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Controlling Reservoir Discharge with a Status Element

Description

This model demonstrates the use of a Status element to control discharges from a reservoir. The discharge from this reservoir is controlled using a Status element that turns the discharge on or off depending on the current state of the reservoir. A True state in the Status element indicates the discharge request is ON while a False status indicates OFF. The discharge request turns on when the reservoir volume exceeds 5000 m3 but does not turn off until the reservoir volume drops below 4000 m3. This delay in the switch is made possible by the two trigger definitions of the Status element. As a result, the Status element creates a "deadband" between the reservoir volume of 4000 m3 and 5000 m3 for which the reservoir can operate around.

 

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