Model for planning water‐energy systems

A mathematical programing model which has a nonlinear objective function and linear constraints is developed for the planning of composite regional water-energy systems and is solved using the largescale generalized reduced-gradient technique. Three interacting subsystems (the water subsystem, the power generation subsystem, and the coal and synthetic natural gas subsystem) are modeled to define the interlinked water-energy system. The objective of the model is to minimize the sum of the capital, operating, and distribution costs incurred in meeting future water, gas, coal and power demands within a region. The nonlinear objective function represents an improvement over existing models, as it permits analysis of nonlinear system response and economies of scale. The model is applied to a region located in northeastern Texas.

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