scholarly journals Construction of a WebGIS Tool Based on a GIS Semiautomated Processing for the Localization of P2G Plants in Sicily (Italy)

2021 ◽  
Vol 10 (10) ◽  
pp. 671
Author(s):  
Marcello La La Guardia ◽  
Filippo D’Ippolito ◽  
Maurizio Cellura
Keyword(s):  
Population Distribution ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Database Management System ◽  
Electrical Network ◽  
Gas Network ◽  
Real Time Analysis ◽  
Best Localization ◽  
The Right ◽  
Power To Gas

The recent diffusion of RES (Renewable Energy Sources), considering the electric energy produced by photovoltaic and wind plants, brought to light the problem of the unpredictable nature of wind and solar energy. P2G (Power to Gas) implementation seems to be the right solution, transforming curtailed energy in hydrogen. The choice of the settlement of P2G plants is linked to many factors like the distances between the gas grid and the settlement of RES plants, the transportation networks, the energy production, and population distribution. In light of this, the implementation of a Multi-Criteria Analysis (MCA) into a Geographic Information System (GIS) processing represents a good strategy to achieve the goal in a specific territorial asset. In this work, this method has been applied to the case of study of Sicily (Italy). The paper shows in detail the geomatic semi-automated processing that allows to find the set of possible solutions and further to choose the best localization for new P2G plants, connected to a Relational Database Management System (RDBMS) and integrated with a WebGIS visualization for real-time analysis. This system is useful for the management, the development, and the study of hydrogen technologies, in order to link the electrical network and the gas network datasets with economical and infrastructural assets through GIS processing. In the future new factors will join in the process as policies on hydrogen take shape.

scholarly journals Simulation of Coupled Power and Gas Systems with Hydrogen-Enriched Natural Gas

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7680
Author(s):  
Yifei Lu ◽  
Thiemo Pesch ◽  
Andrea Benigni
Keyword(s):  
Natural Gas ◽  
Renewable Energy Sources ◽  
Simulation Method ◽  
Gas Pipeline ◽  
Electricity Sector ◽  
Electrical Network ◽  
Pipeline Network ◽  
Gas Network ◽  
Natural Gas Pipelines ◽  
The Impact

Due to the increasing share of renewable energy sources in the electrical network, the focus on decarbonization has extended into other energy sectors. The gas sector is of special interest because it can offer seasonal storage capacity and additional flexibility to the electricity sector. In this paper, we present a new simulation method designed for hydrogen-enriched natural gas network simulation. It can handle different gas compositions and is thus able to accurately analyze the impact of hydrogen injections into natural gas pipelines. After describing the newly defined simulation method, we demonstrate how the simulation tool can be used to analyze a hydrogen-enriched gas pipeline network. An exemplary co-simulation of coupled power and gas networks shows that hydrogen injections are severely constrained by the gas pipeline network, highlighting the importance and necessity of considering different gas compositions in the simulation.

scholarly journals A renewable energy forecasting and control approach to secured edge-level efficiency in a distributed micro-grid

Cybersecurity ◽  
2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Raphael Anaadumba ◽  
Qi Liu ◽  
Bockarie Daniel Marah ◽  
Francis Mawuli Nakoty ◽  
Xiaodong Liu ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Mobile Devices ◽  
Prediction Models ◽  
Renewable Energy Sources ◽  
Electrical Network ◽  
Effective Control ◽  
Energy Sources ◽  
Forecasting Model ◽  
Communication Overhead ◽  
Energy Forecasting

