scholarly journals Optimal Sizing of Stand-Alone Microgrids Based on Recent Metaheuristic Algorithms

Mathematics ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 140
Author(s):  
Ahmed A. Zaki Diab ◽  
Ali M. El-Rifaie ◽  
Magdy M. Zaky ◽  
Mohamed A. Tolba
Keyword(s):  
North Africa ◽  
Nuclear Power ◽  
Optimization Algorithms ◽  
Energy Systems ◽  
Energy Sources ◽  
Location Data ◽  
The World ◽  
Load Characteristics ◽  
The Cost

Scientists have been paying more attention to the shortage of water and energy sources all over the world, especially in the Middle East and North Africa (MENA). In this article, a microgrid configuration of a photovoltaic (PV) plant with fuel cell (FC) and battery storage systems has been optimally designed. A real case study in Egypt in Dobaa region of supplying safety loads at a nuclear power plant during emergency cases is considered, where the load characteristics and the location data have been taken into consideration. Recently, many optimization algorithms have been developed by researchers, and these algorithms differ from one another in their performance and effectiveness. On the other hand, there are recent optimization algorithms that were not used to solve the problem of microgrids design in order to evaluate their performance and effectiveness. Optimization algorithms of equilibrium optimizer (EQ), bat optimization (BAT), and black-hole-based optimization (BHB) algorithms have been applied and compared in this paper. The optimization algorithms are individually used to optimize and size the energy systems to minimize the cost. The energy systems have been modeled and evaluated using MATLAB.

scholarly journals Current Status and Future Developments in Nuclear-Power Industry of the World

2019 ◽  
Vol 5 (2) ◽  
Author(s):  
I. Pioro ◽  
R. B. Duffey ◽  
P. L. Kirillov ◽  
R. Pioro ◽  
A. Zvorykin ◽  
...  
Keyword(s):  
Natural Gas ◽  
Electricity Generation ◽  
Nuclear Power ◽  
Energy Systems ◽  
Electrical Energy ◽  
Power Industry ◽  
Nuclear Power Industry ◽  
Current Status ◽  
Energy Sources ◽  
The World

It is well known that electrical-power generation plays the key role in advances in industry, agriculture, technology, and standard of living. Also, strong power industry with diverse energy sources is very important for a country's independence. In general, electrical energy can be mainly generated from: (1) nonrenewable energy sources (75.5% of the total electricity generation) such as coal (38.3%), natural gas (23.1%), oil (3.7%), and nuclear (10.4%); and (2) renewable energy sources (24.5%) such as hydro, biomass, wind, geothermal, solar, and marine power. Today, the main sources for electrical-energy generation are: (1) thermal power (61.4%)—primarily using coal and secondarily using natural gas; (2) “large” hydro-electric plants (16.6%); and (3) nuclear power (10.4%). The balance of the energy sources (11.6%) is from using oil, biomass, wind, geothermal, and solar, and has visible impact just in a few countries. This paper presents the current status of electricity generation in the world, various sources of industrial electricity generation and role of nuclear power with a comparison of nuclear-energy systems to other energy systems. A comparison of the latest data on electricity generation with those several years old shows that world usage of coal, gas, nuclear, and oil has decreased by 1–2%, but usage of renewables has increased by 1% for hydro and 2% for other renewable sources. Unfortunately, within last years, electricity generation with nuclear power has decreased from 14% before the Fukushima Nuclear Power Plant (NPP) severe accident in March 2011 to about 10%. Therefore, it is important to evaluate current status of nuclear-power industry and to make projections on near (5–10 yr) and far away (10–25 yr and beyond) future trends.

scholarly journals Improving Capacity Development for Threatened Maritime and Marine Cultural Heritage Through the Evaluation of a Parameter Framework

2019 ◽  
Vol 14 (3) ◽  
pp. 409-427
Author(s):  
Katherine Recinos ◽  
Lucy Blue
Keyword(s):  
Middle East ◽  
Cultural Heritage ◽  
Case Studies ◽  
North Africa ◽  
Capacity Development ◽  
The World ◽  
The Future ◽  
Development Initiatives

