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Journal articles on the topic 'Energy system problems'

Author: Grafiati

Published: 7 June 2025

Last updated: 17 July 2025

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1

Th. Mohammad, Abdulrahman, and Amer Ibrahim Ismael. "An equivalent photovoltaic solar system to solve the problems of electricity in Iraqi houses." AIMS Energy 7, no. 5 (2019): 660–70. http://dx.doi.org/10.3934/energy.2019.5.660.

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2

Nekrasov, Aleksandr S. "The problems of the Russian energy system." MOCT-MOST Economic Policy in Transitional Economies 3, no. 1 (1993): 89–116. http://dx.doi.org/10.1007/bf01101844.

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3

Samkharadze, R., and L. Gachechiladze. "CONTROL PROBLEMS IN POWER SYSTEMS AND EXPERT SYSTEMS." Slovak international scientific journal, no. 93 (March 12, 2025): 9–13. https://doi.org/10.5281/zenodo.15011064.

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The article offers an overview and analysis of energy system control problems. It considers the current state and prospects for the creation and use of expert systems for power system control and substantiates the necessity of using expert systems for multi-criteria control of power systems' normal daily regimes. It is shown that the scope of application of expert systems in the energy sector is quite wide: planning of power system modes, control and control of electric power systems, restoration of power supply after an accident, identifying locations of faults in the power grid, analysis of

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Naveen, Prakash Ravi Ved, Singh Shakti, and Sahu Deepak. "Smart Solar Panel Energy Management System." Advancement and Research in Instrumentation Engineering 3, no. 3 (2020): 1–5. https://doi.org/10.5281/zenodo.4040421.

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<em>India is the only country that spends the least amount of money to install solar power plants that produce large quantities of current But even in this era of technology, our solar power plants are facing the difficulties and not got the new things and technology .Due to which there is a significant decrease in the production of electricity through solar power plant. Energy efficiency is also declining due to lack of accurate knowledge of pig panel shortage, inadequate observation of energy production. All these problems are occurs due to energy capacity measurement is not well ,weather, t

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5

V. O. PLOSKYI, M. V. MYKYTAS, P. P. TESLENKO, and S. I. KUSHNIR. "SYSTEM APPLIED GEOMETRY: RESEARCH PROBLEMS OF CLUSTER ORGANIZATIONAL SYSTEMS." Bridges and tunnels: Theory, Research, Practice, no. 12 (May 21, 2019): 70–77. http://dx.doi.org/10.15802/bttrp2017/167823.

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Purpose. The article outlines the basic theoretical concepts of the general concept of clustering geometric objects, analyzes some areas of its effective practical application. Methodology. System applied geometry is considered as a form of organization of the methodological core and theoretical foundations of applied geometry and the practical implementation of its tools, based on the use of the principles of systems theory. The process of designing and optimizing cluster organizational structures for energy efficiency is considered as a complex project. Findings. A comparison was made of the

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VEZIROGLU, T. Nejat. "Hydrogen energy system for sustainability: Permanent solution to global energy-environmental problems." Journal of Advanced Science 13, no. 3 (2001): 101–16. http://dx.doi.org/10.2978/jsas.13.101.

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TANASIIENKO, N., O. POPLAVSKA, and I. FEDORCHUK. "STATE AND PROSPECTS FOR SOLVING ENVIRONMENTAL PROBLEMS IN THE NATIONAL SECURITY SYSTEM." Herald of Khmelnytskyi National University. Economic sciences 272, no. 4(1) (2019): 142–46. https://doi.org/10.31891/2307-5740-2019-272-4-1-142-146.

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The purpose of the article is to identify and analyse global environmental problems and ways to address them in the national security system. The ill-conceived and active human activity, accompanied by environmental pollution, has led to global environmental problems. To resolve them, it is necessary to select and identify them. Environmental problems were analysed using analysis and comparison methods. The theoretical generalization was used to provide recommendations for the conservation of natural resources. In this article, global environmental problems and possible solutions were consider

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Partsvaniya, V. R. "Management in Moscow energy system: Trends and optimization problems." Studies on Russian Economic Development 23, no. 2 (2012): 145–52. http://dx.doi.org/10.1134/s1075700712020098.

