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With the dynamic growth in both the global hunger for electrical energy and the share of variable renewable energy sources in the energy mix, distribution networks are facing new challenges where conventional solutions may not be the best ones. The increase in load in distribution grids is routinely countered by network development and expansion, in a great part to supply for on-peak load demand, which could also be done by utilizing supplementary technologies to lessen the need for or defer such expansion. Vehicle-to-grid technology could efficiently contribute to handling this issue, as electric vehicles can potentially function as storage capacities to mitigate the fluctuations of power generation. The battery energy storage systems of hybrid or completely electric watercraft, which are becoming increasingly popular, are no exception, either. These vehicles represent a considerable potential to create more complex vehicle-to-grid solutions for countries with significant inland or seaport networks, for example, Hungary, with the largest lake of Central Europe. Since there is only deficient information on the topic, the main goal of this study was to explore the energy storage capacities of small electric boats in the context of Lake Balaton, Hungary. By this example, the paper presents the potential utilization of Europe’s significant network of sea and inland recreational ports for the purpose of energy storage. Similarly to other European countries, Hungary’s energy strategy for 2030 also includes the promotion of virtual production integration, local energy communities and micro-grid solutions. At the beginning of 2021, the small electric boats in the sailing marinas of Lake Balaton represented a cumulative energy storage capacity of 4.8 MWh, which may reach even 15.6 MWh by 2030, by the promotion of micro-grid solutions. The innovative novelty of this study is that it regards small fully electric boats not just as vehicles, but also explores their energy storage potentials. The novel goal of these examinations is to explore the volume of the energy storage potentials of the small fully electric boats around Lake Balaton, the knowledge of which may facilitate the creation of new types of flexibility services related to energy storage.
Gábor Pintér; András Vincze; Nóra Baranyai; Henrik Zsiborács. Boat-to-Grid Electrical Energy Storage Potentials around the Largest Lake in Central Europe. Applied Sciences 2021, 11, 7178 .
AMA StyleGábor Pintér, András Vincze, Nóra Baranyai, Henrik Zsiborács. Boat-to-Grid Electrical Energy Storage Potentials around the Largest Lake in Central Europe. Applied Sciences. 2021; 11 (16):7178.
Chicago/Turabian StyleGábor Pintér; András Vincze; Nóra Baranyai; Henrik Zsiborács. 2021. "Boat-to-Grid Electrical Energy Storage Potentials around the Largest Lake in Central Europe." Applied Sciences 11, no. 16: 7178.
In today’s photovoltaic (PV) power plants, traditional crystalline PV modules are the prevalent technology, which is highly susceptible to partial shading due to the risk of irreversible damage. Therefore, it is advisable to explore potential construction sites for objects that might cause shading, including high-voltage transmission towers, whose shading effects can be significant due to their height. By means of innovative simulation, using a model, validated with actual data, this study endeavored to deliver novel information related to the problems of shading by high-voltage transmission lines. In the context of Hungary, it examined the risk factors, technical and economic aspects, and possible solutions important for PV projects. It provides new insight, much needed also at the international level, considering the fact that the extent of the shadows cast by conductors on the surface at low Sun elevations is not known at present and neither are the shading characteristics of conductors between two transmission towers, depending on their height, in winter, when the Sun is low. An added practical benefit of the study is that its technical and economic approaches and the software solutions are all based on the practice of PV system design and construction. Related to the investigated issues, this can facilitate the formulation of the technical and economic aspects of suitable PV power plant building strategies in Hungary.
Henrik Zsiborács; Nóra Baranyai; András Vincze; Gábor Pintér. An Economic Analysis of the Shading Effects of Transmission Lines on Photovoltaic Power Plant Investment Decisions: A Case Study. Sensors 2021, 21, 4973 .
AMA StyleHenrik Zsiborács, Nóra Baranyai, András Vincze, Gábor Pintér. An Economic Analysis of the Shading Effects of Transmission Lines on Photovoltaic Power Plant Investment Decisions: A Case Study. Sensors. 2021; 21 (15):4973.
Chicago/Turabian StyleHenrik Zsiborács; Nóra Baranyai; András Vincze; Gábor Pintér. 2021. "An Economic Analysis of the Shading Effects of Transmission Lines on Photovoltaic Power Plant Investment Decisions: A Case Study." Sensors 21, no. 15: 4973.
The Ammonia Gas Emission Model for Swine (AGEM-S), a nitrogen flow model, was created with the objective of assisting in the reduction of ammonia emissions in the Hungarian pig sector. Regarding the applied technological processes and considering the factors that influence ammonia emissions, the model quantifies the amount of ammonia emissions of pig farming in all stages (feeding, housing technology, manure storage, and application in the field). The aim of the project was to create a system that performs general calculations using the input data used by practicing farmers, without compromising the information content of the output data. Using this system, the input parameters can be entered as simply as possible and in the shortest possible time. In addition to demonstrating the impact of ammonia emission reduction measures to farmers from an integrated N management approach, AGEM-S has the potential to support the transfer of emission reduction technologies and practices at the farm level as a knowledge transfer tool primarily, but also as a decision support tool for technological change.
