||Experiment in Computer-Assisted Supervisory Control of a Water Distribution System.
DeMoyer, Jr, Robert ;
Gilma, Harold D. ;
Goodma, Maurice Y. ;
||General Electric Co., Philadelphia, Pa. Re-entry and Environmental Systems Div.
||DI-14-31-0001-3162; OWRR-C-1725(3162); C-1725(3162)(2),; 02871
( Water distribution ;
Mathematical models) ;
Data processing ;
Management methods ;
Automatic control equipment ;
Time sharing ;
Analysis of variance ;
Computer programming ;
Regression analysis ;
Automatic water distribution systems ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The object was to apply the results of the completed mathematical model study to a water distribution system. A program was developed for use by operators at the Philadelphia Water Department's Load Control Center. In practice an operator entered current logging data (pump flows, pressures, tank flows, levels) from the district into a timesharing terminal. The program then presented its prediction of the results of operating the various acceptable pumping combinations for a projected one hour period. Variations in consumer demand were considered by means of a stored demand profile curve developed from an analysis of the Center's logging sheets. The programmed model then made a recommendation for the pump combination to apply in order to achieve as closely as possible specified tank levels (pre-stored as a function of time). Peak power limits for the pumping stations were preserved. The Pressure District simulation was based upon a regression model of logged data. (Author)