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System constraints include the maximum and minimum junction pressures, maximum pipe velocities, maximum pump, pipe and valve flows, maximum junction water age, as well as maximum, minimum and ending tank levels. The decision variables include pump, valve, and pipe operating controls. Multiple pumps, valves and pipes can be grouped where each component in a group will operate in an identical fashion, having similar operating schedules and switching times. A maximum of 100 groups per variable type can be selected with this version of the Scheduler. Following the completion of a successful Scheduler run, the user is you are presented with the best scheduling policy identified for the input parameters specified. The output results are the operational time-based control rules that indicate when a particular group of pumps, valves or pipes should be turned on or off over the specified period of time along with the total cost.

Finally, the Scheduler can automatically update the active Control Set with the computed control rules or the user you can define a new Control Set and populate it with the resulting operation policy.

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The View pull-down menu provides access to Input Data, Simulation, Output Report, and Export dialog boxes as well as Exits the Scheduler module.

Run

This menu will Start/Stop the optimization routine.

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The View Menu pull-down allows the user you to access the Input Data, Simulation Run Manager, Output Report Data and the Export Tab of the Scheduler Interface. The portion of the dialog box shown below shows you the choices available.

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Control Group - You have the ability to define the control groups to be used in the optimization analysis. Each control group is identified as having one or more pumps, valves and pipes. In addition, you can modify any group previously identified, set the number of acceptable switches, start time, optimization duration, and switching interval for each group. Each pump, valve and pipe can belong to only one control group within a single data field column (e.g., Pump ID 10 cannot belong to both Pump Group 1 and Pump Group 2). You can create as many data field columns as desired to evaluate different grouping options (various operational improvement alternatives). Only pumps, valves and pipes that are candidate for optimization need to be associated with a group ID. Pumps, valves and pipes that do not belong to a particular group will remain unaffected (their operating status unchanged) by the optimization process. The Scheduler will determine a single combination of control rules (start and stop times) for all pumps, valves and pipes within any particular group. If distinct control rules are desired for specific pumps, valves and pipes then these components must be placed in separate groups.

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