scholarly journals Case Study of Power Plants in the Slovak Republic and Construction of Microgrid and Smart Grid

2021 ◽  
Vol 11 (11) ◽  
pp. 5252
Author(s):  
Róbert Štefko ◽  
Zsolt Čonka ◽  
Michal Kolcun
Keyword(s):  
Smart Grid ◽  
Power Plants ◽  
Slovak Republic ◽  
New Technology ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Actual State ◽  
Transmission Systems ◽  
Current State ◽  
Reduce Emissions

To reduce emissions worldwide, decarbonization has also affected for power engineering and its conventional methods of power generation, distribution, and transmission. This fact affects not only the production of power and supply itself, but also other parts related to it, namely systems for the protection of electricity generation facilities and the location of faults in distribution networks and transmission systems. Is this new technology of renewable energy sources (RES) mastered enough to be able to replace traditional methods of energy generation reliably and safely? If we can answer the previous question, we could proceed to the next phase of putting these technologies into practice, considering the actual state of distribution networks and transmission systems. The aim of the article will be to evaluate the current state of systems and production sources of electricity in the Slovak Republic and to provide a better insight and suggestions for rebuilding current networks on a smart grid. The proposals will also include models of some RES in the Matlab/Simulink software.

WIND-DIESEL INSTALLATIONS FOR ISOLATED FAR NORTH AREAS

2020 ◽  
Author(s):  
Александр Григорьевич Комков ◽  
Александр Константинович Сокольский
Keyword(s):  
Energy Supply ◽  
Alternative Energy ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Economic Potential ◽  
Far North ◽  
Alternative Energy Sources ◽  
Current State ◽  
Solar Power Plants

В статье рассмотрено современное состояние энергоснабжения и перспективы развития альтернативных источников энергии на территории Крайнего Севера. Отмечено, что несмотря на острую потребность во внедрении возобновляемых источников энергии, установленные мощности всех ветряных и солнечных электростанций в регионе не превышают 7-8 МВт. Также в работе рассчитаны технический и экономический потенциал ветровой энергии региона, на основании которых подобрана наиболее эффективная установка. The article discusses the current state of energy supply and the prospects for the development of alternative energy sources in the Far North. It is noted that despite the urgent need for the introduction of renewable energy sources, the installed capacities of all wind and solar power plants in the region do not exceed 7-8 MW. Also, the technical and economic potential of the region’s wind energy was calculated based on which the most efficient installation was selected.

scholarly journals Mitigating power quality disturbances in smart grid using FACTS

2021 ◽  
Vol 22 (3) ◽  
pp. 1223
Author(s):  
Yahia M. Esmail ◽  
Ali H. Kasem Alaboudy ◽  
M. S. Hassan ◽  
Gamal M. Dousoky
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Power Quality ◽  
Smart Grids ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Static Synchronous Compensator ◽  
Power Quality Disturbances ◽  
Flexible Alternating Current Transmission ◽  
Power Quality Conditioner

Power quality (PQ) assurance is a vital part of electrical distribution networks. There are many advantages and benefits of improving PQ, especially in the modern/smart grid. Smart grid (SG) has a lot of complicated and sensitive electrical components (non-linear loads) in addition to renewable energy systems (wind-solar) that may also be a source of PQ disturbances. PQ problems harm personal life and national production. Static synchronous compensator (STATCOM) and unified power quality conditioner (UPQC) are among the fastest response flexible alternating current transmission systems (FACTS) installed in smart grids to mitigate power quality disturbances such as voltage fluctuations, sag, swell, and harmonics. In this research, STATCOM and UPQC are designed and simulated in MATLAB/Simulink to overcome PQ-related disruptions in smart grids. Accordingly, the differences between the proposed two solutions are highlighted across this research and renewable energy sources' reliability during faults. Therefore, the reader will be able to choose the appropriate FACTS devices. This study emphasizes the extent of the smart grid need for the FACTS. As per the given results of this study, STATCOM and UPQC have shown exemplary performance in the PQ improvement investigations conducted in the context of smart/modern grids.

scholarly journals Special Aspects of Using the Wind Power Plants In the Power Supply System

2021 ◽  
Vol 288 ◽  
pp. 01003
Author(s):  
Saken Koyshybaevich Sheryazov ◽  
Sultanbek Sansyzbaevich Issenov ◽  
Ruslan Maratbekovich Iskakov ◽  
Argyn Bauyrzhanuly Kaidar
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Wind Power ◽  
Wind Turbines ◽  
Power Plants ◽  
Power Grid ◽  
Renewable Energy Sources ◽  
Power Grids ◽  
Energy Sources ◽  
Wind Power Plants

