scholarly journals Energia Eólica no Brasil: Evolução, Desafios e Perspectivas

2019 ◽  
Vol 10 (1) ◽  
pp. 124-142 ◽  
Author(s):  
Rodrigo Jambeiro Pinto ◽  
Vivianni Marques Leite dos Santos
Keyword(s):  
Wind Energy ◽  
Transmission Lines ◽  
Power Plants ◽  
Fossil Fuels ◽  
Energy Matrix ◽  
Wind Power Plants ◽  
Long Run ◽  
World Energy ◽  
Alternative Sources ◽  
National Industry

The significant concentration of the world energy matrix in polluting sources and prices subject to instabilities, such as fossil fuels, has raised the search for countries by technologies and alternative sources, among them wind energy, as a way to increase security in energy supply and reduce the emission of gases responsible for the greenhouse effect. Thus, through a bibliographical research, the objective of this work is to systematize the potential of wind energy, through a study of evolution, challenges and perspectives, consolidate in the Brazilian energy matrix and contribute, in the long run, to a greater decentralization of and less dependence on non-renewable sources. In this sense, Brazil, benefited by natural factors and the development of the national industry, has favorable conditions for the exploration of this form of energy and has experienced great evolution, with wind energy being among the fastest growing in Brazil and being the second most competitive source of energy Brazilian energy matrix. However, the need to improve the logistics infrastructure, expand transmission lines, improvement in the planning of the start-up dates of wind power plants, as well as create a new policy to encourage renewable energies and make greater investments in research and development appear as important goals to be achieved so that wind energy can in fact consolidate in the national scenario.

scholarly journals PEMANFAATAN POTENSI ANGIN LAUT PENGGERAK MESIN PERAHU NELAYAN PENGGANTI MESIN BERTENAGA MINYAK

2014 ◽  
Vol 12 (1) ◽  
pp. 62-64
Author(s):  
Budi Prijo Sembodo ◽  
Rony Haendra Fora ◽  
Sri Widyastuti
Keyword(s):  
Wind Energy ◽  
Power Plants ◽  
Fossil Fuels ◽  
Electrical Energy ◽  
Engine Oil ◽  
Development Economic ◽  
Wind Power Plants ◽  
The Right ◽  
Engine Method ◽  
Economic Improvement

Wind Power Plants convert wind energy into electrical energy using wind turbines orwindmills. The problem is when in season Mitra wind / west season , fishermen catching crabs cannot directly capture crabs . The process can wait for days , until the right time to spread the net.When should wait for the weather improves fuel becomes a major problem . Fishermen do nothave the ability to purchase fuel in bulk .Results KKN PPM Theme : minimation   fuel problem ,known as fossil fuels , the use of the traditional mindset change boat engine oil into the enginefueled with energy saving environmentally friendly energy alternatives that are cheaper , achievededucation for sustainable development , economic improvement occurred residents by selling theproducts of wind energy boat engine. Method in empowerment , operational steps to correct theproblem, the volume of work in the form of JKEM and the total volume of work

scholarly journals On the effect of spatial dispersion of wind power plants on the wind energy capacity credit in Greece

2008 ◽  
Vol 3 (1) ◽  
pp. 015003 ◽  
Author(s):  
George Caralis ◽  
Yiannis Perivolaris ◽  
Konstantinos Rados ◽  
Arthouros Zervos
Keyword(s):  
Wind Energy ◽  
Wind Power ◽  
Power Plants ◽  
Spatial Dispersion ◽  
Energy Capacity ◽  
Wind Power Plants

New Concept of CO2 Removal Technologies in Power Generation, Combined With Fossil Fuel Recovery and Long Term CO2 Sequestration

2000 ◽  
Author(s):  
Ph. Mathieu ◽  
R. Dubuisson ◽  
S. Houyou ◽  
R. Nihart
Keyword(s):  
Co2 Sequestration ◽  
Power Plants ◽  
Fossil Fuels ◽  
Added Value ◽  
Co2 Injection ◽  
Co2 Removal ◽  
Methane Recovery ◽  
Optimum Pressure ◽  
Long Run ◽  
Removal Technologies