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USACHEVA, IRINA V., ELENA A. GLADKAYA, and SERGEY V. LANDIN. "HYBRID ENERGY STORAGE: PROBLEMS AND PROSPECTS OF ENERGY STORAGE TECHNOLOGIES." Scientific Works of the Free Economic Society of Russia 236, no. 4 (2022): 149–67. http://dx.doi.org/10.38197/2072-2060-2022-236-4-149-167.

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The ever-increasing trend of renewable energy sources (RES) in energy systems of various levels has increased uncertainty in their operation and management. The vulnerability of RES to unforeseen changes in meteorological conditions requires additional resources to support, which are energy storage systems (ESS). However, existing ETSs have limited capacity to meet all the requirements of a modern enterprise energy system. Thus, the hybridization of multiple ETSs to form a composite ETS is a potential solution to this problem. As a flexible energy source, energy storage has many potential appl

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Juraev, Ulugbek Inomiddin ugli, and Anvarzhon Dadakhodzhaev. "THE NEED TO CREATE AN ALTERNATIVE ENERGY SYSTEM IN ELIMINATING ENVIRONMENTAL PROBLEMS." Multidisciplinary Journal of Science and Technology 4, no. 6 (2024): 651–55. https://doi.org/10.5281/zenodo.12597595.

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In this article, the information on the wide range of practical tasks carried out in the field of energy, the effectiveness of the use of alternative energy, the use of renewable sources, which is currently becoming the priority tasks of the state policy, is touched upon

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Zhao, Chuan Hui, Ying Sun, and Ke Jun Li. "Construction of Energy Internet System and Research on its Key Problems." Advanced Materials Research 121-122 (June 2010): 569–73. http://dx.doi.org/10.4028/www.scientific.net/amr.121-122.569.

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Since traditional power is non-renewable and unfriendly to environment, renewable energy power which overcomes defects of traditional energy will gradually replace the conventional thermal power. Based on the utilization problem of renewable energy in Smart Grid, this paper builds an Energy Internet which supports real-time, high-speed, two-way transmission of power data and more renewable energy. The Energy Internet achieves reliable two-way transmission of power and realizes intelligent management of the grid. This paper proposes the concept and characteristics of the Energy Internet and com

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12

Flaksman, A. S. "PROBLEMS AND PROSPECTS OF ENERGY SAVING IN RUSSIA." Vestnik Universiteta, no. 11 (December 27, 2019): 97–100. http://dx.doi.org/10.26425/1816-4277-2019-11-97-100.

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The relevance of the theme of improving the energy efficiency of the Russian economy has been considered. It has been noted, that a large reserve of saving energy resources is available in the field of housing and communal services. The main barriers, hindering the development of energy conservation in Russia, which are divided into three main groups, have been examined. It has been indicated on the lack of effective activity of the Federal energy service companies, to which a reasoned explanation has been given. The ways to eliminate these barriers by increasing direct state support for energ

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13

Strati, Filippo. "Energy consumption in the Italian transport system: problems and perspectives." Transport Reviews 13, no. 4 (1993): 323–50. http://dx.doi.org/10.1080/01441649308716856.

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14

И.В., СКРЯБИНА,, and МОРДИНОВА, М.А. "Energy System and Public Utilities: Current Problems and Development Prospects." Vestnik of North-Eastern Federal University. Series "Economics. Sociology. Culturology", no. 4(28) (December 25, 2022): 115–21. http://dx.doi.org/10.25587/svfu.2022.99.16.014.

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Статья посвящена изучению жилищно-коммунальной сферы ‒ одной из самых энергоемких отраслей экономики Якутии. Объективными причинами этого являются суровый климат, большие расстояния и неразвитая инфраструктура. Данные обстоятельства усугубляются отсутствием экономических стимулов для внедрения энергоэффективных технологий и мероприятий в бюджетной сфере, в жилищной сфере и системах коммунальной инфраструктуры. Анализ показал, что за последние годы в республике большое внимание уделялось развитию коммунального хозяйства, разработаны и реализованы республиканские и муниципальные целевые программ

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Bykov, Dmitry, and Dmitry Efimov. "Power Flow Optimization Problems for Multi-Energy Systems." E3S Web of Conferences 289 (2021): 03001. http://dx.doi.org/10.1051/e3sconf/202128903001.

