scholarly journals Renewable Energy Sources for Isolated Self-sufficient Microgrids: Comparison of Solar and Wind Energy for UAE

2016 ◽  
Vol 103 ◽  
pp. 413-418 ◽  
Author(s):  
Sayyad Basim Qamar ◽  
Isam Janajreh
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Renewable Energy Sources ◽  
Energy Sources

scholarly journals Wind Data Analysis and Wind Flow Simulation Over Large Areas

2014 ◽  
Vol 10 (1) ◽  
pp. 38-45
Author(s):  
Angel Terziev ◽  
Ivan Antonov ◽  
Rositsa Velichkova
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Wind Flow ◽  
Energy Potential ◽  
Wind Potential ◽  
Wind Energy Potential ◽  
The Impact

Abstract Increasing the share of renewable energy sources is one of the core policies of the European Union. This is because of the fact that this energy is essential in reducing the greenhouse gas emissions and securing energy supplies. Currently, the share of wind energy from all renewable energy sources is relatively low. The choice of location for a certain wind farm installation strongly depends on the wind potential. Therefore the accurate assessment of wind potential is extremely important. In the present paper an analysis is made on the impact of significant possible parameters on the determination of wind energy potential for relatively large areas. In the analysis the type of measurements (short- and long-term on-site measurements), the type of instrumentation and the terrain roughness factor are considered. The study on the impact of turbulence on the wind flow distribution over complex terrain is presented, and it is based on the real on-site data collected by the meteorological tall towers installed in the northern part of Bulgaria. By means of CFD based software a wind map is developed for relatively large areas. Different turbulent models in numerical calculations were tested and recommendations for the usage of the specific models in flows modeling over complex terrains are presented. The role of each parameter in wind map development is made. Different approaches for determination of wind energy potential based on the preliminary developed wind map are presented.

scholarly journals Solar and Wind Energy Based Microgrid : Study of Architecture's Potential at Coastal Areas in Bangladesh

2018 ◽  
Vol 17 (2) ◽  
pp. 31-36
Author(s):  
Abir Muhtadi ◽  
Ahmed Mortuza Saleque ◽  
Mohammad Abdul Mannan
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Fossil Fuel ◽  
Renewable Energy Sources ◽  
Coastal Areas ◽  
Real Case ◽  
Extension Study ◽  
Energy Sources ◽  
Case Scenario ◽  
Geographical Locations

Due to sheer dependency upon fossil fuel sources, Bangladesh as a country is not free from numerous negative aspects. Country’s requirement for a certain portion of power be generated from renewable energy sources is due and required renewable energy target (RET) needs to be fulfilled. In this study, potential of distinguished coastal sites for entirely renewable energy such as solar and wind sources based microgrid for chosen community is explored. Microgrid architecture is appropriate considering the coastal areas’ geographical locations and due to the inconvenience in grid extension. Study suggests, potential of coastal sites are found to be feasible for such structures based on real case scenario data and modelled technical scheme.

scholarly journals A SWOT Analysis for Offshore Wind Energy Assessment Using Remote-Sensing Potential

2020 ◽  
Vol 10 (18) ◽  
pp. 6398
Author(s):  
Meysam Majidi Nezhad ◽  
Riyaaz Uddien Shaik ◽  
Azim Heydari ◽  
Armin Razmjoo ◽  
Niyazi Arslan ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Renewable Energy ◽  
Wind Energy ◽  
Power Plants ◽  
New Technologies ◽  
Renewable Energy Sources ◽  
Offshore Wind ◽  
Energy Sources ◽  
Measuring Instruments ◽  
Offshore Wind Energy

The elaboration of a methodology for accurately assessing the potentialities of blue renewable energy sources is a key challenge among the current energy sustainability strategies all over the world. Consequentially, many researchers are currently working to improve the accuracy of marine renewable assessment methods. Nowadays, remote sensing (RSs) satellites are used to observe the environment in many fields and applications. These could also be used to identify regions of interest for future energy converter installations and to accurately identify areas with interesting potentials. Therefore, researchers can dramatically reduce the possibility of significant error. In this paper, a comprehensive SWOT (strengths, weaknesses, opportunities and threats) analysis is elaborated to assess RS satellite potentialities for offshore wind (OW) estimation. Sicily and Sardinia—the two biggest Italian islands with the highest potential for offshore wind energy generation—were selected as pilot areas. Since there is a lack of measuring instruments, such as cup anemometers and buoys in these areas (mainly due to their high economic costs), an accurate analysis was carried out to assess the marine energy potential from offshore wind. Since there are only limited options for further expanding the measurement over large areas, the use of satellites makes it easier to overcome this limitation. Undoubtedly, with the advent of new technologies for measuring renewable energy sources (RESs), there could be a significant energy transition in this area that requires a proper orientation of plans to examine the factors influencing these new technologies that can negatively affect most of the available potential. Satellite technology for identifying suitable areas of wind power plants could be a powerful tool that is constantly increasing in its applications but requires good planning to apply it in various projects. Proper planning is only possible with a better understanding of satellite capabilities and different methods for measuring available wind resources. To this end, a better understanding in interdisciplinary fields with the exchange of updated information between different sectors of development, such as universities and companies, will be most effective. In this context, by reviewing the available satellite technologies, the ability of this tool to measure the marine renewable energies (MREs) sector in large and small areas is considered. Secondly, an attempt is made to identify the strengths and weaknesses of using these types of tools and techniques that can help in various projects. Lastly, specific scenarios related to the application of such systems in existing and new developments are reviewed and discussed.