Abstract Maritime cultural heritage is under increasing threat around the world, facing damage, destruction, and disappearance. Despite attempts to mitigate these threats, maritime cultural heritage is often not addressed to the same extent or with equal resources. One approach that can be applied towards protecting and conserving threatened cultural heritage, and closing this gap, is capacity development. This paper addresses the question of how capacity development can be improved and adapted for the protection of maritime cultural heritage under threat. It asserts that capacity development for maritime cultural heritage can be improved by gaining a more comprehensive and structured understanding of capacity development initiatives through applying a consistent framework for evaluation and analysis. This allows for assessment and reflection on previous or ongoing initiatives, leading to the implementation of more effective initiatives in the future. In order to do this, a model for classifying initiatives by ten parameters is proposed. It is then applied to a number of case studies featuring initiatives in the Middle East and North Africa region. This is followed by a discussion of how conclusions and themes drawn from the examination and evaluation of the case study initiatives can provide a deeper understanding of capacity development efforts, and an analysis of how the parameter model as a framework can aid in improving capacity development for threatened maritime cultural heritage overall.

Nuclear, Solar and Desalination Working Together Symbiotically

2016 ◽  
Author(s):  
Hamad Alwashmi ◽  
Jay F. Kunze
Keyword(s):  
Drinking Water ◽  
Greenhouse Gases ◽  
Nuclear Power ◽  
Fossil Fuels ◽  
Energy Systems ◽  
Capital Costs ◽  
The World ◽  
Working Together ◽  
Fuel Costs ◽  
Emission Of Greenhouse Gases

In many parts of the world, drinking water is not available except through desalination. Most of these areas have an abundance of solar energy, with few cloudy periods. Energy is required for desalination and for producing electricity. Traditionally this energy has been supplied by fossil fuels. However, even in those parts of the world that have abundant fossil fuels, using them for these purposes is being discouraged for two reasons: 1) the emission of greenhouse gases from combustion of fossil fuels, and 2) the higher value of fossil fuels when used for transportation. Nuclear power and solar power are both proposed as replacements for fossil fuels in these locations. Both of these energy systems have high capital costs, and negligible fuel costs (zero for solar) Instead of these two primary forms of energy competing, this paper shows how they can compliment each other, especially where a significant part of the electricity demand is used for desalination.

scholarly journals Improvement of turbogenerators as a technical basis for ensuring the energy independence of Ukraine

2021 ◽  
pp. 19-30
Author(s):  
V. V. Shevchenko ◽  
A. N. Minko ◽  
M. Dimov
Keyword(s):  
Renewable Energy ◽  
Electric Power ◽  
Energy Security ◽  
Nuclear Power ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Electric Power Industry ◽  
Energy Sources ◽  
The World ◽  
Energy Independence

The paper defines the directions of improving turbogenerators as the basis for ensuring the energy independence of Ukraine. The analysis of the state, problems and prospects for the development of modern electric power industry. Goal of the work is to identify promising directions for sustainable development of the national electric power industry in order to ensure energy security of Ukraine, to conduct a comparative analysis of electricity sources, to confirm the need to improve the main sources – turbogenerators. Methodology. During the research, an analytical analysis of the electricity sources, which are installed at power plants in Ukraine and the world, was carried out, taking into account the growth of the planet's population and its energy activity. Cyclic theory was chosen as the theoretical basis for forecasting. On the basis of this theory, global development trends, advantages and disadvantages of currently used sources of electricity - thermal (including nuclear) power plants and stations that operate from renewable energy sources - have been established. A review of literary sources on the methods of the energy sector forecasting the development, including the development of the energy sector in Ukraine, has been carried out. Originality. It has been established that due to the active growth of the planet's population, with the increase in its energy activity, obtaining electricity from renewable energy sources is not enough, that for the next 20-30 years nuclear power plants will be the main sources of electricity. The internal and external threats to the energy security of Ukraine, directions of development of turbogenerator construction, ways to improve turbogenerators, to increase their energy efficiency, power per unit of performance, to increase the readiness and maneuverability factors, and overload capacity have been identified. Practical significance. The need to continue the modernization and improvement of the turbogenerators of nuclear power plant units, as the main sources of electricity, has been proved. The directions of their improvement are established: increasing the power in the established sizes, making changes to the design of the turbogenerators inactive elements, replacing the cooling agent to keep Ukrainian turbogenerators at the world level, improving auxiliary systems, improving and increasing the reliability of the excitation system, introduction of automatic systems for monitoring the state turbogenerators. Possible limits of use, advantages, disadvantages and problems of using renewable energy sources for Ukraine have been established.