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Flow distribution calculation is the determination of the values of the state parameters at the nodes and connections of the system that satisfy the Kirchhoff laws. This calculation is necessary to determine the existence and admissibility of operating states in a multi-energy systems, as well as in singleproduct systems. In addition, it is an essential component of solving the problems of optimization of states in order to ensure the minimum cost of production, transmission and distribution of energy resources. Traditionally, a means of such minimization is the redistribution of the load betw

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Wang, Yajing, Zhuangzhuang Qu, and Zhimei Wen. "Development and application status of multi energy complementary energy system." E3S Web of Conferences 252 (2021): 03059. http://dx.doi.org/10.1051/e3sconf/202125203059.

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With the emergence of energy shortage and environmental problems, multi energy complementary has been widely used. This paper first analyzes the current grim energy situation, and points out the necessity of implementing multi energy complementary. Secondly, it introduces the multi energy complementary power generation system and multi energy complementary heating system, gives several common system forms, and introduces the system composition and process. Finally, the development prospect of multi energy complementary system is analyzed and summarized.

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Ahadov, Abdullo Amrullojon o'g'li. "HYDROGEN ENERGY IN SOLVING PROBLEMS OF SUPERCONDUCTIVITY." GOLDEN BRAIN 1, no. 10 (2023): 25–32. https://doi.org/10.5281/zenodo.7832956.

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<em>In the article, the author described the important features of the phenomenon of superconductivity and its connection with hydrogen energy in some specific cases. In the article, some criteria for interrelation of hydrogen energy and superconductivity phenomenon of magnesium diboride superconducting cable as the constituents of a whole system are highlighted.</em>

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18

Makholm, Jeff D., and Laura T. W. Olive. "Data Center Problems." Climate and Energy 41, no. 4 (2024): 21–26. http://dx.doi.org/10.1002/gas.22431.

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“Hyperscale” data centers accompanying the rapid growth of artificial intelligence (AI) is one of the fastest growing uses of electricity in the United States and the rest of the world. Indeed, such growth, with the retirement of dispatchable fossil fuel electricity plants, drives persistent warnings about potential reliability problems for the US power system. As Federal Energy Regulatory Commission's (FERC's) Commissioner Mark Christie warned in late July, to the House Subcommittee on Energy, Climate, and Grid Security.

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19

Kol’nichenko, G. I., Y. V. Tarlakov, and M. S. Usachev. "Planet climate and energy development and cooperation problems." FORESTRY BULLETIN 26, no. 4 (2022): 113–18. http://dx.doi.org/10.18698/2542-1468-2022-4-113-118.

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The article analyzes the influence of various factors (including anthropogenic ones) on the planet’s climate and the transition to carbon-free energy, considering the consequences of the introduction of cross-border carbon regulation for the Russian economy. The possibilities of Russia in cooperation with the West on the development of «green energy» were considered. It was emphasized that Russia, as the largest forest power, while improving its environmental management system, must, first of all, eliminate the gross mistakes of the last decades in the implementation of this system.

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20

Lv, Menghan. "Shared Energy System Construction Scheme of PV Array and Energy Storage Technology." Academic Journal of Science and Technology 2, no. 3 (2022): 31–34. http://dx.doi.org/10.54097/ajst.v2i3.1440.

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My country's ecological and environmental problems are fundamentally the problems of high-carbon energy structure and high-energy-consuming, high-carbon industrial structure, which must must be solved from the source of energy structure and industrial structure transformation and upgrading. Energy consumption patterns for operation, production and living, build a high-level energy and resource-saving society, further strengthen the intensive and efficient use of fossil energy, improve the electrification level of the whole society, and build a cleaner and more efficient green and low-carbon en

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21

Maryam, Shahjehan, Shahjehan Waleed, and Naeem Arbab Muhammad. "Grid-Tied PV System with Energy Optimization." International Journal of Engineering Works (ISSN:2409-2770) 4, no. 10 (2017): 184–89. https://doi.org/10.5281/zenodo.1034467.

