The derivation and evaluation of operating rule for Shihmen reservoir

• Main Authors: Hsu,Jong-Pao, 徐忠寶
• Other Authors: Su,Ming-Daw
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/74795024798436737330

碩士 === 國立臺灣大學 === 農業工程學系 === 84 === The yield of a reservoir is greatly affected by the operating rule used.An improper operating rule may cause waste of water resource and lead to a water supply shortage at downstream area. To derive an efficient operating rule becomes an important issue. Most of the reservoirs in Taiwan are operated according to a set of ruling curves.This method of ruling curves is simple but rigid .It is not flexible to response to the change of input and output of the water system such as incoming stream flow or the down- stream water demand.Some studies have been done for major reser- voirs to modify the current ruling curves for better yield.But the characteristics of rigidness is still hanging there.The objective of this study is derive new operating rules for better operation of the reservoir. An optimization model was built for the target reservoir.The historical records of inflow and release were input and optimum operation for each year were obtained.The optimal operations was then related to selected predicting variable through statistical analysis and operating rules derived.These rules were then fed into a simulation model for evaluations.Stochastic dominance was used to evaluated the derived rules and current ruling curve.The results reveal that derived rule of this study is better than the current and previous proposed modified ruling curves in terms of frequency and scale of shortage.