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Dissertations / Theses on the topic 'Reservoir inflows'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Xie, Ming 1973. "Prediction of daily net inflows for management of reservoir systems." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33043.

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Operational planning of water resource systems like reservoirs and hydropower plants calls for real-time forecasting of reservoir inflow. Reservoir daily inflow forecasts provide a warning of impending floods or drought conditions and help to optimize operating policies for reservoir management based on a fine time scale. The aim of this study was to determine the best model for daily reservoir inflow prediction through linear regression, exponential smoothing and artificial neural network (ANN) techniques. The Hedi reservoir, the third largest reservoir in south China with a 1.144 x 109 m 3,

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2

Dixon, Samuel G. "Seasonal forecasting of reservoir inflows in data sparse regions." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/33524.

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Management of large, transboundary river systems can be politically and strategically problematic. Accurate flow forecasting based on public domain data offers the potential for improved resource allocation and infrastructure management. This study investigates the scope for reservoir inflow forecasting in data sparse regions using public domain information. Four strategically important headwater reservoirs in Central Asia are used to pilot forecasting methodologies (Toktogul, Andijan and Kayrakkum in Kyrgyzstan and Nurek in Tajikistan). Two approaches are developed. First, statistical forecas

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3

Westra, Seth Pieter Civil &amp Environmental Engineering Faculty of Engineering UNSW. "Probabilistic forecasting of multivariate seasonal reservoir inflows: accounting for spatial and temporal variability." Awarded by:University of New South Wales. Civil & Environmental Engineering, 2007. http://handle.unsw.edu.au/1959.4/40630.

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Hydrological variables such as rainfall and streamfiow vary at a range of temporal scales, from short term (diurnal and seasonal) to the inter annual time scales associated with the El Nino - Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) phenomena, to even longer time scales such as those linked to the Pacific (inter-) Decadal Oscillation (PDO). This temporal variability poses a significant challenge to hydrologists and water resource managers, since a failure to take such variability into account can lead to an underestimation of the likelihood of droughts and sequences of above a

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4

Del, Castillo Maravi Yanil. "New inflow performance relationships for gas condensate reservoirs." Texas A&M University, 2003. http://hdl.handle.net/1969/354.

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5

Burton, Holly. "Reservoir inflow forecasting using time series and neural network models." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29800.

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In practice, the reservoir net inflow is computed based upon the application of the water balance equation to the reservoir system since it is difficult to obtain direct and reliable measurements of this variable. The net inflow process has been thus found to possess a random behaviour because it is related to the stochastic nature of various physical processes involved in the water balance computation (e.g., precipitation, evaporation, etc.). Therefore, the aim of this research is to propose a forecasting method that can accurately and efficiently predict the random reservoir inflow series. T

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6

Burton, Holly. "Reservoir inflow forecasting using time series and neural network models." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0017/MQ54220.pdf.

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7

Zaman, Md Sazid. "Decision analysis framework for high inflow events for small hydropower reservoir systems." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/28036.

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Hydro system operators are often confronted with a myriad of conflicting and challenging decision situations. In particular, managing hydroelectric facilities during high inflow or unusual events can be complex, time consuming and challenging. Most high inflow events that challenge operational planners are driven by hydrology, with either too much or too little water being available. Other factors such as unusual electricity market conditions, dam safety or equipment concerns also drive decision making. In a typical case operators try to balance multiple, and at times, competing objectives d

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8

Barnard, Joanna Mary. "The value of inflow forecasting in the operation of a hydroelectric reservoir." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27759.

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The present study examines the value of conceptual hydrologic forecasting in the operation of a hydroelectric generating project. The conceptual forecasting method used is the UBC Watershed Model. The value of the conceptual forecast is determined by comparing results obtained by use of the forecast to those obtained by use of a forecast based purely on the historic record. The effect of the size of the reservoir on the value of the forecast is also considered. The operation of a hypothetical project is modelled using dynamic programming. The operation of the project is optimized using the co

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9

Faraca, Lee Joon. "A WATER BALANCE AND SEDIMENT YIELD ANALYSIS MODEL FOR THE LOPEZ LAKE RESERVOIR." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2203.

