Base + Delta targeting

Targeting allows the output from the unit to be targeted so that the asset properties are manipulated during simulation to try and meet the configured target.

To set a unit target:

1. Open the Configuration Inspector.

2. Define the operating timespan for the configuration.

3. Select the unit stream to target by double-clicking the stream in the Targeting tab. The stream can be a feed or product.

4. If necessary, choose any other stream variables that might be included in the targeting equation.

5. Write the targeting equation. This might be an absolute number, or could be an equation using selected variables.

6. Configure the sources that will be manipulated during targeting. For each source, choose the operating parameter to control, set how it will be controlled in terms of rate or percentage and so on, and choose the order of priority in which sources are evaluated.

   

The Target Value section lets you enter the value to be targeted. The target value can be an equation using selected variables.

The Sources section lets you review the sources to the unit and set what aspect of them can be controlled. Upstream assets such as manifolds must have at least one free available ratio output to use for diverting excess material.

Using the Control value, you can determine how the different sources are used for targeting.

Note: Only tanks and manifolds are supported upstream target assets.

If a source is a tank, you have additional choices under the Respect tank column band:

• Status: Select this check box to make sure that no material is drawn from a tank until its state is set to Available.

• Working Min: Select this check box to avoid emptying the tank below its working minimum.

  Note: When using a tank as an upstream target, if only one tank is available to act as a buffer, this tank must be set to be running gauge to be used for targeting.