Joint optimization of a reservoir and a canal system for irrigation water allocation | |
| Author | Kar, Subrat |
| Call Number | AIT Thesis no.WA-90-16 |
| Subject(s) | Reservoirs Irrigation water |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | An explicit stochastic dynamic programming (SDP) model is used in this study to derive the optimum operation policies of an irrigation reservoir. The objective function minimizes the expected annual squared deviation between target irrigation demand and the reservoir release, satisfying the system constraints. The S.D.P. Model uses the conventional backward looking algorithm with inflow to the reservoir treated as the first order Markov Chain. The rainfall and inflow data available at the site were not considered enough for the purpose therefor synthetic data generated by ARMA (Bok Jenkins Procedure) for 150 years were applied as input to both the chance-effective rainfall computation SDP Model. The optimal decade wise (10-Day Basis) operation policies of the reservoir are expressed in terms of final storage state at the end of each decade, as the function of the initial storage state at the beginning of the current decade, and the inflow during the current decade. After achieving the optimal release policy by stochastic reservoir operation model, the optimal release between the two main canals were obtained as per the total subcommand areas that it serves. A Linear Programming model was developed to optimally allocate water to the demand nodes of left and right main canal under different scenarios. The objective function for the LP model was to distribute the reservoir releases to minimize the maximum relating deficit weighted deviation of demand and supply. The reservoir releases was modified by recycling the required allocations to the SDP policy. This integrated iterative SDP - Simulation - LP Model was applied to the Kanjhari Irrigation Project in Orissa, India, The results show the usefulness of the modelling approach which combines the long-term SDP based reservoir operation policy with the short-term spatial allocation of water along the canal. |
| Year | 1990 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Paudyal, Guna N. |
| Examination Committee(s) | Harboe, Ricardo ;Gan, Thian Yew ;Loof, Rainer |
| Scholarship Donor(s) | Canadian International Development Agency |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1990 |