Correlation of Day-Ahead Electric Energy Market Price with Renewable Energy Sources Generation and Load Forecast

2021 ◽  
pp. 99-109
Author(s):  
Amer Aščerić ◽  
Miloš Pantoš ◽  
Marko Čepin
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Market Price ◽  
Electric Energy ◽  
Energy Sources ◽  
Energy Market ◽  
Load Forecast

Electricity sector development as a component of energy of Ukraine

2020 ◽  
Author(s):  
V.P. Glamazdin ◽  
O.V. Melnyk ◽  
V. M. Tonkogolosiuk
Keyword(s):  
Renewable Energy ◽  
Electric Power ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Electric Power Industry ◽  
Green Energy ◽  
Electricity Sector ◽  
Energy Sources ◽  
Energy Market ◽  
Generation Structure

The study analyzed the current state and perspective directions of development of electric power complex of Ukraine. The problematic issues that have accumulated over many decades are highlighted. In particular, one of the main threats to the normal functioning of the electric power industry is a small proportion of maneuvering, peak and half-peak capacities. An analysis of the main events that took place during 2018-early 2020 in the electricity sector of Ukraine was conducted. The main tasks defined by the Energy Strategy of Ukraine for the period up to 2035 were considered. The analysis of legislative initiatives, in particular, requirements and improvement of the law “On Electric Energy Market”, the principles of work and basic requirements for the created Electricity Transmission System Operator was carried out. The reasons for the Guaranteed Buyer’s debt on electricity market to producers working at the “green” tariff have been determined. An analysis of the so-called “Gerus amendment” was carried out. This amendment allowed import of electricity from Russian Federation. The main threats to the introduction of market relations in a monopolized electric energy market were also identified. An analysis of the development of renewable energy sector was conducted. Since 2015, sector has increased its installed capacity from 701 megawatt to 5.4 gigawatt, or almost eight times. The main threats that can be realized with an increase in green energy capacities were analyzed. It was determined that the cost of supplying one kilowatt-hour of electric energy from renewable energy sources is much higher than from other sources. As a result of this, the share of energy from renewable energy sources in the tariff structure is many times higher than the share in the generation structure. A review of legislative innovations to limit the development of renewable energy sources was conducted.The article also analyzed data of the State Statistics Service of Ukraine regarding the dynamics of electricity prices for all categories of consumers, taking into account transportation and distribution services

How the energy market will change water services

2011 ◽  
Vol 6 (3) ◽  
Author(s):  
Eilard Jacobs
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
20Th Century ◽  
21St Century ◽  
Renewable Energy Sources ◽  
Green Buildings ◽  
Water Utilities ◽  
Energy Sources ◽  
Energy Market ◽  
Water Services

In the 20th century energy and water services are provided by large centralized systems. The development of renewable energy sources, especially solar energy, however generates a transition towards more decentralized services in the 21st century. The development of green buildings and other off the grid solutions facilitates a growing demand for these decentralized solutions, not only for energy but also for water services. It is the challenge for water utilities to be a player this development.

scholarly journals CALCULATION OF OPTIMAL PARAMETERS FOR STORAGE AND RENEWABLE ENERGY SOURCES IN ISOLATED ENERGY SYSTEMS

2021 ◽  
pp. 91-95
Author(s):  
Mykhailo Syvenko ◽  
Oleksandr Miroshnyk
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Power Supply ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Energy Sources ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Supply Systems

A detailed substantiation of the use of electric energy storage devices in the presence of generators on renewable energy sources in the power supply system is given. The dependence of the storage parameters on the composition and priority of generation in the system is investigated. The solution of the problem of determining the parameters of electricity storage devices by means of purposeful simulation of generation parameters is considered. The results of the choice of power and capacity of the energy storage using technical and economic indicators are shown. Optimal parameters of electric energy storage devices as one of the most important means of ensuring the activity of isolated power supply systems together with selection of generating devices are determined. The results of calculations of capacity of renewable energy sources in isolated power supply systems in combination with classical energy sources are given. The necessity of using the principle of activity of the distribution electric network and the possibility of its realization is demonstrated. The optimal storage capacity as a function of the share of renewable generation, the non-integrated energy produced by renewable sources and the total storage capacity are plotted for several isolated systems. The main points of the used model of the power supply system of isolated networks are given. In the studied isolated power supply systems, wind power plants and solar power plants, which have significant unpredictability of generation, are used as generation based on renewable energy sources. The problem of undersupply of electricity to the grid by stepwise increase of generation is analysed. The results of the multi-step selection of power and energy consumption of electricity storage are determined by technical criteria.

