نتایج جستجو برای: hydroelectric power plants

تعداد نتایج: 670302  

2011
Mark Z. Jacobson Mark A. Delucchi

Climate change, pollution, and energy insecurity are among the greatest problems of our time. Addressing them requires major changes in our energy infrastructure. Here, we analyze the feasibility of providing worldwide energy for all purposes (electric power, transportation, heating/cooling, etc.) from wind, water, and sunlight (WWS). In Part I, we discuss WWS energy system characteristics, cur...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2015
T M Sanaiotti T G Junqueira V Palhares F H Aguiar-Silva L M P Henriques G Oliveira V Y Guimarães V Castro D Mota D F Trombin D N A Villar K M Lara D Fernandes L Castilho E Yosheno R M Alencar L Cesca S M Dantas T O Laranjeiras P C Mathias C V Mendonça

In the Brazilian Amazon, two monospecific genera, the Harpy Eagle and Crested Eagle have low densities and are classified by IUCN as Near Threatened due to habitat loss, deforestation, habitat degradation and hunting. In this study, we evaluate occurrence of these large raptors using the environmental surveys database from Belo Monte Hydroelectric Power Plant. Integrating the dataset from two m...

Journal: :Journal of Fluids Engineering 1981

2003

1.1.1 Electric power can be easily and efficiently transported to locations far from production centers and converted into desired forms (e.g., mechanical, thermal, light, or chemical). Therefore, electric power can satisfy the requirements of a variety of users (e.g., factories, houses, offices, public lighting, traction, agriculture), widely spread around the intended territory. On the other ...

2010
Ieda G. Hidalgo Darrell G. Fontane Marcelo A. Cicogna João E. G. Lopes

This paper presents the impact of the data quality from hydroelectric plants in the analysis of their past operation. A middle term simulation tool has been applied to Brazilian hydroelectric plants which are under the coordination of the Electric System National Operator (ONS). In order to analyze the impact of the data quality this simulator is used to reproduce the past operation of the plan...

2010
Warren Katzenstein Emily Fertig Jay Apt

We present the first frequency-dependent analyses of the geographic smoothing of wind power’s variability, analyzing the interconnected measured output of 20 wind plants in Texas. Reductions in variability occur at frequencies corresponding to times shorter than 24 h and are quantified by measuring the departure from a Kolmogorov spectrum. At a frequency of 2.8 10 4 Hz (corresponding to 1 h), a...

Journal: :Energies 2022

One of the most important measures taken in reducing impact climate change resulting from global warming is production energy clean and renewable resources. Hydroelectric power plants are leading sources. In this study, effects on hydroelectric plants, a source, have been investigated. Dogancay I II Power Plants, which built Sakarya River located basin Turkey, was selected as study area. Moreov...

Journal: : 2023

Hydroelectric power plants are environmental-friendly as they renewable energy sources and make great contributions to the economies. In addition, in state of insurance electricity network, since can respond demands network a very short time. this study, effect speed governors dispense valve has been added classical control mechanism order accurately predict reaction hydroelectric load requirem...

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