Marianna Magyar; Béla Pirkó; Julianna Seenger; Nóra Baranyai; Károly Dublecz; Tibor Vojtela; Renáta Rák; György Borka; Anita Szabó; Zsuzsanna Benedek. Advisory and Knowledge Transfer Tool for Ammonia Emission Mitigation on Pig Farms in Hungary. Applied Sciences 2021, 11, 5970 .
AMA StyleMarianna Magyar, Béla Pirkó, Julianna Seenger, Nóra Baranyai, Károly Dublecz, Tibor Vojtela, Renáta Rák, György Borka, Anita Szabó, Zsuzsanna Benedek. Advisory and Knowledge Transfer Tool for Ammonia Emission Mitigation on Pig Farms in Hungary. Applied Sciences. 2021; 11 (13):5970.
Chicago/Turabian StyleMarianna Magyar; Béla Pirkó; Julianna Seenger; Nóra Baranyai; Károly Dublecz; Tibor Vojtela; Renáta Rák; György Borka; Anita Szabó; Zsuzsanna Benedek. 2021. "Advisory and Knowledge Transfer Tool for Ammonia Emission Mitigation on Pig Farms in Hungary." Applied Sciences 11, no. 13: 5970.
The past decade has not only witnessed a great shift in the energy mix, with electricity gaining a more and more prominent role, but has also seen electricity coming increasingly from renewable energy sources, whose proportion is forecasted to reach 50% by 2030. As the integration of photovoltaic energy cannot be deemed successful without the electricity supply being both sustainable and secure, such far-reaching developments prompt legislations and policy makers, including those of the European Union, to make changes to accommodate not only ever-changing technologies, including energy storage solutions, but also new players in the market. Currently, battery energy storage systems are not used for enhancing the precision of photovoltaic power generation schedules, so actors in the market find it difficult to make well-grounded decisions on the viability of utilizing batteries for such a purpose. The innovative novelty of the procedure presented in this paper is that it is suitable for the planning, analysis and evaluation of the schedule accuracy enhancing impacts of sodium-sulfur and lithium-ion-based battery energy storage systems of various capacities. By the examples of two European Union countries, this article studied the deviations of day-ahead and intraday photovoltaic power generation forecasts from the actual electricity generation of 1000 MWp photovoltaic systems. The two main objectives of the project were to investigate the amount of the photovoltaic balancing needs, based on actual data compared to the day-ahead and intraday forecasts, and to establish to what extent sodium-sulfur and lithium-ion-based battery storage systems can decrease those requirements. Furthermore, by using a model for simulation, the potentials of a number of different energy storage capacities (nominal net storage capacities from 10 MWh to 10,000 MWh) for reducing grid balancing needs were assessed. The practical use of the model is that its application makes it possible to create a dynamic design, analysis and assessment system mechanism that can allow one to establish the multilevel schedule accuracy enhancing impacts of sodium-sulfur and lithium-ion energy storage systems linked to solar power plant systems. Real photovoltaic data from Belgium and Hungary were used to find out how the accuracy of PV power generation forecasts influence the level of the annual utilization of energy storage systems.
Henrik Zsiborács; Gábor Pintér; András Vincze; Zoltán Birkner; Nóra Hegedűsné Baranyai. Grid balancing challenges illustrated by two European examples: Interactions of electric grids, photovoltaic power generation, energy storage and power generation forecasting. Energy Reports 2021, 7, 3805 -3818.
AMA StyleHenrik Zsiborács, Gábor Pintér, András Vincze, Zoltán Birkner, Nóra Hegedűsné Baranyai. Grid balancing challenges illustrated by two European examples: Interactions of electric grids, photovoltaic power generation, energy storage and power generation forecasting. Energy Reports. 2021; 7 ():3805-3818.
Chicago/Turabian StyleHenrik Zsiborács; Gábor Pintér; András Vincze; Zoltán Birkner; Nóra Hegedűsné Baranyai. 2021. "Grid balancing challenges illustrated by two European examples: Interactions of electric grids, photovoltaic power generation, energy storage and power generation forecasting." Energy Reports 7, no. : 3805-3818.
As decentralized energy supply systems are becoming more and more important for the global energy supply, – apart from a heightened focus on energy rationalization and energy efficiency – increasing the role of variable renewable energy sources, such as solar and wind energy, in energy consumption is gaining more and more significance. Since energy projects tend to be meant for the long term and involve considerable financial investments, it is indispensable to be aware of the country-specific regulatory background when establishing photovoltaic (PV) systems. The last few years have witnessed a trend that new PV power plants are mostly built using traditional crystalline PV technologies, which are prone to irreversible PV module damage due to shading effects. During the operation of PV power plants, anomalies causing loss of income and even fire hazard in extreme cases may occur. Thus, the identification of the problematic parts of the system is of utmost importance. This paper presents the energy relationships of shading by the example of a Hungarian PV system. The goal of this study is to introduce a methodology that can be used internationally to categorize the operational characteristics of the strings of PV power plants on the basis of monitoring data, which allows the assessment of the annual energy loss. The innovative novelty of the model is that its use can provide practical help for the operators of PV systems around the world, since the solution is easy to adapt to real-time supervisory and management platforms and it makes the localization of problematic strings possible, thusly allowing a more focused inspection of PV power plants. The novel practical benefit of the model is that by its use it becomes possible to detect any energy loss resulting from the spacing distance of the strings of PV power plants or faulty operation (the negative shading effects of trees and other objects, faulty inverter operation) by using a simpler calculating mechanism. The early detection of problems is essential for the protection of the PV modules, the subsequent reconstruction of the strings or even solving issues under guarantee. In addition, by assessing the annual energy loss caused by shading, it becomes possible to detect any negative change in the economic indicators of the investment.