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Electricity that is generated from coal, natural gas and fossil fuel has an impact on human health and also causes global warming. The integration of renewable energy sources with the grid is a good solution to these problems. This approach is known as smart grid. Sources of renewable energy such as wind or PV are not able to provide a continuous supply of energy to the load due to periodic or seasonal variations. Connecting these renewable sources to the grid can help in overcoming these problems as the grid will ensure continuous supply of power to the load. The smart grid can help in reduci

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22

Yang, Peng Yu, Li Yuan Zhao, and Zhong Liang Liu. "Beijing Rural Energy Consumption and the Use of Renewable Energy Sources." Applied Mechanics and Materials 389 (August 2013): 85–90. http://dx.doi.org/10.4028/www.scientific.net/amm.389.85.

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The rural energy is one of important factor in energy system, which connects closely with new rural construction. The analysis on Beijing rural energy problems will benefit to solve the national rural energy problems on referential meaning. In this paper, the situation of Beijing rural energy problems in 2007 is analyzed, and the problems which exist in rural energy development are found. Meanwhile, it introduces the policy of Beijing rural energy construction and its target, and suggests that rapid developing the rural renewable energy in order to adjust the structure of Beijing rural energy

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23

Moreira-Mendoza, Jiorge Rolando, María Rodriguez-Gamez, Jean Carlos Andrade-García, Irvin Frank Ponce-Reyes, and Erick Marcelo Pinargote-Castro. "Energy generation system through a thermosolar system in Ecuador." International journal of physical sciences and engineering 9, no. 1 (2025): 1–9. https://doi.org/10.53730/ijpse.v9n1.15618.

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The need to obtain sustainability solutions to promote the use of renewable energy, due to the energy problems that Ecuador presents due to power failures, promotes the search for alternatives for energy generation. The objective of the research was to analyze and design an energy generation system through solar radiation. Where the investigative, descriptive, and analytical methodology was used. The result was that the energy generated through a Thermosolar plant can be used to distribute and cover part of the electrical load that exists in the equator. Furthermore, the implementation of this

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Wu, Yun Na, Jia Li Wang, and Jiang Shuai Li. "Energy Project Portfolio Management System Construction." Advanced Materials Research 211-212 (February 2011): 72–77. http://dx.doi.org/10.4028/www.scientific.net/amr.211-212.72.

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As increasingly complex of the energy project management, traditional project management system is not very suitable for energy projects management. Combined with unique characteristics of energy projects, this paper studies the current state of the energy project development and takes advantage of project portfolio management, builds the energy project portfolio management system which includes energy project advices, selection, evaluation, assessment and implementation. The system solves the complex problems of energy project management, and then ensures that energy projects meet the strateg

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25

Anderson, Max D. "Power System Operator Training Problems." IEEE Transactions on Power Systems 1, no. 3 (1986): 53–59. http://dx.doi.org/10.1109/tpwrs.1986.4334954.

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Apollonskiy, Stanislav Mikhaylovich. "Problems of electromagnetic compatibility in electricity of rail system." Transportation systems and technology 1, no. 2 (2015): 110–26. http://dx.doi.org/10.17816/transsyst201512110-126.

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Problems of electromagnetic compatibility on electrified railways are sharper than in the stationary energy sector. This is due to the following circumstances: 1. Electrified railways has considerable length in space and is usually located in different climatic and in geological zones. 2. In rail transport, as well as any other transport systems, a compact high-performance equipment used (high and low voltage), to a greater degree of exposure to external electromagnetic influences than in the stationary energy sector. 3. All processes (stationary and non-stationary) on an electrified rail, in

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Wang, Jian Yu. "Geothermal Energy Saving Air Conditioning System Research." Advanced Materials Research 912-914 (April 2014): 684–86. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.684.

