Optimal Pump Scheduling by Linear Programming
Publication: World Environmental and Water Resources Congress 2009: Great Rivers
Abstract
Energy is one of the largest water utility expenses. This cost is greatly associated with the pump operation. An optimum pump schedule can reduce the cost significantly while maintaining hydraulics in an acceptable range. In this paper, the pump station relationships are linearized using relationships among energy required, pumping flow, demand factors and tank storage or tank water levels. A linear programming (LP) optimization problem is formulated and solved for a single tank system for the optimal pump schedule to minimize energy cost. This LP model can be solved very quickly for a "near optimal" solution. Available online data can be then incorporated to update the schedule each hour in real-time. This paper describes preliminary methodologies that can be used to optimize the pump schedule and reservoir control. Future work will extend the approach to multiple tanks and pump station systems, better pump curve representations, and spatially variable demands.
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Copyright
© 2009 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Benefit cost ratios
- Business management
- Computer programming
- Computing in civil engineering
- Energy engineering
- Energy sources (by type)
- Engineering fundamentals
- Equipment and machinery
- Financial management
- Hydro power
- Linear functions
- Mathematical functions
- Mathematics
- Practice and Profession
- Pumping stations
- Pumps
- Renewable energy
- Storage tanks
- Tanks (by type)
- Water and water resources
- Water management
- Water supply
- Water supply systems
- Water tanks
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