Henrik Zsiborács; László Zentkó; Gábor Pintér; András Vincze; Nóra Hegedűsné Baranyai. Assessing shading losses of photovoltaic power plants based on string data. Energy Reports 2021, 7, 3400 -3409.
AMA StyleHenrik Zsiborács, László Zentkó, Gábor Pintér, András Vincze, Nóra Hegedűsné Baranyai. Assessing shading losses of photovoltaic power plants based on string data. Energy Reports. 2021; 7 ():3400-3409.
Chicago/Turabian StyleHenrik Zsiborács; László Zentkó; Gábor Pintér; András Vincze; Nóra Hegedűsné Baranyai. 2021. "Assessing shading losses of photovoltaic power plants based on string data." Energy Reports 7, no. : 3400-3409.
As efforts are made worldwide to meet the growing energy needs of the population in a more sustainable way, harnessing weather-dependent renewable energy sources is becoming more and more important. One of the available technologies is photovoltaic energy production. In the last decade, there has been a growing need among households, institutions, and businesses to reduce the use of fossil-fuel-based electricity from the public grid. In order to meet their electricity demand in Hungary, investors prefer using household-sized photovoltaic power plant (HMKE) systems. The novelty of this study is that it examines the number and total power of photovoltaic HMKEs at the district level in the service areas of different electricity distributors, taking into account the social, economic, infrastructural, and welfare dimensions of these districts as well. The study seeks to uncover whether there is a correlation between the number and total power of these types of power plants and the indicators of the districts, and if so, how strong these relationships are. The examination of the relationships also involved, in addition to correlations by pairs, the relationships of the ranking of the districts according to the complex indicators created from the district indicators and the ranking of the districts based on the number and power of photovoltaic HMKEs per 1000 members of the population. By exploring correlations, the paper seeks to establish a regression model for the number of photovoltaic HMKEs and the territorial (district) indicators.
Nóra Hegedűsné Baranyai; Henrik Zsiborács; András Vincze; Nóra Rodek; Martina Makai; Gábor Pintér. Correlation Analysis of the Spread of Household-Sized Photovoltaic Power Plants and Various District Indicators: A Case Study. Sustainability 2021, 13, 482 .
AMA StyleNóra Hegedűsné Baranyai, Henrik Zsiborács, András Vincze, Nóra Rodek, Martina Makai, Gábor Pintér. Correlation Analysis of the Spread of Household-Sized Photovoltaic Power Plants and Various District Indicators: A Case Study. Sustainability. 2021; 13 (2):482.
Chicago/Turabian StyleNóra Hegedűsné Baranyai; Henrik Zsiborács; András Vincze; Nóra Rodek; Martina Makai; Gábor Pintér. 2021. "Correlation Analysis of the Spread of Household-Sized Photovoltaic Power Plants and Various District Indicators: A Case Study." Sustainability 13, no. 2: 482.
In the global transformation of energy systems, solar energy plays a prominent role, since the energy from our star is a limitless and clean resource, which is available practically almost everywhere. In spite of the immense advancements of photovoltaic systems, which utilize this source of energy, no in-depth research has been carried out regarding the present Hungarian status of the small-scale photovoltaic power plants, the most common type of solar power plant in Hungary. The novelty of this study is that it examines the number and power of these small-scale power plants at the settlement level within the service areas of the various distribution companies, by also considering the economic and infrastructural dimensions of the settlements. The paper seeks answers to the questions whether there are any significant relationships between the number and the power of power plants of this type and the indicators of the settlements, and if so, how strong they are. Besides pairwise correlations, the study also involved the analysis of the relationship between the ranking of the settlements based on the settlements’ complex indicators that were created from the settlements’ indicators and the ranking of the settlements according to the number and power of household-sized photovoltaic power plants per 1000 people. In the course of exploring the relationships, a regression model was also devised concerning the number of household-sized photovoltaic power plants and the settlement indicators.
Nóra Hegedűsné Baranyai; Henrik Zsiborács; András Vincze; Nóra Rodek; Martina Makai; Gábor Pintér. Relationships between the Number and Power of Hungarian Household-Sized Photovoltaic Power Plants and Selected Indicators of the Settlements: A Case Study. Processes 2020, 9, 4 .
AMA StyleNóra Hegedűsné Baranyai, Henrik Zsiborács, András Vincze, Nóra Rodek, Martina Makai, Gábor Pintér. Relationships between the Number and Power of Hungarian Household-Sized Photovoltaic Power Plants and Selected Indicators of the Settlements: A Case Study. Processes. 2020; 9 (1):4.