Modelling and Control of the Hydraulically Actuated Horizontal Axis Wind Turbine Pitch System

2019 ◽  
Author(s):  
P. Venkaiah ◽  
B. K. Sarkar
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Wind Turbine ◽  
Wind Power ◽  
Pid Controller ◽  
Renewable Energy Sources ◽  
Horizontal Axis ◽  
Energy Sources ◽  
Horizontal Axis Wind Turbine ◽  
The World

Abstract The advantages of renewable energy sources are available freely in nature, inexhaustible, produce either no or little pollution and low gestation period. Among all renewable energy sources, wind energy has become one of the leading resources for power production in the world as well as in the India. According to WWEA, the wind turbine installation capacity in the world has been reached over 539.291GW by the end of 2017. The entire wind power installed capacity by the end of 2017 covers more than 5% of global demand of electricity. In India, the present wind power installation capacity on October, 2017 was over 32.7GW and wind energy contribution is 55% of the total renewable energy capacity in the country. Inspite of having sharp growth rate in wind in India, only a fraction of wind energy has been tapped until now out of 302 GW wind potential which is available above 100 m height on shore. Practical horizontal axis wind turbine converts kinetic energy in the wind into useful energy by using airfoil blades. Blade element momentum (BEM) theory becomes very popular due to its simplicity in mathematical calculation as well as accuracy. Hydraulic pitch actuation system has certain advantages due to its versatility, ability to produce constant force and torque irrespective of the disturbances outside of the system, ease and accuracy of control, simplicity, safety and economy. In the present study a semi rotary actuator has been utilized for turbine pitch actuation. In order to extract maximum power from available wind, fractional order PID controller (FOPID) has been developed for pitch control of wind turbine rotor blade. The performances of PID as well as FOPID controller have been compared with available wind data. The performance of FOPID controller was satisfactory compare to PID controller.

Use of the Savonius Wind Turbine for the Needs of Public Lighting

2014 ◽  
Vol 1008-1009 ◽  
pp. 179-182
Author(s):  
Iveta Gressová
Keyword(s):  
Energy Source ◽  
Renewable Energy ◽  
Wind Energy ◽  
Wind Turbine ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Geothermal Heat ◽  
Current Generation ◽  
Savonius Wind Turbine

Our planet gives us many mineral sources, but they have a big disadvantage. They are finite. Non-renewable energy sources are enough only for decades, exceptionally for centuries. Current generation is aware of the importance of using other energy sources, such as sunlight, wind, rain, tides, waves and geothermal heat. These energy sources are renewable. It means that they come from sources, which are naturally replenished on a human timescale. One of these sources is wind energy. Use of this kind of energy source needs an initial investment, but it can reduce cost of running a household and other sectors. This article is about Savonius wind turbine and its use for the needs of public lighting.

scholarly journals EUROPEAN EXPERIENCE OF FUNCTIONING OF CLUSTERS IN THE FIELD OF ENERGY EFFICIENCY AND RENEWABLE ENERGY: LESSONS OF INNOVATIVE DEVELOPMENT

2021 ◽  
Author(s):  
Mykhailo Suvorov ◽  
Keyword(s):  
European Union ◽  
Renewable Energy ◽  
Wind Energy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Innovative Development ◽  
The European Union ◽  
Foreign Experience ◽  
Energy Companies ◽  
Energy Cluster