scholarly journals Reducing Hybrid Power Plant Power Losses by Balancing the Load in the Network on the Generation and Consumption Side

2020 ◽  
Vol 20 (3) ◽  
pp. 65-77
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Energy Sources ◽  
Energy Losses ◽  
Hybrid Power ◽  
Storage Technology ◽  
Hybrid Power Plant ◽  
Low Efficiency

An increase in the share of renewable energy sources characterized by intermittent generation leads to a decrease in the quality of electricity and the need to balance the load on the network. The methods used today for balancing the load on the generation side, as well as the use of energy storage technology, do not always provide an effective solution to the balancing problem. This is especially evident when traditional generators are transferred from the base load electricity sources to the reserve ones. The main issue is the increased electric energy losses due to the low efficiency of the power storage technology. Using the most advanced hybrid power plant Gorona del Viento (El Hierro island, Canary archipelago, Spain), which includes traditional and renewable energy sources, as reference, we are describing the methods of balancing the load on the network, which includes balancing, both the electricity generation and consumption. Using the calculation models of the hybrid power plant operating modes, the possibility of implementing various load balancing strategies on the consumption side has been demonstrated, their features have been analyzed, their effectiveness in reducing energy losses has been demonstrated.

Electric energy storage units for distributed energy systems

2020 ◽  
Vol 2 (4) ◽  
pp. 219-230
Author(s):  
P. A. Khlyupin
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Efficient ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Electric Machines ◽  
Energy Sources ◽  
Storage Unit ◽  
Electric Energy Storage ◽  
Storage Units

Introduction: there is much concern about power supply to small and remote villages and industrial facilities, such as crude oil and gas fields, in the present-day power industry. Systems using renewable energy sources are the most innovative solutions to this problem. The need for electric energy storage units complicates the use of renewable energy sources. Versatile types of storage units, working on different principles, are in use now. Flywheels, working on the principle of mechanical accumulation of energy, are of particular interest.Methods: both traditional and advanced designs of electric energy accumulation systems are analyzed in the article. Recent advancements in machine building, power engineering and structural materials are contributed into structural elements of an electric energy accumulation system.Results and discussion: basic strengths and weaknesses of electric energy storage units were identified in the course of the analysis. The author substantiated the need for new effective electric energy storage units working on the principle of mechanical accumulation of potential and kinetic energy. The conclusion is that advanced engineering solutions, such as flywheels and energy efficient reversible electric machines, can boost the efficiency of electric power storage systems. The solution underlying the design of an energy efficient storage unit is offered to electric power industry players.Conclusion: the storage unit under development has flywheels and energy efficient reversible electric machines. It improves the energy efficiency of both classical power generation systems and those using renewable energy sources.

The Effective Use of Renewable Energy Sources and Advanced Technology of Environment Systems in Public Buildings

2013 ◽  
Vol 361-363 ◽  
pp. 382-385
Author(s):  
Marek Kušnír ◽  
Danica Košičanová ◽  
František Vranay
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Cooling System ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Heating System ◽  
Photovoltaic System ◽  
Advanced Technology ◽  
Energy Sources ◽  
Total Energy Consumption

Nowadays, choosing of heating source is emphasized. On the market there are different types of heat sources, which need to be properly designed to the required heating output. Finally, it is necessary to take into account the possibilities of fuel burning as well as heat transfer substance. Heating system is dependent on regional weather conditions, where the building is located. All these factors ultimately, with proper design of the heat source, could reduce operating costs in the heating season. Currently in the design of the heating system, there are taken into account the greatest possible energy savings. It is therefore to encourage bigger utilization of renewable energy sources.Currently has the highest proportion of total energy consumption in the buildings, energy for heating. For this reason, the expert and research community seeks to reduce energy consumption at the lowest possible value. For this purpose, people are starting to apply renewable energy sources. These devices using renewable energy sources convert energy from the environment. Most of them are transforming energy from the sun, earth, water and air. This energy is then used directly for heating. In this article we will more closely deal with transforming solar energy into electricity using photovoltaic panels and we will focus on the interaction between the photovoltaic system and heating and cooling system, under certain conditions. Produced electric energy is used for heating system in the school building in Spišská Nová Ves in Slovakia.

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