Chicago/Turabian StyleNóra Hegedűsné Baranyai; Henrik Zsiborács; András Vincze; Nóra Rodek; Martina Makai; Gábor Pintér. 2020. "Relationships between the Number and Power of Hungarian Household-Sized Photovoltaic Power Plants and Selected Indicators of the Settlements: A Case Study." Processes 9, no. 1: 4.
The accuracy and reliability of solar tracking greatly impacts the performance of concentrator photovoltaic modules (CPV). Thus, it is of utmost significance to know how deviations in tracking influence CPV module power. In this work, the positioning characteristics of CPV modules compared to the focus points were investigated. The performance of CPV modules mounted on a dual-axis tracking system was analysed as a function of their orientation and inclination. The actual experiment was carried out with CPV cells of 3 mm in diameter. By using a dual tracking system under real weather conditions, the module’s position was gradually modified until the inclination differed by 5° relative to the optimal position of the focus point of the CPV module. The difference in inclination was established by the perfect perpendicularity to the Sun’s rays. The results obtained specifically for CPV technology help determine the level of accuracy that solar tracking photovoltaic systems are required to have to keep the loss in power yield under a certain level. Moreover, this power yield loss also demonstrated that the performance insensitivity thresholds of the CPV modules did not depend on the directions of the alterations in azimuthal alignment. The novelty of the research lies in the fact that earlier, no information had been found regarding the tracking insensitivity point in CPV technologies. A further analysis was carried out to compare the yield of CPV to other, conventional photovoltaic technologies under real Central European climate conditions. It was shown that CPV needs a sun tracking accuracy of at least 0.5° in order to surpass the yield of other PV technologies. Besides providing an insight into the tracking error values of solar tracking sensors, it is believed that the results might facilitate the planning of solar tracking sensor investments as well as the economic calculations related to 3 mm cell diameter CPV system investments.
Henrik Zsiborács; Nóra Hegedűsné Baranyai; András Vincze; Philipp Weihs; Stefan F. Schreier; Christian Gützer; Michael Revesz; Gábor Pintér. The Impacts of Tracking System Inaccuracy on CPV Module Power. Processes 2020, 8, 1278 .
AMA StyleHenrik Zsiborács, Nóra Hegedűsné Baranyai, András Vincze, Philipp Weihs, Stefan F. Schreier, Christian Gützer, Michael Revesz, Gábor Pintér. The Impacts of Tracking System Inaccuracy on CPV Module Power. Processes. 2020; 8 (10):1278.
Chicago/Turabian StyleHenrik Zsiborács; Nóra Hegedűsné Baranyai; András Vincze; Philipp Weihs; Stefan F. Schreier; Christian Gützer; Michael Revesz; Gábor Pintér. 2020. "The Impacts of Tracking System Inaccuracy on CPV Module Power." Processes 8, no. 10: 1278.
The use of solar energy is an obvious choice; the energy of the sun is not only indispensable for most processes in nature but it is also a clean, abundant, sustainable, and—most importantly—universally available resource. Although the further spread of photovoltaic systems, which make use of this source of energy, is expected in the future all around the world, no comprehensive investigation has been conducted into the current situation of the small-scale photovoltaic power plants in Hungary, where this type of photovoltaic system is the most popular. By means of a case study, whose novelty lies in its focus on small-scale power plants and their complex examination, including economic and geographic indicators, this paper analyzes their status in Hungary. The study endeavors to establish the reasons for the popularity of this type of power plant and to identify some typical geographical locations with well-illustrated photovoltaic density. Residential, as well as business prosumers, were examined with the aim of learning more about the density of the small-scale photovoltaic systems and their geographical locations. Another goal was to calculate the average size of small-scale photovoltaic power plants and to gain more understanding of their economic aspects. The outcomes of this research include maps displaying the density of the small-scale photovoltaic power plants in Hungary and the results of the economic calculations for such investments.
Gábor Pintér; Henrik Zsiborács; Nóra Hegedűsné Baranyai; András Vincze; Zoltán Birkner. The Economic and Geographical Aspects of the Status of Small-Scale Photovoltaic Systems in Hungary—A Case Study. Energies 2020, 13, 3489 .
AMA StyleGábor Pintér, Henrik Zsiborács, Nóra Hegedűsné Baranyai, András Vincze, Zoltán Birkner. The Economic and Geographical Aspects of the Status of Small-Scale Photovoltaic Systems in Hungary—A Case Study. Energies. 2020; 13 (13):3489.
Chicago/Turabian StyleGábor Pintér; Henrik Zsiborács; Nóra Hegedűsné Baranyai; András Vincze; Zoltán Birkner. 2020. "The Economic and Geographical Aspects of the Status of Small-Scale Photovoltaic Systems in Hungary—A Case Study." Energies 13, no. 13: 3489.
