Abstract
The paper tackles the problem of providing optimised operational schedules for a water supply system consisting of several reservoirs and pumping stations, coupled by direct pipe-lines which contain distributed take-off points. Each of the pumping stations use parallel combinations of fixed and variable speed pumps with direct costs dependent upon time-varying electricity tariffs and indirect costs dependent upon frequency of pump switching and associated reservoir levels.After de-coupling into one-dimensional non-linear systems an analysis is made of the combined effects of pump combinations and speeds upon the system characteristics. For the particular case studied, this yields simplified operation and cost functions in terms of independent control parameters, which have been incorporated into a dynamic programming scheme. It is anticipated that the method will be expandable to cover the complete system using co-ordination or successive approximation techniques. A preliminary application of the optimised schedules to the actual system has produced satisfactory results.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