Energy and Energy Efficiency

2010 ◽  
pp. 1-9
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Nuclear Waste ◽  
Nuclear Power ◽  
Fossil Fuels ◽  
18Th Century ◽  
Renewable Energy Sources ◽  
Nuclear Power Engineering ◽  
Energy Sources ◽  
The World

Originally, coal was the main source of energy. It remains so throughout the 18th century during the period of the rapid industry development. Later on, oil and naphtha began to be used as energy sources and their usage expanded especially in 19th century. A special feature of the above mentioned fossil fuels is their long creation period – requiring millennia. They are a result of rotting of different plant and animal kinds. In comparison to the period of their formation, the period of their utilization is far shorter. In accordance with a number of existing statistics about 2050 year it may be talked about a depletion of the liquid fossil fuels, also, the world coal supplies are considered to last within the next 200 years. Therefore, the development of nuclear power engineering is considered to be one of the alternatives to generate energy. Recently, the nuclear power energy generation has been denied in many countries because of the risks associated with its generation and because these risks have been confirmed by serious accidents throughout the World. The storage of worked nuclear waste is also a problem and risky. The renewable energy sources are another possibility to generate energy.

A Framework for the Development of Technical Requirements for Renewable Energy Systems at a Small-Scale Airport Facility

2015 ◽  
Author(s):  
Troy V. Nguyen ◽  
Aldo Fabregas Ariza ◽  
Nicholas W. Miller ◽  
Ismael Cremer
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Clean Energy ◽  
Target System ◽  
Energy Sources ◽  
Small Scale ◽  
Renewable Energy Systems ◽  
Technical Requirements

Airports are key components of the global transportation system and are the subject of continuous sustainability improvements. Promoting clean energy sources and energy-efficient practices can help attain major sustainability goals at airports around the world. Although small airports are greater in number, most of the “sustainability” attention has been given to large airports. Small airports are typically located in rural areas, making them excellent candidates for renewable energy. This paper focuses on the planning and selection of renewable energy systems as a strategic method to reduce energy use and increase electric power reliability at small-scale airport facilities. The target system may use a combination of renewable energy sources to produce electrical power for the on-site facilities. The framework details include methods of energy collection, power production, and energy storage that are environmentally sound. A small airport serving a dual role as a flight training facility was used as case study. In the case study, systems engineering methodology was adapted to the small airport/ renewable energy domain in order to effectively identify stakeholders and elicit user requirements. These, coupled with industrial standards, relevant government regulations, and a priori constraints, are used to derive the initial requirements that serve as the basis for a preliminary design. The proposed framework also contains provisions for an on-site assessment of existing airport energy needs, sources, providers, and location-specific assets and challenges.

scholarly journals Freeware GIS tool for the techno-economic evaluation of rural electrification alternatives

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Mirelys Torres Pérez ◽  
Javier Domínguez Bravo ◽  
Cesar Hernández Leyva ◽  
Marieta Peña Abreu
Keyword(s):  
Economic Evaluation ◽  
Rural Electrification ◽  
Energy Access ◽  
Crucial Step ◽  
Isolated Communities ◽  
The World ◽  
The Cost ◽  
Flexible Model ◽  
Technological Options

Energy access is a crucial step for the socio-economic development of isolated communities and for preventing disease and fight pandemics across many parts of the world. In this research, is presented a freeware GIS tool for the techno-economic evaluation of rural electrification alternatives, based on a plugin for the QGIS (Quantum GIS) called LECGIS. The tool carries out an implementation of the IntiGIS model to perform the calculations, a flexible model capable of adapting to the realities of different scenarios. In addition, it allows the clustering of isolated houses, for a better modelling of the cost of the centralized systems. It is described the application of this tool in the Guamá (Cuba) case study and the comparisons of the results with the obtained in Intigis 1.0. It is concluded that the LECGIS plugin allows to calculate and compare seven technological options for the electrification of communities, supporting the decision-making in the planning of rural electrification projects.

scholarly journals GREEN ENERGY: SALVATION OR THREAT TO THE GLOBAL ECONOMIC AND ENERGY SYSTEM