Over the last decade, the importance of electricity in the overall energy mix has been increasing. Trends show that by 2030, half of the electricity production will be from renewable energy sources, such as wind or solar energy. To complete and underpin such robust growth, the EU policies and national legislations related to the electricity market must introduce new instruments, taking into account new market players and cutting-edge technologies such as energy storage devices. The sustainability and security of the European electricity supply are strongly dependent on the successful integration of photovoltaic energy. This paper examines the deviation between day-ahead and intraday photovoltaic power generation forecasts compared to the real production regarding 1000 MWp photovoltaic systems. The aim was to determine the photovoltaic balancing requirement through real data relative to the day-ahead and intraday forecasts. Another goal was also to establish the photovoltaic grid balancing reduction potentials of lithium-ion-based and vanadium redox flow battery storage systems. As a result of this research, it was possible to present the magnitudes of the balancing power, the energy divergence, and the frequency in the examined 5-year period. In addition, by a second modeling concept, several energy storage capacity sizes (nominal net storage capacity) were simulated from the values of 10 to 10,000 MWh to estimate these grid balancing reduction potentials by using real, measured photovoltaic data.
Henrik Zsiborács; Nóra Hegedűsné Baranyai; László Zentkó; Adrián Mórocz; István Pócs; Kinga Máté; Gábor Pintér. Electricity Market Challenges of Photovoltaic and Energy Storage Technologies in the European Union: Regulatory Challenges and Responses. Applied Sciences 2020, 10, 1472 .
AMA StyleHenrik Zsiborács, Nóra Hegedűsné Baranyai, László Zentkó, Adrián Mórocz, István Pócs, Kinga Máté, Gábor Pintér. Electricity Market Challenges of Photovoltaic and Energy Storage Technologies in the European Union: Regulatory Challenges and Responses. Applied Sciences. 2020; 10 (4):1472.
Chicago/Turabian StyleHenrik Zsiborács; Nóra Hegedűsné Baranyai; László Zentkó; Adrián Mórocz; István Pócs; Kinga Máté; Gábor Pintér. 2020. "Electricity Market Challenges of Photovoltaic and Energy Storage Technologies in the European Union: Regulatory Challenges and Responses." Applied Sciences 10, no. 4: 1472.
For implementing renewable energy policies it is necessary to convince the population of the appropriateness and usefulness of the ideas. The information provision needed for that requires the communication to be accessible and understandable to the target audience. This research examined the national renewable energy action plans of the member states of the European Union. The online accessibility of these documents and their readability were examined using a simple accessibility test and the Flesch and Flesch–Kincaid readability tests. The paper also addresses the relationship between the culturally-determined power distance indices and the economic and developmental characteristics of the countries and the readability values of their samples. The results showed that the examined documents could be easily accessed, but the action plans of all the member states were difficult to read. The emerging pattern suggested that the text samples of the countries with higher power distances were harder to interpret. Nevertheless, no significant relationship was detected by the correlation analyses between the power distance indices and the Flesch and Flesch–Kincaid readability scores, while strong relationships were detected between the Human Development Index (HDI) data and the results of both readability tests in the group of countries with the highest power distance values.
András Vincze; Nóra Hegedűsné Baranyai; Henrik Zsiborács; Szilvia Csányi; István Háber; Gábor Pintér. Communicating Renewable Energy in the National Action Plans of the Member States of the European Union. Sustainability 2020, 12, 970 .
AMA StyleAndrás Vincze, Nóra Hegedűsné Baranyai, Henrik Zsiborács, Szilvia Csányi, István Háber, Gábor Pintér. Communicating Renewable Energy in the National Action Plans of the Member States of the European Union. Sustainability. 2020; 12 (3):970.
Chicago/Turabian StyleAndrás Vincze; Nóra Hegedűsné Baranyai; Henrik Zsiborács; Szilvia Csányi; István Háber; Gábor Pintér. 2020. "Communicating Renewable Energy in the National Action Plans of the Member States of the European Union." Sustainability 12, no. 3: 970.
Despite the apparent stability of the electricity system from a consumer’s point of view, there is indeed significant effort exerted by network operators to guarantee the constancy of the electricity supply in order to meet demands any time. In the energy sector models provide an important conceptual framework to generate a range of insight, examine the impacts of different scenarios and analyze the supply and demand of energy. This paper presents a user-oriented and transparent modeling concept of the European calculator, a tool for delineating emission and sustainable transformation pathways at European and member state levels. The model consists of several modules of different sectors, where the energy supply module includes sub-modules for electricity generation, hydrogen production and oil refinery. The energy storage requirement module investigates how new technologies can help the stability of the European electricity system with increasing renewables penetration, demand-side measures and decarbonization paths. The objective of this study is to introduce the concept of this module with the main logical steps, especially the input parameters, assumptions, the basic data of electricity trade and maximum energy storage potential levels. The article also introduces and explains the feasibility of the theoretical maximum gross electricity generation potential from variable renewable energy for the European Union including Switzerland, compared to the demand in 2040. According to the results the electricity systems in the future will need to show ever increasing flexibility in order to cope with variable renewable energy production on the supply side, and shifting patterns of electricity consumption on the demand side.
Miklós Gyalai-Korpos; László Zentkó; Csaba Hegyfalvi; Gergely Detzky; Péter Tildy; Nóra Hegedűsné Baranyai; Gábor Pintér; Henrik Zsiborács. The Role of Electricity Balancing and Storage: Developing Input Parameters for the European Calculator for Concept Modeling. Sustainability 2020, 12, 811 .