The paper describes special aspects of using the wind power plants (wind turbines) in the power grid. The paper provides the classification and schematic presentation of AC wind turbines, analyzes the role, place and performance of wind power plants in Smart Grid systems with a large share of renewable energy sources. The authors also reviews a detailed analysis of existing AC wind turbines in this paper. Recommendations are given for how to enhance the wind power plants in smart grids in terms of reliability, and introduce the hardware used in the generation, conversion and interface systems into the existing power grid. After the wind power plants had been put online, the relevance of the Smart Grid concept for existing power grids was obvious. The execution of such projects is assumed to be financially costly, requires careful study, and development of flexible algorithms, but in some cases this may be the only approach. The analysis of using wind turbines shows that the structural configuration of wind power plants can be based on the principles known in the power engineering. The approaches may differ, not fundamentally, but in engineering considerations. it is necessary to point out that the method of controlling dual-power machines is quite comprehensive so that their wide use will face operational problems caused by the lack of highly professional specialists in electric drives. Therefore, it seems advisable to use square-cage asynchronous generators in wide applications. The paper shows that as the renewable energy sources are largely used in power grids, there is an issue of maintaining the power generation at a required level considering the variability of incoming wind energy. This results in the malfunctions in the operation of relay protection devices and emergency control automatics (RP and ECA), and the complicated control. Also, the standards of the CIS countries and regulatory documents miss the requirements for the wind turbine protections, taking into account their specialty causing the inefficient standard protective logic, which does not work correctly in a number of abnormal and emergency operating modes, and especially Smart Grid in power grids.

An overview of technologies and costs of carbon dioxide capture in power generation

2009 ◽  
Vol 223 (3) ◽  
pp. 201-212 ◽  
Author(s):  
J Davison ◽  
K Thambimuthu
Keyword(s):  
Climate Change ◽  
Greenhouse Gases ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Combined Cycle ◽  
Current Status ◽  
Construction Costs ◽  
Intergovernmental Panel ◽  
Reduce Emissions ◽  
Fuel Costs

There is growing concern about climate change resulting from increasing concentrations of greenhouse gases (GHGs) in the atmosphere. Several techniques including efficiency improvements and increased use of renewable energy sources will be needed to limit emissions of greenhouse gases to the atmosphere. Another technique that can help to reduce emissions substantially is capture and storage of CO2 (CCS). This article will describe the main technologies that can be used to capture CO2 from coal- and gas-fired power plants, including postcombustion capture, precombustion capture, and oxy-combustion. The current status of these technologies, their performance and costs, and possible future developments will be reviewed. The article considers changes in CO2 capture technologies, fuel costs, and plant construction costs that have occurred since the Intergovernmental Panel on Climate Change (IPCC) Special Report on CCS was written. The article will draw on work carried out by the IEA Greenhouse Gas R&D Programme and other leading organizations working in this field. The analysis concentrates on coal-based gasification combined cycle power plants with precombustion capture and pulverized coal combustion plant with postcombustion capture.

scholarly journals Cloud-Based Application for Smart Grid Simulation

2016 ◽  
Vol 44 (2) ◽  
pp. 81-83
Author(s):  
Szabolcs Tar ◽  
Attila Fodor
Keyword(s):  
Renewable Energy ◽  
Smart Grids ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Decentralized Generation ◽  
Grid Simulation ◽  
New Energy ◽  
Complex Solutions ◽  
Grid Management

Abstract This study provides an overview of the content of an R&D project for increasing the efficiency of smart grids to analyse the energy market, consumption, generation, and renewable energy usage. The new energy participants, for example decentralized generation, dynamic consumption, and weather-dependent power plants, are facing challenges. This project offers solutions to these challenges: modelling of distribution networks, forecasts of renewable energy sources distributed generation (RES-DG), micro-grid management and responses to demand in new, complex solutions. A hardware device is being developed for smart grids and security modules to enhance IT security.

