Dispatch of Pumped Hydro Storage on an Interconnected Hydrothermal System

The use of familiar dispatch relationships for economic dispatch is broadened to encompass all the dispatch requirements of a system which is made up of pumped hydro storage, conventional stored hydro, steam units, and extensive storage make a ``predispatch´´ determination of optimum schedules for all hours of the entire day extremely important. The use of standard dispatch equations is made possible by the added concept of water ``worth vs cost.´´ Practical application techniques are described. The execution of these dispatch techniques is enhanced by the use of a digital-analog dispatch computer.