In this paper, the mentioned cycle has been transformed in a CO2 regenerative Ericsson-like cycle and therefore is named E-MATIANT. The removed CO2 can still be available at a pressure higher than the critical one (73 bar). When optimising the cycle, the calculated optimum pressure will be around 60 bar; this makes the technical issues easier to deal with than when using a supercritical fluid, namely the material strains and corrosion behavior. A sensitivity analysis is performed with respect to the CO2 delivery pressure in order to evaluate the performance changes. The fuel flexibility is an important asset of the newly designed cycle: mixtures of CO and H2 produced either in gasification or steam reforming processes can indeed be burnt in the combustion chamber. In a future work, the combination of a solid oxide fuel cell (SOFC) and this cycle both fed by a CO and H2 mixture will be considered as an option for the improvement of the global efficiency. If not fixed in a chemical or biological system, the delivered CO2 can be used in industry or in the enhancement of fossil fuels recovery from their deposits, with a marginal compression consumption work. In this paper, CO2 injection is used to enhance methane recovery from coal seams by some 20 to 30%, in comparison with water pumping. The depleted seam can afterwards be used as the host site for long run CO2 sequestration. As a conclusion, the combination of quasi-zero emission power plants with CO2 geological storage and enhanced fuel recovery provides a CO2 flow, otherwise considered as a waste or a byproduct, with an exergetic and a commercial added value. This makes this option a serious alternative to other CO2 control technologies.

scholarly journals A Review on Wind Turbine and Wind Generator Used in WECS

2019 ◽  
pp. 01-04
Author(s):  
Nitish Kumar Singh ◽  
Dashrath Kumar
Keyword(s):  
Energy Source ◽  
Wind Energy ◽  
Wind Turbine ◽  
Power Quality ◽  
Power Plants ◽  
Harmonic Distortion ◽  
Energy Resource ◽  
Electrical Energy ◽  
Wind Power Plants ◽  
Core Energy

The applications of wind energy develop much rapidly than the other renewable resources such as solar, geothermal and so on in the 21st century. It becomes the third core energy resource following non-conventional fuels as oil and chemical. Electrical energy generated by wind power plants is the best ever developing and most promising renewable energy source. The wind is a clean, free and limitless energy source. Wind Energy Generation Systems (WECS) are confront with increasing demands for power quality and harmonic distortion control. With the advance in power electronics technology, the fast growth of variable speed WECS is now witness. However, the power quality still remains an important issue to be addressed thoroughly by researchers. This paper presents a comparative study on grid connected WECS having two different Wind Turbine Generator Systems (WTGS) using DFIG and PMSG.

scholarly journals Applying the permissive overreaching transfer Trip of SEL 311L distance relay to protect the transmission line

2020 ◽  
pp. 19-23
Author(s):  
Pham Van Kien Pham
Keyword(s):  
Transmission Lines ◽  
Power Plants ◽  
Power Transmission ◽  
Electronic Device ◽  
Power Transmission Lines ◽  
Wind Power Plants ◽  
Fast Processing ◽  
Clearing Time ◽  
Intelligent Electronic Device ◽  
The Stability

Vietnam\'s electricity system has been increasingly invested in development, meeting the growth rate of energy consumption demand in all socio-economic aspects. In particular, the energization and commission of solar and wind power plants greatly affect the stability and safety of the Vietnam power system. To improve the system\'s stability when incidents occur, one of the current solutions is to coordinate relay calibration settings which have a rapid reaction time at all voltage levels. To meet the above requirements, an option is to use Intelligent Electronic Device (IED) with fast processing speed, reduced latency, and multiple functions with intelligent algorithms. In addition, the solution to coordinate the protection areas between IEDs is being concerned. This paper presents the coordination of Permissive Over-Reaching Transfer Trip (POTT) interlock function of SEL 311L relay for power transmission lines to reduce the fault clearing time compared to the traditional calculation method.