AbstractEnergy forecasting using Renewable energy sources (RESs) is gradually gaining weight in the research field due to the benefits it presents to the modern-day environment. Not only does energy forecasting using renewable energy sources help mitigate the greenhouse effect, it also helps to conserve energy for future use. Over the years, several methods for energy forecasting have been proposed, all of which were more concerned with the accuracy of the prediction models with little or no considerations to the operating environment. This research, however, proposes the uses of Deep Neural Network (DNN) for energy forecasting on mobile devices at the edge of the network. This ensures low latency and communication overhead for all energy forecasting operations since they are carried out at the network periphery. Nevertheless, the cloud would be used as a support for the mobile devices by providing permanent storage for the locally generated data and a platform for offloading resource-intensive computations that exceed the capabilities of the local mobile devices as well as security for them. Electrical network topology was proposed which allows seamless incorporation of multiple RESs into the distributed renewable energy source (D-RES) network. Moreover, a novel grid control algorithm that uses the forecasting model to administer a well-coordinated and effective control for renewable energy sources (RESs) in the electrical network is designed. The electrical network was simulated with two RESs and a DNN model was used to create a forecasting model for the simulated network. The model was trained using a dataset from a solar power generation company in Belgium (elis) and was experimented with a different number of layers to determine the optimum architecture for performing the forecasting operations. The performance of each architecture was evaluated using the mean square error (MSE) and the r-square.

Flywheel energy storage systems and their applications in power engineering

2021 ◽  
Vol 6 ◽  
pp. 26-34
Author(s):  
Vladimir Poltavets ◽  
Irina Kolchanova
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Supply And Demand ◽  
Electric Energy ◽  
Energy Generation ◽  
Flywheel Energy Storage ◽  
Energy Storage Systems ◽  
Continuous Growth

The continuous growth of renewable energy sources has drastically changed the paradigm of electric energy generation and distribution. Flywheel energy storage systems are a clean and efficient method to level supply and demand in energy grids, including those incorporating renewable energy generation. Environmental safety, resilience, high power capacity and quality make flywheel energy storage very promising. This paper contains a review of flywheel energy storage systems, already being in operation, and applications of flywheel energy storage in general.

scholarly journals Application of Life-cycle Assessment for the Study of Carbon and Water Footprints of the 16.5 MWe Wind Farm in Villonaco, Loja – Ecuador

2021 ◽  
Author(s):  
Alberto Tama Franco
Keyword(s):  
Climate Change ◽  
Life Cycle ◽  
Energy Demand ◽  
Wind Farm ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Electricity Production ◽  
Energy Sources ◽  
Cumulative Energy ◽  
Cumulative Energy Demand

Wind technology is considered to be among the most promising types of renewable energy sources, and due to high oil prices and growing concerns about climate change and energy security, it has been the subject of extensive considerations in recent years, including questions related to the relative sustainability of electricity production when the manufacturing, assembly, transportation and dismantling processes of these facilities are taken into account. The present article evaluates the environmental impacts, carbon emissions and water consumption, derived from the production of electric energy of the Villonaco wind farm, located in Loja-Ecuador, during its entire life cycle, using the Life Cycle Analysis method. Finally, it is concluded that wind energy has greater environmental advantages, since it has lower values of carbon and water footprints than other energy sources. Additionally, with the techniques Cumulative Energy Demand and Energy Return on Investment, sustainability in the production of electricity from wind power in Ecuador is demonstrated; and, that due to issues of vulnerability to climate change, the diversification of its energy mix is essential considering the inclusion of non-conventional renewable sources such as solar or wind, this being the only way to reduce both the carbon footprint and the water supply power.

scholarly journals Indices to Assess the Integration of Renewable Energy Resources on Transmission Systems

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Alexandros I. Nikolaidis ◽  
Francisco M. Gonzalez-Longatt ◽  
C. A. Charalambous
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Renewable Energy Sources ◽  
Ghg Emissions ◽  
Electrical Network ◽  
Transmission Network ◽  
Renewable Energy Resources ◽  
Continuous Increase ◽  
And Control ◽  
The Impact

The continuous increase on the penetration levels of Renewable Energy Sources (RESs) in power systems has led to radical changes on the design, operation, and control of the electrical network. This paper investigates the influence of these changes on the operation of a transmission network by developing a set of indices, spanning from power losses to GHG emissions reduction. These indices are attempting to quantify any impacts therefore providing a tool for assessing the RES penetration in transmission networks, mainly for isolated systems. These individual indices are assigned an analogous weight and are mingled to provide a single multiobjective index that performs a final evaluation. These indices are used to evaluate the impact of the integration of RES into the classic WSCC 3-machine, 9-bus transmission network.