AMA StyleMiklós Gyalai-Korpos, László Zentkó, Csaba Hegyfalvi, Gergely Detzky, Péter Tildy, Nóra Hegedűsné Baranyai, Gábor Pintér, Henrik Zsiborács. The Role of Electricity Balancing and Storage: Developing Input Parameters for the European Calculator for Concept Modeling. Sustainability. 2020; 12 (3):811.
Chicago/Turabian StyleMiklós Gyalai-Korpos; László Zentkó; Csaba Hegyfalvi; Gergely Detzky; Péter Tildy; Nóra Hegedűsné Baranyai; Gábor Pintér; Henrik Zsiborács. 2020. "The Role of Electricity Balancing and Storage: Developing Input Parameters for the European Calculator for Concept Modeling." Sustainability 12, no. 3: 811.
This article examines the positioning features of polycrystalline, monocrystalline, and amorphous silicon modules relative to the focus points of concentrator photovoltaic modules under real meteorological conditions using a dual tracking system. The performance of the photovoltaic modules mounted on a dual-axis tracking system was regarded as a function of module orientation where the modules were moved step by step up to a point where their inclination differed by 30° compared to the ideal focus point position of the reference concentrator photovoltaic module. The inclination difference relative to the ideal focus point position was determined by the perfect perpendicularity to the rays of the sun. Technology-specific results show the accuracy of a sun tracking photovoltaic system that is required to keep the loss in power yield below a defined level. The loss in power yield, determined as a function of the measurement results, also showed that the performance insensitivity thresholds of the monocrystalline, polycrystalline, and amorphous silicon modules depended on the direction of the alignment changes. The performance deviations showed clear azimuth dependence. Changing the tilt of the modules towards north and south showed little changes in results, but inclination changes towards northwest, southwest, southeast, and northeast produced results diverging more markedly from each other. These results may make the planning of solar tracking sensor investments easier and help with the estimate calculations of the total investment and operational costs and their return concerning monocrystalline, polycrystalline, and amorphous silicon photovoltaic systems. The results also provide guidance for the tracking error values of the solar tracking sensor.
Henrik Zsiborács; Nóra Hegedűsné Baranyai; András Vincze; István Háber; Philipp Weihs; Sandro Oswald; Christian Gützer; Gábor Pintér. Changes of Photovoltaic Performance as a Function of Positioning Relative to the Focus Points of a Concentrator PV Module: Case Study. Applied Sciences 2019, 9, 3392 .
AMA StyleHenrik Zsiborács, Nóra Hegedűsné Baranyai, András Vincze, István Háber, Philipp Weihs, Sandro Oswald, Christian Gützer, Gábor Pintér. Changes of Photovoltaic Performance as a Function of Positioning Relative to the Focus Points of a Concentrator PV Module: Case Study. Applied Sciences. 2019; 9 (16):3392.
Chicago/Turabian StyleHenrik Zsiborács; Nóra Hegedűsné Baranyai; András Vincze; István Háber; Philipp Weihs; Sandro Oswald; Christian Gützer; Gábor Pintér. 2019. "Changes of Photovoltaic Performance as a Function of Positioning Relative to the Focus Points of a Concentrator PV Module: Case Study." Applied Sciences 9, no. 16: 3392.
Global electricity demand is constantly growing, making the utilization of solar and wind energy sources, which also reduces negative environmental effects, more and more important. These variable energy sources have an increasing role in the global energy mix, including generating capacity. Therefore, the need for energy storage in electricity networks is becoming increasingly important. This paper presents the challenges of European variable renewable energy integration in terms of the power capacity and energy capacity of stationary storage technologies. In this research, the sustainable transition, distributed generation, and global climate action scenarios of the European Network of Transmission System Operators for 2040 were examined. The article introduces and explains the feasibility of the European variable renewable energy electricity generation targets and the theoretical maximum related to the 2040 scenarios. It also explains the determination of the storage fractions and power capacity in a new context. The aim is to clarify whether it is possible to achieve the European variable renewable energy integration targets considering the technology-specific storage aspects. According to the results, energy storage market developments and regulations which motivate the increased use of stationary energy storage systems are of great importance for a successful European solar and wind energy integration. The paper also proves that not only the energy capacity but also the power capacity of storage systems is a key factor for the effective integration of variable renewable energy sources.
Henrik Zsiborács; Nóra Hegedűsné Baranyai; András Vincze; László Zentkó; Zoltán Birkner; Kinga Máté; Gábor Pintér. Intermittent Renewable Energy Sources: The Role of Energy Storage in the European Power System of 2040. Electronics 2019, 8, 729 .
AMA StyleHenrik Zsiborács, Nóra Hegedűsné Baranyai, András Vincze, László Zentkó, Zoltán Birkner, Kinga Máté, Gábor Pintér. Intermittent Renewable Energy Sources: The Role of Energy Storage in the European Power System of 2040. Electronics. 2019; 8 (7):729.
Chicago/Turabian StyleHenrik Zsiborács; Nóra Hegedűsné Baranyai; András Vincze; László Zentkó; Zoltán Birkner; Kinga Máté; Gábor Pintér. 2019. "Intermittent Renewable Energy Sources: The Role of Energy Storage in the European Power System of 2040." Electronics 8, no. 7: 729.