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The Geothermal air conditioning has been introduced the working principle ,classification and application in this paper , mainly introducing the design of the two kinds air conditioning, refrigeration and air conditioning system . And we put forward own views that the problems existing in the geothermal air-conditioning and the future direction .

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28

Burmatova, O. P. "Some problems of energy transition in Russia." Vestnik NSUEM, no. 4 (January 8, 2025): 62–78. https://doi.org/10.34020/2073-6495-2024-4-062-078.

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The article highlights the problems associated with one of the most important modern environmental challenges, which reflects the opportunities and limitations of the energy transition in Russian conditions. The “green” transformations taking place in the world, primarily in energy systems, growing climate change, and tightening environmental protection requirements determine the relevance and need for a timely and adequate response to the associated risks and threats. The modern energy transition reflects changes in the structure of primary energy consumption through the gradual expansion of

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29

VELIKOROSSOV, Vladimir V., Evgenii V. GENKIN, and Sergei A. FILIN. "Building a new energy security system with the necessary sustainable development." National Interests: Priorities and Security 19, no. 6 (2023): 1188–202. http://dx.doi.org/10.24891/ni.19.6.1188.

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Subject. The article discusses the role of energy security in economic growth. Objectives. The aim is to analyze specific features of the energy security system in the Russian Federation. Methods. The study rests on methods of systems, comparative, structural, and logical analysis. Results. We substantiated the need for conceptualization of the energy security concept, analyzed the four-component concept of energy security, systematized approaches to solving problems related to Russia's energy security. Conclusions. The problems of consumption growth should not hinder the creation of a common

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Peng, Zhang Zhu, and Bo Yin. "Research on Human Implantable Wireless Energy Transfer System." Applied Mechanics and Materials 624 (August 2014): 405–9. http://dx.doi.org/10.4028/www.scientific.net/amm.624.405.

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Advances in medical technology and promote the human implantable wireless energy transfer devices are widely used. Traditional human implantable wireless energy transfer device have some problems of low charging efficiency, blindly charging and data transmission difficult. On the basis of the conventional electromagnetic induction, in this paper, we proposed the use of magnetically coupled resonant way on human implantable device for charging, this method can greatly improve the efficiency of wireless charging. The system gets the CPU’s unique ID of human implantable devices to identifying the

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Falcão, Djalma M., Sun Tao, Glauco N. Taranto, et al. "Case Studies of Battery Energy Storage System Applications in the Brazilian Transmission System." Energies 17, no. 22 (2024): 5678. http://dx.doi.org/10.3390/en17225678.

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This paper presents the preliminary results of studies aiming to use a battery energy storage system (BESS) in the Brazilian transmission system. The main objective of the BESS is to solve congestion problems caused mainly by the large increase in variable renewable generation in certain system areas. The studies were conducted based on actual forecasted system scenarios using a full representation of the electric grid available from the Brazilian system operator data base. In this work, only the steady-state modeling was considered as this may be the first stage in the assessment of a new tec

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Batechko, N., S. Shostak, R. Bereziuk, and V. Shostak. "Methodology of system analysis for research of energy efficiency problems in Ukraine." Energy and automation, no. 5(57) (November 24, 2021): 62–74. http://dx.doi.org/10.31548/energiya2021.05.062.

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The results of the research on the application of a systematic approach to solving energy efficiency problems in Ukraine are presented. The reasons for restraining the level of energy efficiency are highlighted, among which are the hollowing: ineffective policy of incentives to reduce energy consumption; lack of investments and conditions for their attraction; inefficient tariff and price policy in the energy sector of the economy, non-compliance with regulations, programs of various levels and measures. The need to increase the level of energy efficiency in Ukraine is substantiated and a syst

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33

Marchenko, Galina, and Svetlana Murzina. "Social aspects of environmental problems." E3S Web of Conferences 458 (2023): 06009. http://dx.doi.org/10.1051/e3sconf/202345806009.

