بهره برداري بهينه از مخزن با استفاده از مدل برنامه ريزي خطي و كاربرد آن در سه وشمگير

Optimization of Reservoir Operation using linear programming and its application in Voshmgir reservoir

There are major and medium dams in Iran that have been already completed and they are being operated conventionally. To attain maximum benefits of them, it is imperative to regulate the reservoirs in the most efficient and judicious manner. This investigation deals with the development of an operation policy for Voshmgir reservoir located in Golestan province in Iran. This research has been aimed to serve water for irrigation purpose of Voshmgir project. Using inflow, demand and evaporation, reservoir simulation was performed. A linear programming model was developed for the reservoir to get the initial feasible solution. The developed optimization model is based on S and SQ rules. This model was applied for reservoir simulation and optimization using 25 years historical data. Rule curves were prepared using the reliabilities 50, 75, 85 and 95 percent. A comparison was made between the currently followed operation policies and the proposed operation policy. The results showed that current operation policy is unable to supply the demand in critical months and proper percautions are not taken into account for probable future floods. The reservoir water storage in proposed operation policies showed an increased of 17 percent more than practiced policy. The average monthly supply by using the S and SQ rules are approximately 47.63 and 49.23 percent, respectively while according to practiced policy this value is 38.7 percent.