scholarly journals Use of Hydrogen as Fuel: A Trend of the 21st Century

Energies ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 311
Author(s):  
Charles Bronzo Barbosa Farias ◽  
Robson Carmelo Santos Barreiros ◽  
Milena Fernandes da da Silva ◽  
Alessandro Alberto Casazza ◽  
Attilio Converti ◽  
...  
Keyword(s):  
Alternative Energy ◽  
Fossil Fuels ◽  
Clean Energy ◽  
Maximum Efficiency ◽  
Hydrogen Fuel ◽  
Energy Matrix ◽  
Major Goal ◽  
Specific Chemical ◽  
World Energy ◽  
Potential Use

The unbridled use of fossil fuels is a serious problem that has become increasingly evident over the years. As such fuels contribute considerably to environmental pollution, there is a need to find new, sustainable sources of energy with low emissions of greenhouse gases. Climate change poses a substantial challenge for the scientific community. Thus, the use of renewable energy through technologies that offer maximum efficiency with minimal pollution and carbon emissions has become a major goal. Technology related to the use of hydrogen as a fuel is one of the most promising solutions for future systems of clean energy. The aim of the present review was to provide an overview of elements related to the potential use of hydrogen as an alternative energy source, considering its specific chemical and physical characteristics as well as prospects for an increase in the participation of hydrogen fuel in the world energy matrix.

Life Cycle Assessment of Modern Wind Power Plants

2010 ◽  
Author(s):  
Hannes M. Hapke ◽  
Karl R. Haapala ◽  
Zhaohui Wu ◽  
Ted K. A. Brekken
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Wind Power ◽  
Environmental Sustainability ◽  
Power Plants ◽  
Wind Farm ◽  
Fossil Fuels ◽  
Environmental Benefits ◽  
Electricity Production ◽  
Wind Power Plants

Power generation for the existing electrical grid is largely based on the combustion of fossil fuels. Global concerns have been raised regarding the environmental sustainability of the system due to life cycle impacts, including land losses from fuel extraction and impacts of combustion emissions. An approach to reduce carbon emissions of fossil fuel-based energy employs the conversion of wind energy to electrical energy. The work presented describes modern wind power plants and provides an environmental assessment of a representative wind park from a life cycle perspective. The empirical analysis uses commercially available data, as well as information from an existing wind power plant. The life cycle assessment (LCA) study for a modern wind farm in the northwestern U.S. found that environmental benefits of avoiding typical electricity production greatly outweigh the impacts due to wind turbine construction and maintenance. Effects of component reliability, varying capacity factors, and energy portfolio are explored.

Transient Stability Improvement of a System Connected with Wind Energy Generators

2017 ◽  
Vol 18 (5) ◽  
Author(s):  
S. Surender Reddy ◽  
Kishore Prathipati ◽  
Young Hwan Lho
Keyword(s):  
Control System ◽  
Power System ◽  
Wind Energy ◽  
Wind Power ◽  
Power Plants ◽  
Transient Stability ◽  
Induction Machines ◽  
Pitch Control ◽  
Wind Power Plants ◽  
The Stability

AbstractThis paper proposes a methodology to improve the transient stability (TS) of a system with wind energy generators. Induction machines are used widely as generators in the wind power plants. As these induction machines also have the stability problem like other synchronous machines, it is very important to analyze the TS of a system including the wind power plants. In this paper, the simulations and analysis of TS of power system including the induction generators during the short circuit fault conditions are carried out. The effect of pitch angle control on the stability of power system is analyzed. From the simulation results, it can be observed that the pitch control system which prevents the excess wind speed has the significant effect on the TS enhancement of the system. It can also be observed that the controller gain and time constant values have considerable effect on the pitch control system.

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