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Lopez Lake Reservoir is the primary source of potable water for the Cities of Arroyo Grande, Grover Beach, Pismo Beach, and to the Community Service Districts of Oceano and Avila Beach. In this study, a water balance and sediment yield analysis model was developed for the reservoir’s watershed. The model was used to estimate evaporation from the lake and to examine the effects of a wildfire on the reservoir. Evaporation and wildfire are dependent on variables that change on a spatial and temporal scale, making modeling challenging. The County of San Luis Obispo uses pan coefficients to estimat

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10

Bourdin, Dominique R. "A probabilistic inflow forecasting system for operation of hydroelectric reservoirs in complex terrain." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/45173.

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This dissertation presents a reliable probabilistic forecasting system designed to predict inflows to hydroelectric reservoirs. Forecasts are derived from a Member-to-Member (M2M) ensemble in which an ensemble of distributed hydrologic models is driven by the gridded output of an ensemble of numerical weather prediction (NWP) models. Multiple parameter sets for each hydrologic model are optimized using objective functions that favour different aspects of forecast performance. On each forecast day, initial conditions for each differently-optimized hydrologic model are updated using meteorologic

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11

Zhou, Dequan. "The value of one month ahead inflow forecasting in the operation of a hydroelectric reservoir." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30145.

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The research assesses the value of forecast information in operating a hydro-electric project with a storage reservoir. The benefits are the increased hydro power production, when forecasts are available. The value of short term forecasts is determined by comparing results obtained with the use of one month ahead perfect predictions to those obtained without forecasts but a knowledge of the statistics of the possible flows. The benefits with perfect forecasts provide an upper limit to the benefits which could be obtained with actual less than perfect forecasts. The effects of generating capac

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12

Rasmussen, Ryan. "Investigation of stochastic optimization methods for operating reservoirs with snowmelt-dominant local inflows and limited storage capability in British Columbia during the spring freshet." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/51558.

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The reservoir operations model developed in this thesis is a stochastic dynamic programming decision support tool for the optimization of the operation of snowmelt-driven reservoirs with small storage flexibility hydropower systems during the spring freshet. The model operates under the objective of maximizing the value of electricity generation through electricity trading over a short-term planning period. Project and watershed data, stochastic inflows, and estimated electricity prices are used to calculate optimal expected turbine release policies over a short-term planning period. Results a

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13

Alipour, Mohammadhossein. "Applying the virtual structure of a risk-informed decision making framework for operating small hydropower reservoirs during high inflow events, case study : Cheakamus River system." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43587.

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Operating hydropower reservoirs with small storage capacity is a challenging task due to the fact that in a watershed system there usually exist multiple stakeholders with different and conflicting preferences and values. Consequently the process of planning for reservoir operation must be carried out with consideration of several, usually competing, objectives. This process becomes even more challenging during a high inflow or flooding event for three main reasons. First, the objective of minimizing adverse consequences of such an event is added to the set of objectives that the operator must

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14

Sázel, Jiří. "Střednědobé předpovědi průtoků vody v měrném profilu toku." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-234548.

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Thesis is aimed on creation of prediction model for releasing medium-term water stream flow forecasts. Created model create forecasts based on principal of finding most similar historical case. Usefulness of forecasting model is demonstrated for operation of one isolated reservoir in gauge profile Oslavany on river Oslava.

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15

Signoriello, Giuseppe Alessandro 1977. "Modelos matemáticos para previsão de vazões afluentes à aproveitamentos hidrelétricos." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265912.

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Orientador: Ieda Geriberto Hidalgo<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-25T19:15:52Z (GMT). No. of bitstreams: 1 Signoriello_GiuseppeAlessandro_M.pdf: 31629174 bytes, checksum: 1674c1adcccf93d9b3ee9711be3f709e (MD5) Previous issue date: 2014<br>Resumo: Este trabalho apresenta a comparação de dois modelos matemáticos desenvolvidos para prever vazões afluentes à usinas hidrelétricas. O objetivo é abordar os aspectos que determinam a qualidade do insumo fundamental para a programação da operação do

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16

Han, Wan-rong, and 韓宛容. "Apply Statistical-Downscaling Climate Forecasts for Estimating Shihmen Reservoir Inflows." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/66191775238781910522.

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碩士<br>國立中央大學<br>水文與海洋科學研究所<br>100<br>Resources in Taiwan not only are impotant for water resources management, but also paly as retention measures against flooding. In recent years, the need for domestic and industrial water have increased rapidly because of economic vigorous development, which result in rising stress of water supply especially in drought periods. Therefore, if reservoir inflows can be quantitatively forecasted beforehand, it will be helpful for issuing drought wqrning and making properly decision for water allocations. The Central Weather Bureau (CWB) issued short-term

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17

Tong, Hsin-ju, and 童新茹. "Linking Seasonal Climate Outlooks and Hydrological Models for Estimating Shihmen Reservoir Inflows." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/75034906933941375662.

