add to the list. Click Del to remove a selected source meter(s) from the list. Note: The Assignment Stage for the source meter(s) must match the Redistribution Type.
Sum of Deliveries	Specifies the source meters in the Sum of Deliveries group. Columns include the Target ID, External ID, and Assignment Stage for each meter. Click Add to select source meter(s) to add to the list. Click Del to remove selected source meter(s) from the list. Note: The Assignment Stage for the source meter(s) must match the Redistribution Type.
Positive Value Distribution	For a Positive Value Distribution, if the S Receipts – S Deliveries > 0 (is positive), the aggregated forecast value will be distributed to this set of child meters. Columns include the Target ID, External ID, and Assignment Rule for each meter. Click Assignments to view or modify the assignment rules for the children in the Positive Value Distribution group. See Configuring Assignment From Parent for more information. Click Add to select balance redistribution destination meter(s) to add to the list. Click Del to remove selected destination meter(s) from the list.
Negative Value Distribution	For a Negative Value Distribution, if the S Receipts – S Deliveries < 0 (is negative), the aggregated forecast value will be distributed to this set of child meters. Columns include the Target ID, External ID, and Assignment Rule for each meter. Click Assignments to view or modify the assignment rule for the children in the Negative Value Distribution group. See Configuring Assignment From Parent for more information. Click Add to select balance redistribution destination meter(s) to add to the list. Click Del to remove selected destination meter(s) from the list.
	Click to move a destination meter from a positive distribution to a negative distribution, or from a negative distribution to a positive distribution.

Validation Errors

If the balancing redistribution rules are misconfigured in any way, validation errors will be displayed at the bottom of the dialog box. Errors must be resolved before OK is enabled.