The energy demand of mankind is constantly growing, thus the utilization of various renewable energy sources, which also reduces negative environmental effects, is becoming more and more important. Because of the achievement of climate protection targets, photovoltaic (PV) energy has an increasing role in the global energy mix. This paper presents the technical and economic aspects of different photovoltaic system configurations designed to suit the Hungarian renewable energy regulations. In this study, five alternative PV configurations were examined for systems with a capacity from 50 kW to 500 kW, related to low- and medium-voltage installations. This article also introduces and explains the Hungarian economic PV and Feed-in-Tariff (FiT) regulations, where three different investment alternatives are analyzed with the help of economic indicators. This study could help stakeholders in the market (e.g., the Hungarian industry sector and local governments) understand the possible directions of technical and economic PV development. According to the results, the payback periods in all the studied economic-technical cases were below 10 years. The experimental results show that each investment option may be a good decision from an economic and technical point of view under the Hungarian regulations in force in 2019.
Henrik Zsiborács; Nóra Hegedűsné Baranyai; Szilvia Csányi; András Vincze; Gábor Pintér. Economic Analysis of Grid-Connected PV System Regulations: A Hungarian Case Study. Electronics 2019, 8, 149 .
AMA StyleHenrik Zsiborács, Nóra Hegedűsné Baranyai, Szilvia Csányi, András Vincze, Gábor Pintér. Economic Analysis of Grid-Connected PV System Regulations: A Hungarian Case Study. Electronics. 2019; 8 (2):149.
Chicago/Turabian StyleHenrik Zsiborács; Nóra Hegedűsné Baranyai; Szilvia Csányi; András Vincze; Gábor Pintér. 2019. "Economic Analysis of Grid-Connected PV System Regulations: A Hungarian Case Study." Electronics 8, no. 2: 149.
Solar energy has an increasing role in the global energy mix. The need for flexible storage photovoltaic systems and energy storage in electricity networks is becoming increasingly important as more generating capacity uses solar and wind energy. This paper is a study on the economic questions related to flexible storage photovoltaic systems of household size in 2018. The aim is to clarify whether it is possible in the European Union to achieve a payback of the costs of flexible storage photovoltaic system investments for residential customers considering the technology-specific storage aspects prevalent in 2018. We studied seven different flexible storage photovoltaic investments with different battery technologies in Germany, France, Italy, and Spain because, in Europe, these countries have a prominent role with regard to the spread of photovoltaic technology. These investment alternatives are studied with the help of economic indicators for the different cases of the selected countries. At the end of our paper we come to the conclusion that an investment of a flexible storage photovoltaic (PV) system with Olivine-type-LiFePO4, Lithium-Ion, Vented lead-acid battery (OPzS), Sealed lead-acid battery (OPzV), and Aqueous Hybrid Ion (AHI) batteries can have a positive net present value due to the high electricity prices in Germany and in Spain. The most cost-effective technology was the Olivine-type-LiFePO4 and the Lithium-Ion at the time of the study. We suggest the provision of governmental support and uniform European modifications to the regulatory framework, especially concerning grid fees and tariffs, which would be necessary in the beginning to help to introduce these flexible storage PV systems to the market.
Henrik Zsiborács; Nóra Hegedűsné Baranyai; András Vincze; István Háber; Gábor Pintér. Economic and Technical Aspects of Flexible Storage Photovoltaic Systems in Europe. Energies 2018, 11, 1445 .
AMA StyleHenrik Zsiborács, Nóra Hegedűsné Baranyai, András Vincze, István Háber, Gábor Pintér. Economic and Technical Aspects of Flexible Storage Photovoltaic Systems in Europe. Energies. 2018; 11 (6):1445.
Chicago/Turabian StyleHenrik Zsiborács; Nóra Hegedűsné Baranyai; András Vincze; István Háber; Gábor Pintér. 2018. "Economic and Technical Aspects of Flexible Storage Photovoltaic Systems in Europe." Energies 11, no. 6: 1445.
The aim of the study is to compare the tilt angle-orientation and dual-axis tracking characteristics of mono- (m-Si), polycrystalline (p-Si), and amorphous silicon (a-Si) modules in the summer of 2017, under real meteorological conditions with simulated data. The most important new element of our study is that, besides a comparison of the three most significant photovoltaic types, the technologies are differentiated by examining specific energy generation using dual-axis tracking and four different orientations at 5-degree intervals compared to simulated values, near to the summer solstice. For these types of measurements, as far as we are aware, there is no previous reliable, well-supported, comparative data. The simulated data show less accurate results, proving the importance of real data. Based on simulated data, the tilt angle and orientation showed about 10% favorable values compared to reality. Knowing our results can make it easier to plan investment, and estimate the investment and operational costs and their return on crystalline and amorphous silicon solar modules, for both sun-tracking and fixed systems with various orientations and tilt angles.
Henrik Zsiborács; Attila Bai; József Popp; Zoltán Gabnai; Béla Pályi; István Farkas; Nóra Hegedűsné Baranyai; Mihály Veszelka; László Zentkó; Gábor Pintér. Change of Real and Simulated Energy Production of Certain Photovoltaic Technologies in Relation to Orientation, Tilt Angle and Dual-Axis Sun-Tracking. A Case Study in Hungary. Sustainability 2018, 10, 1394 .