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碩士<br>國立中央大學<br>水文與海洋科學研究所<br>99<br>The water resource is indispensable for human. The occurrence of drought event would cause damage to agriculture, industry, and economy. The impact of drought is really affect people. However, drought develops slowly and imperceptibly and may remain unnoticed for a long time. So it is very hard to construct a drought early warning system. While drought coming, it is too late to make the best decision. For these reasons, if we can predict the future reservoir inflow may manage the water resource earlier and reduce the impact of drought. The Central Weather Bu

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18

Chang, Ting-Wing, and 張廷暐. "Evaluate the Climate Change Impact on the Inflows of the Shihmen Reservoir." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/v3h2w4.

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碩士<br>國立中央大學<br>水文所<br>96<br>The enhancement of greenhouse effect has seriously affected the earth’s climate system, especially the issue of global warming. This warming is accompanied by significant changes in the hydrological cycles which subsequently bring impacts on water resources and increase difficulties on water resources allocations. The Shihmen Reservoir is one of the most important reservoirs in northern Taiwan. It provides water supplies to agricultural, industries, and domestics of the Taipei, Taoyuan, and Hsinchu counties, and plays an important role of flood amd drought mitigati

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19

Muchuru, Shepherd. "Predictability of seasonal rainfall and inflows for Water Resource Management at Lake Kariba." Thesis, 2015. http://hdl.handle.net/2263/44334.

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The Lake Kariba catchment area in southern Africa has one of the most variable climates of any major river basin, with an extreme range of conditions across the catchment and through time. The study characterized rainfall variability across the Lake Kariba catchment area, followed by describing prediction models for seasonal rainfall totals over the catchment and for inflows into Lake Kariba. The thesis therefore improved our understanding of rainfall variations over central southern Africa and provided evidence on how seasonal forecasts can be applied in order to potentially improve decision

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20

Lima, Luana Medeiros Marangon. "Modeling and forecast of Brazilian reservoir inflows via dynamic linear models under climate change scenarios." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-12-4687.

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The hydrothermal scheduling problem aims to determine an operation strategy that produces generation targets for each power plant at each stage of the planning horizon. This strategy aims to minimize the expected value of the operation cost over the planning horizon, composed of fuel costs to operate thermal plants plus penalties for failure in load supply. The system state at each stage is highly dependent on the water inflow at each hydropower generator reservoir. This work focuses on developing a probabilistic model for the inflows that is suitable for a multistage stochastic algorithm th

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21

Yu, Sin-Hong, and 余欣虹. "The Study for The Prediction of Inflows and Outflows of The Shihmen Reservoir by Using Artificial Neural Networks." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/88713547262607534067.

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碩士<br>國立雲林科技大學<br>工業工程與管理系<br>103<br>According to the literature, each Taiwanese receives only one-eighth of average rainfall per year in global. Esspaically the situation for Shihmen Reservoir which many compatriots depend on, that makes administration of water resource become more difficult and important. Due to the flow of reservoir is one of the important foundation data for decision management, the purpose of this study is to establish the prediction mode of flow to aid decision management. For administration, this study looks forward to reduce extra resources wasting of scheduling or pur

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22

Lin, Chih-Hung, and 林致弘. "Uncertainty analysis of reservoir inflow estimation-A case study in Shihmen reservoir." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/ced5ak.

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碩士<br>國立臺灣大學<br>生物環境系統工程學研究所<br>107<br>Due to the limitation of topography and climatic conditions, Taiwan has uneven spatial distribution during rainfall. In Taiwan, only about 20% of water can be used by people, so the distribution of water resources has become an important issue for the government. Due to the shortage of water resources, the reservoir is the most important water conservancy facility in Taiwan. If it can provide the simulated value of the future reservoir inflow, then the regulation of water resources will be of great help. Therefore, it is necessary to establish a reservoir

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23

Hsu, Chih-Cheng, and 許志誠. "Seasonal Revising of Reservoir Inflow Grey Forecast Model." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/24701521881297092303.

