AI SearchOperation rules by heuristic and optimizing approaches for series or parallel reservoirs (Record no. 83401)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03894nam a2200421 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818170630.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 120698 th eng |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10479090 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.WA-90-28 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Ratnayake, Uditha Rohana |
| 245 10 - TITLE STATEMENT | |
| Title | Operation rules by heuristic and optimizing approaches for series or parallel reservoirs |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1990 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 119 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. WA-90-28 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 1990 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Many methods are suggested to perform optimization of reservoir systems. But these optimization techniques are not able to analyze complicated reservoir system due to the curse of dimensionality associated in formulation of the mathematical model. This study is focused on deriving an operating policy by heuristic approach for a series reservoir system and a parallel reservoir system both consisting of two reservoirs each. Three heuristic models with different approaches are tested to find the best approach. In the model one two state variable deterministic dynamic programming (DDP) model with objective function of maximizing total power generation is solved for 12 months of average inflows and irrigation demands to obtain operating rules for each reservoir and they are used in a simulation model and improved until an acceptable result is reached. In the second model DDP is applied to entire time horizon of 32 years and also sequentially to the system to find a firm energy target and then the systems are simulated by supplying this targets and thereby improving them to a maximum possible without system failures. The third model is based on two thumb rules. The series system is operated by satisfying demands from the downstream reservoir while parallel system is operated by maintaining its ratio of empty space of a reservoir to the respective expected inflow, constant. Model 1 consumes the highest amount of computer time but the gain on the total power production compared to the third model is marginal. The second model gives better answers in much less computer time. Third model gives the best results with lesser computer time for both systems. It proves that the above thumb rule in acceptable in operation of the parallel reservoir system for power generation. And also the rule can be applied to series reservoir system with power and irrigation demands in such a way that the wastage of water form the system compared to irrigation is minimal. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Reservoirs |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Harboe, Ricardo, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Gupta, Ashim Das, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Suphat Vongvisessomjai, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Royal Government of Netherland, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. WA-90-28 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B18606">http://203.159.5.9/ait-thesis/detail.php?q=B18606</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10479090 |
| b | mnait |
| c | s |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240403 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | s |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120574107 |
| CREATED | CREATED : 2014-02-04 |
| RECORD Id | RECORD # : i1278512x |
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| Barcode | Barcode : 30050160033733 |
| CREATED | CREATED : 2016-02-15 |
| RECORD Id | RECORD # : i12881569 |
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| Barcode | Barcode : 30050121028228 |
| CREATED | CREATED : 2022-10-18 |
| RECORD Id | RECORD # : i13408537 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.WA-90-28 | 30050120574107 | 18/08/2026 | 3 | 18/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.WA-90-28 | 30050160033733 | 18/08/2026 | 18/08/2026 | 40-Archives | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.WA-90-28 | 30050121028228 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication |