Current State and Development of Renewable Energy

Budko, V.; Kudria, S.; Пепелов, А. В.

doi:10.15518/isjaee.2017.04-06.130-141

Cited by 2 publications

(1 citation statement)

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“…Багато українських і зарубіжних вчених досліджували перехід на відновлювальні джерела енергії, розглядаючи різні питання відновлювальних джерел енергії (ВДЕ) з точки зору екології, енергобезпеки, економічної ефективності та соціального ефекту. Серед зарубіжних вчених -В. Елістратов [2] У статті детально проаналізовано наукові праці за авторством таких видатних українських вчених, як: В. Будько [5], С. Кудря [3], М. Кузнєцов [4], М. Назаров [6] та ін., які займалися дослідженням використання відновлювальних джерел енергії.…”

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The Paradigm of Economic Energy Security by Orientation on Renewable Energy Sources

Derkach

Chebanenko

2020

WOF

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Introduction. The topic of renewable energy today is one of the most relevant and requires consideration from the point of view of all components of this process, namely economic, financial, environmental, technological, and others. The transition to renewable energy is already irreversible today since natural resources are depleted, fuel prices are the subject to significant fluctuations, and the stable growth of the national economy is ensured by energy security. The purpose. The purpose of the article is to analyze the volume of global energy consumption, to analyze the impact of the introduction of renewable energy sources on the development of the national economy, to ensure energy security with the depletion of hydrocarbon resources and a slight diversification of their suppliers. Results. Today the Ukrainian economy is the most energy-intensive. Unstable energy prices are a threat both to the global economy and to each country separately. Therefore, in the event of a decrease in the supply of traditional energy resources, the importing countries experience the greatest difficulties. The existing tendency in Ukraine to increase the consumption of traditional energy sources, combined with the absence of a targeted policy aimed at reducing the volume of environmental pollution, will lead to an increase in negative economic consequences. The advantage of renewable energy sources is their equal distribution throughout the country (with the exception of water resources). This feature leads to the formation of one of the main characteristics of power systems based on renewable energy sources, namely, their decentralization. It should be borne in mind that the world energy market is made up of state and non-state participants. Non-state participants are showing an upward trend. However, the state should have the greatest influence on the national energy sector. Renewable energy is an area that, in the Ukrainian context, depends on state support, namely economic and administrative incentives. The dynamics of the development of renewable energy should be combined with the balanced development of the fuel and energy sector in Ukraine. Conclusions. The process of development and transition to renewable energy needs a systematic approach. Both qualitative and quantitative approaches are needed to assess the transition to renewable energy. An effective strategy for the transition to the introduction of renewable energy technologies should be justified by economic feasibility. The transition from traditional energy to renewable sources should lead to energy security, which contributes to stable economic growth, political independence, and improving the quality of the environmental component.

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The Paradigm of Economic Energy Security by Orientation on Renewable Energy Sources

Derkach

Chebanenko

2020

WOF

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On Potential of Using Wind Turbines With Coaxial Wind Rotors for Autonomous Power Supply

Knysh

2018

Alʹternativnaâ ènergetika i èkologiâ

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The paper presents the experimental research results for the horizontal-axis wind turbine with coaxial wind rotors. It is assumed that such coaxial layout of the wind turbine can be used for designing of the wind energy systems with relatively low capacity and limited location area since the coaxial systems have advantages in overall dimensions and maximum using of the swept area. Possibility of coaxial horizontal-axis wind turbines usage is determined by positive or negative effect of turbines on each other. Literature review shows that closely spaced wind turbines can generally improve flow characteristics under certain conditions and consequently increase wind energy system efficiency. We have carried out the experiments in T-5 wind tunnel with two coaxial model two-bladed wind turbines which rotate in opposite directions. The generator of the first turbine and first turbine itself are located on the same shaft in the test section of wind tunnel. The second generator is in a lower compartment of the experimental setup and is connected by the transmission. We have measured the dynamic, energy and frequency characteristics of wind energy systems based on created experimental setup. A Pitot tube and automatic metering devises have measured the dynamic parameters and energy performance respectively. A frequency counter has saved all of the data obtained with the laser frequency measurement technique. The experiment has some specific technical features so the data received need to be corrected. The coaxial wind turbine power has decreased in comparison to isolated wind turbine at low wind speed. The return flows reinforce turbulence so wind speed falls. If wind speed increases, the impact of the return flows decreases, the coaxial wind turbine capacity significantly grows and exceeds isolated turbine capacity. The possibility of using wind turbines with coaxial wind rotors for autonomous power supply is shown. Such wind turbines are perspective and require more detailed analysis.

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Current State and Development of Renewable Energy

Cited by 2 publications

References 0 publications

The Paradigm of Economic Energy Security by Orientation on Renewable Energy Sources

The Paradigm of Economic Energy Security by Orientation on Renewable Energy Sources

On Potential of Using Wind Turbines With Coaxial Wind Rotors for Autonomous Power Supply

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