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碩士<br>中興大學<br>土木工程學系所<br>95<br>Taiwan is with dramatic variations both in spatial and temporal scale,80% rainfall concentration in wet season is June to October. The plentiful rainfall is in June of raining season and August of typhoon season. The rainfall diminution in dry season is November to next May. Thus, efficient water resources management becomes the main concern. The purpose of this thesis is to establish inflow forecast model from 10-day inflow of Shihman Reservoir and to improve the forecast model from hydrologic data deviation, extraordinary 10-day inflow, time lag of Grey forecas

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Jeng, Jia-Haur, and 鄭家豪. "Improved back-propagation networks for reservoir inflow forecasting." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/81929178641702467805.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>96<br>The efficiency is an important issue for neural networks-based models, but the issue has received little attention in the hydrologic domain. Back-propagation networks (BPNs) are the most frequently used convectional neural networks (NNs). However, BPNs are trained by the error back-propagation algorithm which is a very time-consuming iterative process. To improve the efficiency, improved BPNs which are trained by a novel query learning approach are proposed. The proposed query learning approach is capable of selecting informative data from all training dat

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Chen, Chien-Hong, and 陳建宏. "The Influence of Rainfall Factor on Reservoir Inflow Forecasting." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/37061468465019297180.

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26

DING, CHONG-FENG, and 丁崇峰. "Study on the persistent phenomenon for reservoir inflow series." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/72293511218594402388.

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27

Shieh, H. J., and 謝宏智. "Inflow Prediction of Reservior System During Dry Season." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/15930640946996540250.

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28

"TROPHIC STATE AND FACTORS RELATING TO PHYTOPLANKTON COMMUNITY COMPOSITION AND DISTRIBUTION IN LAKE DIEFENBAKER, SASKATCHEWAN, CANADA." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-09-2258.

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Planktonic algae are useful as indicators of water quality because their composition and distribution reflects environmental condition in lakes. Therefore, understanding their dynamics can aid certain water quality management goals. Lake Diefenbaker is a large mesotrophic reservoir in the Canadian Prairies. Approximately 98 % of its inflow is from the South Saskatchewan River. The composition and ecology of the phytoplankton community has not been reported comprehensively since the 1980s. This is a potential problem for a reservoir with multiple end users. Therefore, I collected epilimnetic wh

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Liu, Min-wu, and 劉敏梧. "A Study on Forecast Model of Reservoir Inflow during Drought." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/72294904115153666482.

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碩士<br>國立中興大學<br>土木工程學系<br>92<br>Taiwan is a rainfall abundant country, but the rainfall distribution is uneven both in time and space whenever and wherever drought may occur in ten years return period. Unexpectedly however, droughts came more frequently in recent two years, posing severe impacts on water resources utilization. Thus, beside water resources development, an effective way of water resources management becomes one of the major concerns in water resources utilization. In other words, the operation of reservoirs should be required more rational based crucially on the favorable hydrol

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Chang, Chia-Chuang, and 張家銓. "Improved Self-organizing Linear Output Map for Reservoir Inflow Forecasting." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/25754392471904807349.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>97<br>Based on self-organizing linear output map (SOLO), effective hourly reservoir inflow forecasting models are proposed. As compared with back-propagation neural network (BPNN) which is the most frequently used conventional neural network (NN), SOLO has four advantages: (1) SOLO has better generalization ability; (2) the architecture of the SOLO is simpler; (3) SOLO is trained much more rapidly, and (4) SOLO could provide features that facilitate insight into underlying processes. An application is conducted to clearly demonstrate these four advantages. The re

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Lin, Szu-ta, and 林思達. "Modification of the GWLF Model to Simulate the Feitsui Reservoir Inflow." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/5q6mx5.

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碩士<br>國立中央大學<br>水文所<br>97<br>Although Taiwan has subtropical climate with annual rainfall of more than 2500 mm, limited water resource is still an issue due to short and steep rivers causing relative short residence time of surface runoffs. Reservoirs were often built to fulfill requirements of water resources and provide flood mitigation and power generation. The Feitsui Reservoir has been operated since 1987 and is the most important water resources for the 4 million people lived in the Taipei metropolitan. The original GWLF model was first applied to simulate the inflow of the Feitsui R

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Kung, Wen-Jui, and 龔文瑞. "Assessment of Inflow for the Transbasin Diversion Tunnel of Tsengwen Reservoir." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/65754754189729258455.

