Water Quality Optimization through Selective Withdrawal.

摘要

This report discusses the problem of operating a multipurpose reservoir through regulation of a multilevel outlet works for a number of water quality objectives. Operation of a reservoir to meet downstream goals for multiple water quality parameters often results in conflict. A problem formulations and solution are presented as an attempt to resolve these conflicts. The multiparameter reservoir regulation problem is formulated in terms of a scalar objective function, which indicates the relative value of any specified operation strategy, and a linear constraint set. These constraints include the hydraulic characteristics of the outlet works and any specified bounds on the release concentrations of the water quality parameters. Two different problem formulations are addressed. The target-concentration problem is formulated to achieve specific downstream target concentrations without actual constraints on the release concentrations. The constrained-concentration problem is formulated to allow the specification of upper and lower bounds for all or some of the water quality constituents. Both formulations can accurately deal with the hydraulic complexity of a multilevel outlet works. The algorithms presented herein can be used to regulate a reservoir in a real-time mode in which the state of the system is known by actual measurements. The algorithms can also be used with as ecosystem simulation model in which the state of the system is predicted. (Author)