TINJAUAN SINGKAT OPTIMALISASI PEMANFAATAN ENERGI SURYA PADA SEKTOR RUMAH TANGGA

2021 ◽  
Vol 4 (2) ◽  
Author(s):  
Ligan Budi Pratomo ◽  
Nazaruddin Sinaga
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Energy Use ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Energy Utilization ◽  
Fossil Energy ◽  
Household Sector ◽  
The Government

Energy use always increases, especially fossil energy. Through the National Energy Policy, the government continues to strive to increase the role of new and renewable energy sources so as to reduce dependence on fossil energy. Solar power generation is a type of renewable energy generator that capable to convert solar energy to electric energy. The main components of solar power generatios are batteries, solar panels, charger controllers, and inverters.  Solar power generations technology itself is always being developed, such as automatic monitoring and sun tracking systems designed to improve system performance. One of the applications of solar power generations is in the household sector. In this sector consumes 49% of the national electricity energy in 2018. This type of generator is categorized as a roof solar power generations. Based on existing data, there were 1400  roof solar power generations users in September 2019. The development of solar energy utilization for the household sector is very appropriate because it can help achieve renewable energy about 23% in 2025 and 31% in 2050 in the national energy mix.

RESTORABLE ENERGY SOURCES AS A FACTOR OF THE COMPETITIVE IMPROVEMENT ABILITY OF A TOURIST DESTINATION

2007 ◽  
Vol 14 (2) ◽  
pp. 263-270
Author(s):  
Daniela Gračan ◽  
Romina Alkier Radnić ◽  
Siniša Bogdan
Keyword(s):  
Power Plants ◽  
Market Price ◽  
Electric Energy ◽  
Energy Sources ◽  
Energy Costs ◽  
Tourist Destination ◽  
Wind Power Plants ◽  
The Right ◽  
Tourist Economy ◽  
The Town

Energy supply represents not only the energetic and ecological undertaking factor of tourist economy bearers, but the factor of profitability and competitiveness within the foreign tourist market as well. Lower energy costs form the prerequisites for higher profit accomplishments, as well as better market price competitiveness. Instead of exploiting natural resources, tourism should make the most of them, which brings into relief the directing of tourist economy subjects towards the use of restorable energy sources, particularly solar and wind energy. In spite of favourable climate features of Croatia, expressed in terms of insulation and windstrength, the restorable energy sources are still used rather insignificantly. Some positive moves in such a trend are noticeable on the island of Pag and in the town of Sibenik, where the electric energy is obtained in wind power-plants. In accordance with the concept of sustainable development of tourism, both solar energy and wind-mill energy should represent the skeleton for the energetic supply of the Croatian tourist coastline in the future. And only then, with the right amount of energy and without dependence on the world energetic markets, Croatia can develop its own healthy economic and tourist future.

Analysis of the influence of the angle of inclination of solar panels on the operation of the grid using renewable energy sources

2020 ◽  
Vol 23 (2) ◽  
pp. 70-76
Author(s):  
D. OSTRENKO ◽  
◽  
Oleksandr Kollarov ◽  
Keyword(s):  
Renewable Energy Sources ◽  
Dynamic Change ◽  
Solar Panel ◽  
Practical Significance ◽  
Electrical Network ◽  
Solar Panels ◽  
Solar Insolation ◽  
Optimal Method ◽  
Photovoltaic Panels ◽  
Model Studies

