Reservoir operation management by optimization and stochastic simulation

Abstract

The increase of population and socio-economic activities has escalated the water demand for various purposes and put stress on existing water resources across the world, in particular in arid and semi-arid countries. Hence, managing the optimum use of water resources is a crucial issue and it is imperative to adopt realistic policies to ensure water is used more efficiently in various sectors.This paper presents an optimization analysis to determine monthly operating rules for the Doroudzan Reservoir located in southern Iran. Different strategies under limited water availability conditions have been analyzed by running an optimization model based on observed and synthetic inflow data, and the performance indicators of each strategy are presented. Each strategy includes a minimum requirement release in the optimization process and results in a specific operation policy. In this study, LINGO is applied to determine optimum operational parameters and the synthetic inflows are generated using the Monte Carlo simulation method. The results demonstrated that the applied methods could efficiently optimize the current operation policy of an existing reservoir in a single-objective framework.

A Framework to Assess the Reliability of a Multipurpose Reservoir under Uncertainty in Land Use

“…(b) During the operational period, reservoir storage (S i,j ) must be higher than dead storage (S min ) and lower than active storage (S max ) S i,j ≤ S max S i,j ≥ S min (3) where S i,j is the reservoir storage during operation time, S max is active storage, and S min is dead storage. (d) Meeting minimum sector demand priorities: As the reservoir cannot meet all demands over the operation period, the following constraint for minimum allowable releases was implemented (as proposed by Ziaei et al [1],Goodarzi et al [4]):…”

“…In addition, socioeconomic developments can lead to significant changes in land-use, which can subsequently impact on water resources critical for downstream economic development [3]. Effective management of water resources with different water use and policy constraints, in conjunction with projected land-use changes, is thus a key challenge for sustainable development [3,4].…”

Economics

“…Water demand-supply imbalances and problems related to limited financial resources and water scarcity in urban areas of developing countries are of growing concern to water managers. Water resources are stressed by growing population levels, economic activity, and as noted by Goodarzi et al (2013)…”