AMA StyleHenrik Zsiborács, Attila Bai, József Popp, Zoltán Gabnai, Béla Pályi, István Farkas, Nóra Hegedűsné Baranyai, Mihály Veszelka, László Zentkó, Gábor Pintér. Change of Real and Simulated Energy Production of Certain Photovoltaic Technologies in Relation to Orientation, Tilt Angle and Dual-Axis Sun-Tracking. A Case Study in Hungary. Sustainability. 2018; 10 (5):1394.
Chicago/Turabian StyleHenrik Zsiborács; Attila Bai; József Popp; Zoltán Gabnai; Béla Pályi; István Farkas; Nóra Hegedűsné Baranyai; Mihály Veszelka; László Zentkó; Gábor Pintér. 2018. "Change of Real and Simulated Energy Production of Certain Photovoltaic Technologies in Relation to Orientation, Tilt Angle and Dual-Axis Sun-Tracking. A Case Study in Hungary." Sustainability 10, no. 5: 1394.
This paper examines the thermal properties of free-standing, ground-installed, south-facing crystalline and amorphous silicon photovoltaic modules, the remaining energy and the energy generation of the modules, in ideal and actual summer weather conditions. This work studies the algorithms in other studies used to describe the thermal processes occurring on the surface of photovoltaic modules. Using accurate devices and real, measured data, the deviations and the inaccuracies of theoretical approaches are investigated. The emphasis of the present study is to improve the simulation accuracy of the total emitted long-wave radiation at the module surface and to show the appropriate overall convection coefficient values for ground-mounted south-facing photovoltaic technologies. The innovative aspect of the present paper is an improved model resulting from an improved convective heat transfer and net long-wave radiation calculation. As a result of this research, algorithms describing the energy fluxes were developed. These algorithms have a 1–3% better accuracy of the net long-wave radiation calculations at the module surface. The rate of net energy exchange by convection at the module surface could be improved by 10–12% compared to the previous literature.
Henrik Zsiborács; Gábor Pintér; Attila Bai; József Popp; Zoltán Gabnai; Béla Pályi; Istvan Farkas; Nóra Hegedűsné Baranyai; Christian Gützer; Heidelinde Trimmel; Sandro Oswald; Philipp Weihs. Comparison of Thermal Models for Ground-Mounted South-Facing Photovoltaic Technologies: A Practical Case Study. Energies 2018, 11, 1114 .
AMA StyleHenrik Zsiborács, Gábor Pintér, Attila Bai, József Popp, Zoltán Gabnai, Béla Pályi, Istvan Farkas, Nóra Hegedűsné Baranyai, Christian Gützer, Heidelinde Trimmel, Sandro Oswald, Philipp Weihs. Comparison of Thermal Models for Ground-Mounted South-Facing Photovoltaic Technologies: A Practical Case Study. Energies. 2018; 11 (5):1114.
Chicago/Turabian StyleHenrik Zsiborács; Gábor Pintér; Attila Bai; József Popp; Zoltán Gabnai; Béla Pályi; Istvan Farkas; Nóra Hegedűsné Baranyai; Christian Gützer; Heidelinde Trimmel; Sandro Oswald; Philipp Weihs. 2018. "Comparison of Thermal Models for Ground-Mounted South-Facing Photovoltaic Technologies: A Practical Case Study." Energies 11, no. 5: 1114.
Photovoltaic (PV) energy and energy efficiency have an increasing role in global energy usage. This paper is a study of building photovoltaic systems (PVS) to modernize existing or developed street lighting systems in Hungarian villages of 900–1200 inhabitants. The objective of this study is to show the economic questions related to the investments in photovoltaic systems and light emitting diode (LED) street lighting developments under Hungarian regulations. With the help of this study, it may be possible to support local governments to use combined photovoltaic energy for street lighting developments. This article presents the Hungarian regulations regarding photovoltaic systems and shows why local governments are not able to connect their street lighting systems to photovoltaic systems. Three different investment alternatives for local governments are studied with the help of economic indicators. Our conclusion is that investments in photovoltaic street lighting systems can be profitable if a street lighting system already exists and requires no modernization. Under the current regulations of Hungary, the examined projects can be viable only to offset the energy costs of street lighting by the delivery price of electricity from the PVS.
Gabor Pinter; Nóra Hegedűsné Baranyai; Alec Wiliams; Henrik Zsiborács. Study of Photovoltaics and LED Energy Efficiency: Case Study in Hungary. Energies 2018, 11, 790 .
AMA StyleGabor Pinter, Nóra Hegedűsné Baranyai, Alec Wiliams, Henrik Zsiborács. Study of Photovoltaics and LED Energy Efficiency: Case Study in Hungary. Energies. 2018; 11 (4):790.
Chicago/Turabian StyleGabor Pinter; Nóra Hegedűsné Baranyai; Alec Wiliams; Henrik Zsiborács. 2018. "Study of Photovoltaics and LED Energy Efficiency: Case Study in Hungary." Energies 11, no. 4: 790.