نتایج جستجو برای: control reneabel energy hydropower

تعداد نتایج: 1938621  

2011
Indrani Pal Upmanu Lall Andrew Robertson Mark A Cane Rajeev Bansal

#" !$" Snowmelt dominated streamflow of the Western Himalayan rivers is an important water !%" resource during the dry pre-monsoon months to meet the irrigation and hydropower needs !&" in northern India. This study is one of the first to look at the seasonal prediction of melt!'" dominated total inflow into the Bhakra Dam in northern India, based on statistical !(" relationships with meteorolo...

2009
Alan F. Hamlet Marketa M. Elsner

Climate strongly affects energy supply and demand in the Pacific Northwest (PNW) and Washington State (WA). We evaluate potential changes in the seasonality and annual amount of PNW hydropower production and changes in energy demand in a warming climate by linking simulated streamflow scenarios produced by a hydrology model to a simulation model of the Columbia River hydro system. Energy demand...

2003
Nguyen Le Truong

Vietnam is a developing country with an ever increasing power demand. The development of power sources are limited mainly to large central power plants using hydropower and traditional fossil fuels. Agriculture still plays a vital role in production activities generating high quantity of residues (biogas, straw, rice husk, etc..). These biomass residues could be a potential source for energy su...

2014
Philipp Emanuel Hirsch Sebastian Schillinger Hannes Weigt Patricia Burkhardt-Holm

Water level fluctuations in lakes lead to shoreline displacement. The seasonality of flooding or beaching of the littoral area affects nutrient cycling, redox gradients in sediments, and life cycles of aquatic organisms. Despite the ecological importance of water level fluctuations, we still lack a method that assesses water levels in the context of hydropower operations. Water levels in reserv...

2016
Bowei Hu Jingtao Sun Lijie Ding Xinyu Liu Xiaoru Wang Ying-Yi Hong

Abstract: At present, the common practice in the power system of China is to represent the small and medium hydropower generator group as a negative load. This paper presents a method to build a dynamic equivalent model of the hydropower generator group using a 3rd order generator model and a static characteristic load model. Based on phasor measurements in the tie line which connects to the mo...

2013
T. R. Neelakantan

Standard operating policy and hedging policies are commonly used for reservoir operation for municipal or irrigation water supply. Application of these policies to hydropower reservoir operation is complex. In this paper, new standard operating policies and standard hedging policy are proposed for hydropower reservoir operation. The newly proposed policies were applied to the operation of Indir...

2016
Byman H. Hamududu Juan Ignacio Pérez-Díaz

Climate change is altering hydrological processes with varying degrees in various regions of the world and remains a threat to water resources projects in southern Africa. The likely negative impacts of changes in Africa may be worse than in most other regions of the world. This study is an evaluation of the possible impacts of climate change on water resources and hydropower production potenti...

2013
M. L. Ruz J. Garrido S. Fragoso

The improvement of the exploitation of energy resources in power stations is a topic of growing interest. However, experimentation costs in order to increase productivity are very high, either because the possible equipment to change would be very expensive, or simply, because the plant would have to stop. In such cases, the simulation is a fast and cheap way to analyze the power plant behavior...

2012
Robert I. McDonald Julian D. Olden Jeffrey J. Opperman William M. Miller Joseph Fargione Carmen Revenga Jonathan V. Higgins Jimmie Powell

Rising energy consumption in coming decades, combined with a changing energy mix, have the potential to increase the impact of energy sector water use on freshwater biodiversity. We forecast changes in future water use based on various energy scenarios and examine implications for freshwater ecosystems. Annual water withdrawn/manipulated would increase by 18-24%, going from 1,993,000-2,628,000 ...

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