Murphy. Department of Civil and Environmental Engineering, University of Adelaide ... experience, to adjust pipe, tank, pump and valve sizes and locations to ..... General Electric has used it for gas turbine design to increase fuel efficiency, ...
NOV~19-0~
07:29 AM
FREY WATER ENGINEERING
847 670 7973
P.01
A NEW BREAKTHROUGH TECHNOLOGY OPTIMIZES DISTRlBUTION SYSTEM DESIGN AND OPERATrON Jeffery Frey Frey Water Engineering, (nc, Arlington Heights, I1Iinois Angus R. Simpson, Graeme C. Dandy, Laurie 1. Murphy Department of Civil and Environmental Engineering, University of Adelaide Adelaide, Australia
The subject of this presentation jg a new analysis technique for distribution system design and operation which can cut capital improvement and life cycle costs up to 50%. The new technique is called genefic aiKorifhm pipe network optimization. The genetic algotithm (GA) optimization technique has been developed by researchers at the University of Adelaide in Australia over the past six years. During the last two years, the GA optimization technique has moved from the realm of research to that of applied engineering, The research group at University of Adelaide has performed a number of design contracts for clients in Australia. Earlier this year, Frey Water Engineering helped [hem complete a benchmark study for the Fort CoUins-Loveland Water District in Colorado. In that study, the GA pipe network optimization technique was used to review a Year 2015 expansion plan prepared using traditional simulation design methods, The GA optimization identified an improved layout which cut instaHed pipe costs from $5.85 million to $2.97 million - a savings of45)01o. The Systems Engjneer for Fort Collins-Loveland Water Distn(.::t is Mr, Terry Farrill, a distribution system modeling specialist with 20 years experience. After his detailed review of the GA study results, Terry expressed the following opinion: "Genetic algorithm pipe network optimization is by far the most significant advance in distribution system design and operation in the past 40 years - it's as big a jump as going from manually solving Hardy Cross to doing hydraulic analysis on a computer," What is Genetic Algorithm Optimization?
GA optimization is a strllcllm:d seart..:h technique which usually gets classified in the field of artificial intelligence, Back in the 1970s, Jo1m Holland at the University of Michigan came up with the idea to use computer-based artificial evolution to search for solutions to complex problems. The computer starts with an initial population of solutions which are then manipulated and combined repeatedly over many generations in order to evolve improved solutions. Holland received a MacArthur Foundation genius grant for his work which opened up an entire new field of optimization research in genetic algorithms. .._, ..., _ _
NOV~19-03
07:30 RM
FREY WRTER ENGINEERING
847 670 7973
P.02
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NOV~19-03
07:30 AM
FREY WATER ENGINEERING
847 670 7973
What are the Shortcomings of Traditional Simulation Design? The AWWA Manual M32, nislrihulioll Network Analysis for Waler (ltililil.!s draws a clear distinction between the simulation and optimization approaches to system design It states: "A distribution system may be analFed using model-simulation programs or systemoptimization programs. Simulation programs determine heads and flows at all nodes . and pipes in the network. Optimization programs determine pipe sizes, pump heads, or pipe locations that optimize a particular objective, usually the lowest-cost solution." The traditional approach for planning and design of distribution system improvements is to use a computer hydraulic simulation program to model the system. With any of these programs. whether KYPIPI