2021 ◽  
Author(s):  
Sergiy Korinnyi ◽  
Mariia Mikhailutsa ◽  
Anastasiia Bondarenko
Keyword(s):  
Energy Storage ◽  
Alternative Energy ◽  
New Technologies ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Energy System ◽  
Green Energy ◽  
Human Potential ◽  
Energy Sources ◽  
The World

The article examines a set of issues related to "green energy" in the world, problems and opportunities from the introduction of alternative energy sources for greening the economy, developing sustainable economy and preserving human potential. Analytical works of some Ukrainian authors have been studied, in which the current state, obstacles to the realization and prospects of "green energy" in the world have been determined. The purpose of the article is to refute the allegations about the need to immediately stop the introduction of "green technologies", including the construction of solar stations. There are two opposing views on the need for green energy, which have been being discussed around the world for the past few decades. The most popular evidence from both sides on this issue is given, in particular, that the planet can be saved only through the active use of renewable energy sources, and on the other hand, that "green energy" at the current level of human development will cause even more environmental and economic problems. The arguments most often expressed by opponents of the active introduction of "green energy" are highlighted, namely: the high cost of new technologies compared to existing types of generation; the inability of "green energy" to solve the problem of warming on the planet with reference to scientific research on the amount of CO2 emissions from different types of generation as a major factor in warming; danger to the energy systems of all countries of the world due to the instability of energy production by natural factors. Counter-arguments on these issues are provided and evidence of the ability and necessity to use clean technologies is provided. The problem, on which the opinions of both parties coincide, is highlighted - the reluctance of "green" investors to spend money on storage systems, energy storage and stabilization of energy systems due to their high cost, size, insufficient energy consumption and insufficient duration of work. It is noted that the issue of developing the latest energy storage and stabilization systems and their installation at new and existing RES stations needs to be addressed immediately, but is not an obstacle to the further development of green energy.

scholarly journals Microgrid analysis using HOMER: a case study

DYNA ◽  
2018 ◽  
Vol 85 (207) ◽  
pp. 129-134 ◽  
Author(s):  
David Restrepo ◽  
Bonie Restrepo ◽  
Luz Adriana Trejos-Grisales
Keyword(s):  
Renewable Energy Sources ◽  
Energy Systems ◽  
Weather Conditions ◽  
Photovoltaic System ◽  
Energy Sources ◽  
System A ◽  
Current Energy ◽  
Local Weather ◽  
Economic Studies

The integration of renewable energy sources to create microgrids is drawing growing interest to address current energy-related challenges around the globe. Nevertheless, microgrids must be analyzed using specialized tools that allow to conduct operation, technical and economic studies. In that regard, this paper presents a case study in which the software HOMER Energy Pro was implemented to design and analyze the performance of a microgrid. Such microgrid comprises a photovoltaic system, a wind system and a diesel plant. The parameters of the energy systems are based on information about local weather conditions available in databases. Finally, this analysis is performed under two conditions: stand-alone and grid-tied.

Energy Requirements in Manufacturing: Lifecycle and Tribology Considerations

2012 ◽  
Vol 502 ◽  
pp. 55-62
Author(s):  
S.R. Schmid
Keyword(s):  
Nuclear Power ◽  
Energy Requirements ◽  
Energy Sources ◽  
Manufacturing Processes ◽  
Carbon Footprints ◽  
Source Effects ◽  
Theoretical Approaches ◽  
Energy Needs ◽  
The Cost ◽  
Ancillary Equipment

Energy sources, in the form of coal, oil, natural gas, solar or nuclear power, are global commodities, and as demand is projected to rise in the coming decades, so will costs. As such, an understanding of the energy needs of manufacturing processes and the ability to reduce the energy and carbon footprints are essential for sustainability reasons. This paper examines the global sources of energy, since the source used has a large effect on the cost and environmental impact of energy. Energy source effects are quantified in a number of measures. The theoretical approaches used to obtain a carbon footprint are explained and their shortcomining identified. Models of energy needs by manufacturing process are then examined, along with models incorporating the use of ancillary equipment such as pumps, filters, blowers, lighting, etc. Finally, the successful application of tribological principles to influence energy consumption is discussed.

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