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The social aspects of environmental problems are no less important for preserving the quality parameters of the environment than numerous energy and technical aspects. In the context of increasing environmental problems and difficulties in the relationship between man and nature, it seems extremely important to appeal to the consciousness and thinking of man and humanity. An effective means of influencing a person’s system of beliefs and values is education. Therefore, the article’s appeal to pedagogical potential as one of the significant means of solving environmental problems seems quite re

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Kapustina, Larisa, Mushfig Agababayev, and Andrei Drevalev. "Problems and prospects of green energy." E3S Web of Conferences 537 (2024): 07007. http://dx.doi.org/10.1051/e3sconf/202453707007.

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The article considers problems in green energy development focusing on wind and solar power, identifies the effects of the production and the use of electric vehicles. The authors analyze global value chains in green energy and highlight China’s dominant role in extraction and processing of raw materials, as well as production of wind turbines, solar panels and lithium-ion batteries. The green energy sector faces several challenges, including underdeveloped infrastructure for clean energy transmission, high costs and large area requirements of wind and photovoltaic power stations as well as th

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Gavrilova, A. A., E. A. Matveeva, and A. G. Salov. "System Analysis and Solution of Energy Efficiency Problems in Machine-Building Production." MATEC Web of Conferences 346 (2021): 03057. http://dx.doi.org/10.1051/matecconf/202134603057.

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The article discusses application of system analysis to identify and solve the problems of energy efficiency of machine-building enterprises. The increase in the efficiency of a machine-building enterprise is influenced by many factors, among which tariffs and prices for energy services have a significant impact. The increase in tariffs for these services has a direct impact on the increase in cost. Energy efficiency objectives also include: high energy capacity of products; insufficient efficiency of generation, transportation and distribution of energy resources; low reliability of power sup

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Manasi, Pendse, and Vaishali. S. Jadhav Prof. "Cost Effective Energy Monitoring System." International Journal of Engineering Research & Science 5, no. 4 (2019): 18–23. https://doi.org/10.5281/zenodo.2654558.

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<strong><em>Abstract</em></strong><strong>—</strong> <em>Remote energy meter monitoring is an advanced energy meter formulated by our own which will overcome the problems faced in conventional metering system such as human interference which leads to incorrect billing. In this energy meter advanced technologies such as ARM microcontroller, Raspberry Pi, ADC, Seven segment display (SSD), Cloud (Thing Speak) have been used. This is the new device which is using CY8C4247AZI-M485 ARM Microcontroller and will display voltage, current, and power on SSD and send data on IoT cloud Platform throu

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Verlan, A., and Jo Sterten. "Digital Correction Filter in Problems of Recovery of Input Signals and Observing Systems’ Data in Energy Objects." Mathematical and computer modelling. Series: Technical sciences, no. 22 (November 26, 2021): 31–38. http://dx.doi.org/10.32626/2308-5916.2021-22.31-38.

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The task of signal recovery is one of the most important for auto-mated diagnostics and control systems of an energy object. When solv-ing the inverse problems of recovering signals, images and other types of data, spectral distortions and losses occur (in some cases, very sig-nificant ones). They are primarily stipulated due to ill-posedness of these problems, which is the result of loss of information about the original signal due to strong (and even complete) suppression in the observed signal of a part of spectral components, which become indis-tinguishable against the background of errors

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38

Sandu, Maxim. "Problems and prospects for the strategic development of the world energy system." EcoSoEn, no. 3-4 (December 2022): 64–72. http://dx.doi.org/10.54481/ecosoen.2022.3-4.09.

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In the presented article modern challenges, problems and prospects for strategic development of global energy system are described. The presence of some energy problems serves as starting points for improvement and emergence of trends associated primarily with technological innovations in extraction, transportation and supply of energy resources. At the moment the global energy picture of the world clearly demonstrates the general trends in the development of globalization processes. Results of research of policies and strategies of provision of energy security of regions of the world demonstr

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Aksenov, Alexey, and Alina Lysak. "PROBLEMS OF IMPROVING THE LABOR STANDARDING SYSTEM IN AN ENERGY COMPANY." Science & World 2023, no. 4 (2023): 66–70. http://dx.doi.org/10.26526/2307-9401-2023-4-66-70.