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碩士<br>國立成功大學<br>資源工程學系碩博士班<br>93<br>A computer program, MODFLOW-SURFACT, is applied to simulate the inflow of the east part of transbasin diversion tunnel of Tesengwen Reservoir during tunnel excavation. The tunnel is located in the complex geological structures with deep depth cover rocks and water pressure. The field data is investigated and collected in order to establish two-dimension and three-dimension hydrogeology model and to estimate the inflow under the several specific conditions, for instance, single tunnel advance rate, steady and accumulate condition etc. The simulational results

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Chen, Chien-hung, and 陳建宏. "Pollutant load estimation of reservoir inflow during the period of storms." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/74975774382698111752.

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碩士<br>國立臺灣大學<br>土木工程學系研究所<br>86<br>Reservoir eutrophication in Taiwan is getting severe, due to the overdevelopm ent of catchment. Water quality data in Taiwan is evidently absent during peri ods of flooding and high flows. For the possible controlof water quality, an e fficient method of pollutant load estimation is needed to make water resource conservation and enduring use become possible.The study of pollutant load est imation was concentrated on the absorbable material, such as total phosphorus and t

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Huang, Yi-Chi, and 黃怡綺. "Study of Applying Time Series Analysis methods on Simulating of Inflow of Reservoir—WuSeh Reservoir as an Example." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/73634521229065183225.

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碩士<br>國立中興大學<br>水土保持學系所<br>95<br>The supply and demand of water resource is imbalance in Taiwan, if the reservoir management agency can predict accurately the inflow of reservoir from its up stream river, it should be helpfull for regulation and control of the reservoir. This research collects the historical daily and 10-day inflow of reservoir watersheds, and uses time series analysis methods, its theory is already to be developed completely, to analyse its periodicity and secular trend separately, by way of autoregressive integrated moving average (ARIMA) models infer optimization parameter,

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Zarea, Marwan Annas H. "A Comprehensive Evaluation of Reservoir Inflow and Wellbore Behavior in Intelligent Wells." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8367.

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Intelligent well technology is a relatively new technology that has been adopted by many operators in recent years to improve oil and gas recovery. Because of its complexity, accurate modeling of the reservoir and wellbore performance in the multilateral well application is critical to optimize well production. Little work has been performed on understanding the flow behavior through the main component of the intelligent well, the inflow control valve. This study presents a comprehensive model to quantify the reservoir and well performance in the horizontal laterals of the intelligent multilat

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Lo, Ying-Chin, and 羅英秦. "Multi-step-ahead reservoir inflow forecasts using neural networks with ensemble method." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/93972619180271311873.

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碩士<br>國立臺灣大學<br>生物環境系統工程學研究所<br>101<br>Due to unique geographical location of Taiwan, an average of 3.5 typhoons attack Taiwan each year. In addition, the particular topographical terrains of Taiwan make rivers short and steep such that rivers rapidly flow from catchments to reservoirs within a few hours during typhoon events. It will be very helpful and useful for reservoir operation management if reservoir inflow information can be provided in the next few hours after typhoons initially arrive. This study investigates the rainfall-runoff process of reservoir catchment by using two different

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Hsu, Yu-Lung, and 許育榮. "Prediction and Supplement of Hu-Tou Pei Reservoir Inflow using Precipitation Data." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/93791325848219431332.

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碩士<br>國立屏東科技大學<br>土木工程系所<br>98<br>Hu-Tou-Pei reservoir, located in Tainan County, Taiwan, is managed by the Chia-Nan Irrigation Association. The reservoir is of medium scale and the catchment area is 715 ha. Unfortunately, there is no precipitation station and the water intake monitoring records are from the upstream reservoir catchment area. The relationship between the amount of reservoir water intake and the rainfall in the catchment area is determined using rainfall records from the spillway; the spillway discharge is used to calculate the water intake. In this study, the reservoir was re

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Li, Yen-Chuan, and 李晏全. "Monthly and Seasonal Inflow Forecasting of Shihmen Reservoir during the Dry Seasons." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/37353739790513337359.

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碩士<br>國立成功大學<br>水利及海洋工程學系碩博士班<br>94<br>If the reservoir inflows can be forecasted precisely beforehand, they may benefit the reservoir operation and management in Taiwan. The long-term inflow forecasting system of reservoir combines a continuous rainfall-runoff model with the long-term weather outlook provided by the Central Weather Bureau to forecast one-month and three -month ahead inflows with the ten-day and one-month time steps. There are several tasks in the present study, including (1) the developing of a rainfall-runoff model based on the daily time step, (2) the developing of ten-day

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Kuo, Hsiu-yun, and 郭秀筠. "Studies on Reservoir Inflow Estimating Model by Using the Radar-based Quantitative Precipitation." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/59711235990950670536.