The role of smart grid in integrating the renewable energies in Slovakia

2018 ◽  
Vol 29 (2) ◽  
pp. 300-312 ◽  
Author(s):  
František Janíček ◽  
Milan Perný ◽  
Vladimír Šály ◽  
Michal Váry ◽  
Juraj Breza ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Slovak Republic ◽  
International System ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
The European Union ◽  
European Union Policy ◽  
Electric Network ◽  
System Of Units

Implementation of renewable energy sources into the electric network is one of the current essential requirements. The process is assumed to be assisted by smart grid solution. The Slovak Republic is obliged to increase the total share of renewable energy to 14 and 24 % (international system of units and ISO 31–0) in electricity generation in 2020 as a result of the European Union policy. This fact has an undeniable impact on the electric network and the situation needs to be solved comprehensively. Moreover, production from renewable energy sources (photovoltaic, wind energy and others) is often unpredictable in nature and therefore concentrated effort on effective management system and planning is inevitable. Monitoring of the real production from renewable energy sources and comparison with simulations and predictions are part of a systematic approach to intelligent networks and their components. The smart grid concept presented here takes into account the technical aspect. Moreover, the issue of the economic and political framework is discussed in this paper. The major progress in implementing the smart grid concept in Slovakia is made in the field of smart metering.

scholarly journals Effect of Renewable Energy and Electric Vehicles on Smart Grid

2015 ◽  
Vol 2 (1-2.) ◽  
Author(s):  
Alaa A. Zaky
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Electric Vehicles ◽  
Power Plants ◽  
Distribution Systems ◽  
Renewable Energy Sources ◽  
Future Research ◽  
Electricity Grid ◽  
Vehicle To Grid ◽  
Energy Technologies

Global electricity demands are increasing at rapid pace. Energy supply, their usage and technologies involved need to be more economical, environment friendly and socially sustainable. Efforts are being done all over the globe to reduce this green house effect; and renewable energy technologies to combat climate changes, which require extensive changes to the current electricity generation and distribution systems. To meet this goal, it is required to optimize the grid operations and available resources to meet the ever increasing energy demands in an efficient, effective and environment sustainable way. So strong and huge interests on smart grid have increased extensively in recent years around the world. This scenario could be a promising reason for future research in this area. This next form of electricity grid will be able to manage various parts of power production from power plants to the customers. Renewable energy sources appear strongly in smart grid so in this paper the effect of this sources will be studied also electric vehicles have a great effect on smart grid infrastructure ,communication and control this paper will discuss this effect if it come from the electric vehicle mode or vehicle to grid mode.

scholarly journals The smart grid concept applied to an industrial electrical system

2021 ◽  
Vol 12 (4) ◽  
pp. 2140
Author(s):  
Isidro Fraga Hurtado ◽  
Julio Rafael Gómez Sarduy ◽  
Percy Rafael Viego Felipe ◽  
Vladimir Sousa Santos ◽  
Enrique Ciro Quispe Oqueña
Keyword(s):  
Smart Grid ◽  
Power Systems ◽  
Information And Communication Technologies ◽  
Smart Grids ◽  
Renewable Energy Sources ◽  
Demand Management ◽  
Electrical Power ◽  
Distribution Networks ◽  
Industrial Sector ◽  
Reactive Compensation

Smart grids can be considered as a concept that integrates electrical, automatic control, information, and communication technologies. This concept constitutes a fundamental complement in the integration of renewable energy sources in electrical power systems. Although its application is fundamentally framed in transmission and distribution networks, it could also be implemented in industrial electrical systems. This article aims to analyze the advantages of implementing solutions based on smart grids in the industrial sector. Likewise, the results of its implementation in the large industry in the province of Cienfuegos, Cuba are presented. Specifically, reactive compensation, voltage, and demand management controls were integrated into a Supervision, Control, and Data Acquisition system forming a smart grid. It is shown that, in industries where infrastructure and equipment conditions exist, it is possible to successfully implement solutions with the functionalities and benefits inherent to smart grids.

scholarly journals Biogas Stations in Slovakia – Current State

2020 ◽  
Vol 7 (4) ◽  
pp. 79-85
Author(s):  
František Janíček ◽  
Milan Perný ◽  
Vladimír Šály ◽  
Jana Némethová
Keyword(s):  
Renewable Energy ◽  
Statistical Data ◽  
Slovak Republic ◽  
Renewable Energy Sources ◽  
Field Research ◽  
Electricity Production ◽  
Energy Sources ◽  
Separate Part ◽  
Current State ◽  
Technical Specifications

The paper focuses on the use of biomass in the conditions of the Slovak Republic. The importance and position of biomass within renewable energy sources is highlighted in the introduction. Documents such as laws, studies, and strategies which have been developed with the aim to increase the share of renewable energy sources within the energy mix are listed here. The issue of biogas and its possible sources in the Slovak Republic was also solved. An important part of the paper is the presentation of the current statistical data concerning to the number of biogas stations and also information about the material used for gasification purposes in SR. A separate part of the contribution consists of the field research results focused on selected biogas stations in western Slovakia. We provide basic technical specifications, biomass suppliers and statistical data about heat and electricity production for each station. Selected stations were located in villages: Smolinské, Malý Cetín, Ružindol, Chynorany and Kolíňany.

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