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The article presents the features of the labor standardization system and discusses the problems of its improvement at an energy industry enterprise. An assessment was made of the state of this process in the human resource management system in the branch of PJSC Rosseti - Rostov PMES. The main directions for improving labor standards in an energy company have been developed

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Gill, Amandeep, Pushpendra Singh, Jalpa H. Jobanputra, and Mohan Lal Kolhe. "Placement analysis of combined renewable and conventional distributed energy resources within a radial distribution network." AIMS Energy 10, no. 6 (2022): 1216–29. http://dx.doi.org/10.3934/energy.2022057.

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<abstract> <p>System islanding, relay tripping, and reverse power flow-like issues in the distribution network are all caused by randomly placed distributed energy resources. To minimize such problems, distributed energy resource (DER) optimal placement in the radial distribution network (RDN) is essential to reduce power loss and enhance the voltage profile. When placing DERs, consideration of constraints like size, location, number, type, and power factor (PF) should be considered. For optimal placement, renewable and nonrenewable DERs are considered. The effects of different typ

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Darmawi, Ir. "Tidal Current Turbine and Related Development Problems for Indonesia." Applied Mechanics and Materials 575 (June 2014): 610–14. http://dx.doi.org/10.4028/www.scientific.net/amm.575.610.

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Tidal Current Turbine will be an important device of renewable energy in the upcoming decades. Hydro energy, wind energy and solar energy will mostly utilized in Indonesia in order to fulfill the energy of remote villages and remote islands and optimizing the domestic energy availability. Regarding the small scale field research conducted in the year 2012 and 2013 in Indonesia, transmission system and low rpm alternator are encountered as a significant problems in order to develop the hydro and wind turbine engine. Both parts are not yet produced locally in Indonesia. Domestic production in st

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Jia, Yakun. "Research status and prospect of key problems of integrated energy system optimization model." Advances in Engineering Technology Research 5, no. 1 (2023): 383. http://dx.doi.org/10.56028/aetr.5.1.383.2023.

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In the traditional energy system, the operation structure of various energy sources is single, the coupling degree is not high, the efficiency of energy utilization is low, and the waste of clean energy appears, so the concept of comprehensive energy system arises at the historic moment.This paper firstly introduces the composition of the integrated energy system, summarizes the research status of the network power flow model of electric power, thermal power and natural gas, and summarizes the optimization operation method, leading to the integrated energy system source-source optimization mod

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Bushuev, V.V., and V.S. Golubev. "Structural energy and life." Journal of Environmental Earth and Еnergy Study (JEEES), no. 2021-02 (July 13, 2021): 26–44. https://doi.org/10.5281/zenodo.5094518.

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The article deals with current philosophical problems of the world order and the connection of energy and life in the surrounding world. Based on the use of a systematic approach to the study of the current problems of the modern world order, the author introduces the philosophical concept of "structural" energy as a characteristic of qualitative changes in the evolving system.

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Sribna, Yevheniia, Victor Stupnytskyi, and Nina Stupnytska. "PROBLEMS AND TRENDS OF UKRAINE'S TRANSITION TO THE EU ENVIRONMENTAL AND ENERGY SYSTEM." Bulletin National University of Water and Environmental Engineering 1, no. 101 (2023): 204–15. http://dx.doi.org/10.31713/ve1202318.

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The article is devoted to the problems and trends of the transition to the ecological and energy system of the EU countries and Ukraine. It examines the essence and necessity of such a transition, as well as the transition levels at which countries are located and the corresponding energy clusters. The purpose of the scientific research is to analyse the levels of the energy transition of the countries of the European Union, to identify the problems and trends of their development, as well as to propose possible ways to further improve the energy policy of Ukraine in order to achieve environme

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Huifang Pan, Huifang Pan, and Qi Zhu Huifang Pan. "Outage Performance of Multi-relay System with Energy Harvesting and Storage." 網際網路技術學刊 23, no. 6 (2022): 1213–23. http://dx.doi.org/10.53106/160792642022112306005.