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碩士<br>淡江大學<br>水資源及環境工程學系碩士班<br>103<br>In recent years, the typhoons and extreme rainfall days increases, the precipitation is unsteady in different places and during different seasons, and it usually concentrates in moist season. The typhoon causes results in severe flood inundation. During the typhoon hit, using the rainfall intensity data of typhoon flood events, to quickly grasp the reservoir inflow, it is expected that results of this study could be used for online reservoir operation in the future. In this study, we focus on the Shihmen reservoir upstream catchment area, using the relatio

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Chou, Yang-Ching, and 周揚敬. "Using support vector machines to improve reservoir inflow forecasting during typhoon-warning periods." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/44933898752793153567.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>96<br>In this paper, effective reservoir inflow forecasting models based on the support vector machine (SVM), which is a novel kind of neural networks (NNs), are proposed. Based on statistical learning theory, the SVMs have three advantages over back-propagation netwoks (BPNs), which are the most frequently used convectional NNs. Firstly, SVMs have better generalization ability. Secondly, the architectures and the weights of the SVMs are guaranteed to be unique and globally optimal. Finally, SVM is trained much more rapidly. An application is conducted to clearly de

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Wu, Chi-Wei, and 伍啟維. "Investigation of the Reservoirs Inflow Sediment and Water Quality for Sustainable Use." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/60742606558492475267.

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碩士<br>國立中興大學<br>水土保持學系<br>88<br>The purpose of this research is to estimate reservoir inflow sediment yield and water quality. Applying the conception of sustainable life, the rational interval of the inflow sediment can be anticipated. The result should be useful in sediment control of reservoirs. Sediment yield model in reservoir watershed is based on the soil erosion index model. Water quality model contains the estimation of the phosphorus loading and the phosphorus mass balance model, which can analyze the effect of inflow sediment raise eutrophication. Considering the relation

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Wu, Lei-Ken, and 吳雷根. "A study on Long-term Inflow Forecasting of Tsengwen Reservoir during the Dry Seasons." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/qaevh8.

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碩士<br>國立成功大學<br>水利及海洋工程學系碩博士班<br>92<br>Long-term inflows of reservoir form upstream catchment are important information for reservoir operation. If the inflows of reservoir can be forecasted precisely beforehand, that may benefit the reservoir operation and management. Therefore, we attempt to develop a long-term inflow forecasting system of reservoir during the dry seasons and apply the system in the upstream catchment of Tsengwen reservoir, which is to support the reservoir management for operation decision and drought warning. 　　The long-term inflow forecasting system of reservoir that com

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Nass, Maria A. "Inflow Performance Relationships (IPR) for Solution Gas Drive Reservoirs -- a Semi-Analytical Approach." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8028.

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This work provides a semi-analytical development of the pressure-mobility behavior of solution gas-drive reservoir systems producing below the bubble point pressure. Our primary result is the "characteristic" relation which relates normalized (or dimensionless) pressure and mobility functions. This formulation is proven with an exhaustive numerical simulation study consisting of over 900 different cases. We considered 9 different pressure-volume-temperature (PVT) sets, and 13 different relative permeability cases in the simulation study. We also utilized 7 different depletion scenarios. Th

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Cheng, Guo-rong, and 程國榮. "Applications of Monthly and Annual Water Balance Models for Estimating Inflows of the Shihmen and Feittsui Reservoirs." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/41801264052156714202.

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碩士<br>國立中央大學<br>水文與海洋科學研究所<br>100<br>Both the Shihmen and Feitsui Reservoirs are the most important reservoirs in northern Taiwan providing water resources for domestic, industrial and agricultural usages. Booming social and economic developments in recent years requires increasing demands of water resources. On the other hand, climate variability brought challenges on reservoir managements. Predicting long-term variability and characteristics of reservoir inflows are essential to water resources planning and managements, which are not necessary to be estimated by distributed hydrological mode

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Cheng, Chun-Teng, and 鄭竣騰. "A Study of Flood and Drought Characteristic Using HHT─A Case Study of Shihmen Reservoir Inflow." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/sbsw9b.