In the modern world, attention to the use of renewable energy sources (RES) is increasing. This is primarily due to significant investments in the exploration and development of new oil and gas fields, the approaching threshold of exhaustion of these energy resources and, as a result, the end of the era of cheap oil. In addition, the use of these non-renewable energy sources is largely associated with an increase in carbon dioxide emissions into the atmosphere and an aggravation of environmental problems. According to the energy development strategy of the European Union, energy cluster projects are designed to form and develop ties between the countries. The European Union clusters focus on the following areas: energy, nutrition and health, marine and other industries. The energy cluster includes: wind energy, biomass energy, bioenergy conversion, offshore wind energy, innovative energy ecosystem. The energy cluster of the European Union unites energy companies, promoting the integration of science and technology, creating conditions for the development of competition and cooperation between enterprises in commercial activities. For many years, clusters have been the leading form of providing for regions in the world. And the field of renewable energy is no exception here. We emphasize that this area has It has a pronounced innovation orientation and is able to become a locomotive of innovative processes in Ukraine. Forming and developing clusters in the field of RES, the regions of Ukraine can significantly accelerate their own innovative development and modernize the regional economy. Therefore, the study of foreign experience in the functioning of such clusters is extremely relevant. The high capital intensity of innovative processes in the electric power industry, combined with the significant investment potential of domestic energy companies, make it possible to consider the industry as one of the largest customers for the creation of innovative technologies. The activation of these processes in the energy sector determines the need for systematic management of the joint development of energy enterprises and related industries and areas of activity. The implementation of this approach should be facilitated by the formation and development of energy clusters. The article examines the foreign experience of creating such innovative structures in the industry.

scholarly journals CURRENT STATE OF THE RENEWABLE SOURCES OF ENERGY USE IN SERBIA

2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Dragana Milosavljević ◽  
Tomislav Pavlovic ◽  
Dragoljub Mirjanić ◽  
Danica Piršl
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Wind Energy ◽  
Geothermal Energy ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Potential ◽  
Current State ◽  
Extensive Body

This paper reviews the current state of the renewable energy use in Serbia. Further on, the paper describes energy potential and gives examples of the use of solar energy, wind energy, hydropower, geothermal energy, biomass and biogas in Serbia. Extensive body of information is given about support systems and measures of incentives for the investment in the construction and sale of electricity from plants using renewable energy sources. In conclusion, achieved results of the use of renewable energy sources in Serbia and the incentives for their use are presented.

Application of Synchro-Phasor Measurement Unit in Smart Grid Including Renewable Energy

2021 ◽  
pp. 347-361
Author(s):  
Meriem Mahboubi ◽  
Abderrahmane Ouadi
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Phase Angle ◽  
Power Grid ◽  
Renewable Energy Sources ◽  
Phasor Measurement Unit ◽  
Measurement Unit ◽  
Energy Sources ◽  
Phasor Measurement ◽  
World Demand

Renewable energy is one of the most abundant energies in our planet. In order to satisfy the world demand of electrical energy, solar and wind energy may be used. Identical to all other types of power generation plants, the integration of these renewable energy sources in smart power grid has an impact on its operation. Thus, when the electrical power is injected into the power grid by these energy sources, the system electrical parameters must be well monitored for synchronization purpose. This can be accomplished with the aid of synchro-phasors measurement units. The phase angle of the utility is a critical parameter for the operation of power devices feeding power into the grid such as PV and wind energy inverters. There are many techniques to obtain the grid phase angle such as the zero-crossing detection and the orthogonal phase locked loop. This research work discusses the use of PMUs (Phasor Measurement Unit) for providing this important parameter to system synchronization in the case of high penetration of solar or wind energy in the power grid.

Solução energética híbrida com armazenamento por bombagem

2020 ◽  
pp. 43-54
Author(s):  
Helena M. Ramos ◽  
◽  
Mariana Simão
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Energy Supply ◽  
Energy Recovery ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Energy Sources ◽  
Hybrid Energy ◽  
Pumped Storage

A elevada intermitência das fontes de energia renováveis condiciona a produção de energia elétrica, que continua a depender muito dos combustíveis fósseis. Uma vez que existe complementaridade por parte das fontes de energia renováveis, a sua integração conjunta é, sem dúvida, a melhor solução para reduzir esta dependência. Aliado a este facto, poderá coexistir um sistema de armazenamento por bombagem, capaz de gerar reservas hídricas, que serão aproveitadas quando a procura exceder a oferta energética. Procedeu-se ao desenvolvimento de dois modelos: um sobre custos de turbomáquinas e outro que visa o estudo do potencial de recuperação de energia de uma solução energética híbrida com armazenamento por bombagem combinado com fonte de energia eólica. Foram estudadas diferentes combinações para estas duas fontes de energia renovável, analisando o consumo satisfeito e a energia eólica não consumida, tendo-se concluído que o excedente de energia eólica pode ser aproveitado para bombagem. The high intermittence of renewable energy sources determines the production of electricity, which remains highly dependent on fossil fuels. Since there is complementarity between renewable energy sources, their joint integration is a potential solution to reduce this dependency. Consequentially, a pumping storage system capable of generating water reserves can coexist, which will be used when demand exceeds the energy supply. Two models were developed: one based on turbomachinery costs and the other based on the potential of energy recovery of a hybrid energy solution with pump storage combined with wind energy. Different combinations were studied for these two sources, analysing the satisfied consumption and the wind energy that is not consumed, in which it was concluded that the surplus of wind energy can be used by pumped storage.

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