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<p>This paper analyzes the performance of a two-hop half-duplex multi-relay system based on energy harvesting. The relay has energy harvesting and storage functions, and adopts an adaptive AF/DF transmission strategy and PS protocol. Based on three relay selection schemes, namely Energy Optimal Selection (EOS), Channel Gain Optimal Selection (GOS), and Energy and Channel Gain Optimal Selection (EGOS), the outage performance is compared. First, the finite state Markov chain (FSMC) is used to model the energy arrival and use status of each relay, and the energy transfer steady-state matrix

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Pryshchenko, Svitlana, Yevgen Antonovych, and Andryi Petrushevskyi. "A visualization of the energy-saving problems." E3S Web of Conferences 250 (2021): 07005. http://dx.doi.org/10.1051/e3sconf/202125007005.

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This paper focuses on the visualization of eco problems and the latest green technologies, including energy-saving. Today, there are four color-graphic means in advertising: photography, graphics (drawing or computer graphics), font compositions, and often a combination of these. Our study considers the imagery and stylistics of eco poster as a type of public advertising, and ascertains that in the subject of energy-saving a light bulb as the visual stereotype prevails. The paper indicates the importance of system design thinking, the use of creative approaches in the educational process of de

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Tsvirko, S. E. "PROBLEMS OF PUBLIC DEBT MANAGEMENT SYSTEM IN RUSSIA." Strategic decisions and risk management, no. 6 (October 25, 2014): 56–63. http://dx.doi.org/10.17747/2078-8886-2013-6-56-63.

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The problems of the Russia’s debt management are revealed. Evolution of the public debts’ problem of the Russian Federation including the question of its interaction with private debts is discussed. Risks in debt sphere are analyzed. Specific features of the Russian economy such as the dependence on world energy prices, low efficiency of public expenditures, rapid growth of internal public debts and external quasi-sovereign and private debts are defined. Principles of debt management and areas of improvement in the system of Russia’s debt management were defined.

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Ibănescu, M., and R. Ibănescu. "New approach in solving derivative causality problems in the bond-graph method." IOP Conference Series: Materials Science and Engineering 1235, no. 1 (2022): 012053. http://dx.doi.org/10.1088/1757-899x/1235/1/012053.

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Abstract From the bond-graph model of a dynamic system, the state equations can be obtained. When the system contains only energy storing elements in integral causality, the system of state equations is immediately and directly determined. When the model contains at least one energy storing element in derivative causality, the resulted system of differential-algebraic equations arises some difficulties in finding the final form of the system of state equations. The work presents a new method of deducing the state equations in case of bond-graph models with one, or several energy storing elemen

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Fan, Xinyue. "Problems and prospects of rural energy transformation in China." Applied and Computational Engineering 70, no. 1 (2024): 102–5. http://dx.doi.org/10.54254/2755-2721/70/20240976.

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In recent years, Chinas rural energy supply security capacity has been enhanced, and the adjustment of energy structure has achieved remarkable results, but there are still some problems: The low utilization rate of waste energy in rural areas restricts the comprehensive utilization of resources and environmental protection, the level of rural energy consumption is always in the stage of development, and the lagging construction of rural energy socialized service system restricts the development of rural energy. In view of the problems and challenges faced by Chinas rural energy development, f

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Włodarczyk, Renata, Robert Zarzycki, and Zbigniew Bis. "Combined system of energy generation from biomass and solar energy." E3S Web of Conferences 49 (2018): 00132. http://dx.doi.org/10.1051/e3sconf/20184900132.

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The study discussed the design and principle of operation of an intelligent system that uses renewable energy sources (RES) in the form of biomass and solar energy. The aim of the system is to supply heat to public utility buildings in Częstochowa, Poland. The system of renewable energy conversion includes boilers fuelled by biomass in the form of pellets and evacuated tube solar collectors. An additional equipment for the system is buffer tanks, computer-aided monitoring of operating parameters of the system and calorimeters with the system of automation and control of the system operation. T

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