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碩士<br>淡江大學<br>水資源及環境工程學系碩士班<br>101<br>The influence of the extreme climate on rainfall and flow in time and space distribution are becoming less equal, wet period whether there is an enhanced flow of the possibility of flooding if there is increasing trend year by year; another phenomenon is more frequent droughts, continuous drought whether the time getting longer and longer. In order to understand the extreme weather in Taiwan why the characteristics of flood and drought, in this study, Shihmen Reservoir inflow into annual maximum daily flow, total flow in the wet season, the annual number o

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Kuo, Sui-An, and 郭隨安. "Long lead-time reservoir inflow forecasting by adapting a rainfall-runoff model with ensemble precipitation forecasts." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/j78qp6.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>106<br>Taiwan is located on the main track of western Pacific typhoons, and approximately three to four typhoons hit Taiwan per year. Typhoons accompanied by heavy rainfall often results in a huge amount of runoff, which causes downstream floods and induces great disasters. Meanwhile, the reservoir operator should assess flood control operations carefully. The dam security and downstream residents are both taken into consideration. In this case, prerelease for real time flood operation is important. Accurate reservoir inflow forecasting with enough lead time helps t

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Tang, Yung-Hsiang, and 唐雍翔. "The Effects of Weather and Inflow Water Temperature on the Eutrophic Condition of Shin-Shan Reservoir." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/47131027852451185863.

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碩士<br>國立臺灣大學<br>環境工程學研究所<br>103<br>Shin-Shan Reservoir located at Anle Dist., Keelung City in Taiwan is an off-channel reservoir, providing water for people living in Keelung City and surrounding area of New Taipei City. In recent years, Shin-Shan Reservoir had heavy algal blooms in summer when the water body was stratified. In this study, we adopted CE-QUAL-W2 model and integrated the buoyant jet mechanism into it to simulate the water quality of Shin-Shan Reservoir. The relationships between inflow rate, temperature and the degree of eutrophication were investigated, as well as those between

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Hsu, Tseng-Fa, and 許增發. "Ecological Impact of Check Dams on Fish Distribution in the Major Inflow of Tseng-Wen Reservoir." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/zu4fk5.

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碩士<br>國立成功大學<br>水利及海洋工程學系專班<br>92<br>The Tsengwen Reservoir, located in the Southern Taiwan, is a multi-objectives utility Reservoir. The upstream rivers of its watershed have caused severe sediment disasters. Over the years, one of the basic prevention methods has been to build many check dams along rivers. In the early days, people raised the height of the dam to increase the space for soil storage. To protect the dam embankment in upstream areas and improve the stability of all tributaries, the water resources management authority planned and built a series of check dams along the major

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Wu, Sheng-Hui, and 吳聲暉. "The Study on the Relation between Seepage of the Shiue-Shun Tunnel and the Inflow of the Fei-Tsuei Reservoir." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/32495856102321700481.

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碩士<br>國立成功大學<br>資源工程學系碩博士班<br>93<br>Abstract 　Fei-Tsuei Reservoir is the main source of water supply in Taipei. The purposes of this study were to investigate the impact of the excavation of Shiue-Shun tunnel on water supply. The base-flow record method was used to estimate groundwater recharge and to separate base-flow from daily river inflow at the watershed of Fei-Tsuei Reservoir. The diversity of water amount due to the change of monthly base-flow and the excavation of Shiue-Shun tunnel was also discussed. The 2-D and 3-D hydrogeological models were established for the watershed of Fei-T

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Yao, Chung-Kai, and 姚重愷. "Simulation and Analyses of the Effects of Hypolimnetic Aeration and Inflow Water Temperature on the Eutrophic Condition of Shin-Shan Reservoir by Using CE-QUAL-W2 Water Quality Model." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/98418784514003597230.

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碩士<br>國立臺灣大學<br>環境工程學研究所<br>101<br>During the past few years, Shin-Shan Reservoir, an off-channel reservoir and major water source for Keelung city and a part of Taipei metropolitan area, became seriously eutrophic due to elevated pollutant loading and possibly more frequent extreme-climate events. In this study, CE-QUAL-W2 water quality model was used to evaluate the effects of hypolimnetic aeration on water quality of Shin-Shan reservoir and to investigate the impacts of the higher temperature of inflow water than in reservoir during unusual climate events on the water quality. The model wa

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