When considering the operation of the solar panel and performing modeling of its operation in [1], such input parameters as the level of solar insolation (the amount of light coming to the SP) and the value of the outside temperature on the solar panels themselves were taken into account. However, such an important parameter as the angle of inclination of the solar panels was not taken into account in such modeling. The value of this parameter takes into account, of course, the level of solar insolation, because the level of light that enters the JV directly depends on the angle at which they are located. However, it has not been considered that sensors (or luxmeters) for measuring illumination may be located at an angle other than the angle of inclination of the solar panel or, more importantly, the solar panels themselves due to their design features may not receive enough solar radiation. can take into account light sensors. This possibility exists at an angle of inclination close to zero, ie at dawn and sunset. This article is designed to take into account the influence of the angle of inclination of solar panels through the use of empirical dependencies and to test the theoretical foundations that have been formed in previous articles [1-4]. This article demonstrates the practical significance of taking into account the value of the angle of inclination of solar panels in the calculations of the photovoltaic plant. To do this, we first analyzed the state of the issue and the available methods of changing the angle of inclination in the operation of the electrical network with photovoltaic panels. Secondly, the influence of the geometric arrangement of the panels was taken into account when constructing the mathematical model. Studies have concluded that the optimal method of controlling the angle of inclination of photovoltaic panels is its seasonal change. After all, the application of this method increases the power output of RES with an average of 35% in summer and 10% in winter compared to fixed panels and does not require additional and sometimes very expensive equipment compared to the dynamic change of angle during the day. Further use of the proposed method will bring the values obtained during the simulation to the practical ones obtained when working with the installation.

Chain Tracking System for Solar Thermal Collector

2014 ◽  
Vol 658 ◽  
pp. 35-40 ◽  
Author(s):  
Daniela Ciobanu ◽  
Codruta Jaliu ◽  
Radu Saulescu
Keyword(s):  
Renewable Energy ◽  
Tracking System ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Hot Water ◽  
System Structure ◽  
Linear Actuator ◽  
Solar Collectors ◽  
Tracking Systems ◽  
New Variant

The use of renewable energy sources represents a continuous concern for the researchers around the world. The main source of renewable energy, the sun can be used for producing hot water / heating or electric energy, by means of solar collectors. The concentrating solar collectors contain tracking systems for orientation on one or two axes. The tracking system for the elevation motion has to ensure a reduced angular stroke. The mechanism that is usually included in the system structure is of linkage type, being driven by a linear actuator. The mechanism has the advantages of low complexity and reduced cost. In the case of diurnal motion, the angular stroke is larger, being usually obtained with gears or chain drives. The actuation is achieved by motor-reducers with high transmission ratios and costs. In order to reduce the costs, mechanisms containing linkages driven by linear actuators are proposed in literature. These tracking systems have the disadvantage of large overall dimensions. To reduce this disadvantage, the paper proposes a new variant of chain tracking system driven by a linear actuator. Then the proposed tracking system is structurally optimized, process that generates 6 new variants of mechanisms. These solutions eliminate the problems created by the hyperstatical constraints and avoid blocking in case of assembling errors.

scholarly journals Study on the possibility of use of photovoltaic cells for the supply of electrolysers

2011 ◽  
Vol 32 (4) ◽  
pp. 33-53
Author(s):  
Daniel Węcel ◽  
Włodzimierz Ogulewicz
Keyword(s):  
Power Plants ◽  
Technology Development ◽  
Renewable Energy Sources ◽  
Photovoltaic Cells ◽  
Electric Energy ◽  
High Light Intensity ◽  
Daily Production ◽  
Power Stations ◽  
Major Disadvantage ◽  
Long Time

Study on the possibility of use of photovoltaic cells for the supply of electrolysers Photovoltaic cells have been used for a long time to supply the electrical devices of small power in areas without access to the electricity networks (or other sources of electric energy). The ecological aspect of the use of the renewable energy sources, together with the technology development and increasingly lower costs of production the photovoltaic cells, cause the increase of their application. The solar power plants are built in several places in the world, not necessarily in the areas of high light intensity. Nowadays, such developments mostly depend on the wealth of a particular country. The largest photovoltaic power stations have power of a several dozen of MW. The major disadvantage of the photovoltaic cells is that the energy production is possible only during the day. This causes a necessity of energy accumulation in large photovoltaic systems. One possibility of storing large amounts of energy gives a hydrogen fuel, generated in the electrolysers powered directly from photovoltaic cells. Hydrogen, stored in pressure tanks or in tanks with synthetic porous materials, can be again used to produce electricity in fuel cells. This paper introduces selected issues and test results associated with the use of photovoltaic cells to power the hydrogen generators. The possible connections of photovoltaic modules integrated with electrolysers were analyzed. In this article the results of the electricity daily production by polycrystalline photovoltaic cells, collected in the course of the entire year were also presented.

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