scholarly journals Optimization of the energy system of the Taimyr coal basin through energy storage

2021 ◽  
Vol 266 ◽  
pp. 04012
Author(s):  
A. Deev ◽  
V. Lebedev
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Power System ◽  
Electric Energy ◽  
Lithium Ion ◽  
Electrical Energy ◽  
Energy System ◽  
Combined Heat And Power ◽  
Hot Water ◽  
Coal Basin

This article examines the influence of energy storage on the possibility of increasing the efficiency of a power plant on the example of the model of the power system of the Taimyr coal basin. The main elements of the power system calculated in this paper included: household consumers (township of Dixon), industrial consumers (coal mining enterprises), sources of thermal and electric energy (coal-fired combined heat and power plant). Storage equipment was selected for the storage of thermal and electrical energy in the power system, such as energy storage systems based on lithium-ion batteries and hot water storage tanks. The changes in the operation modes of the combined heat and power plant during the introduction of battery systems in the power system were evaluated, and the efficiency of the combined heat and power plant was calculated for various modes of energy storage.

scholarly journals Modeling of the combined operation of a solar photovoltaic power plant and a system of electric energy storage

2020 ◽  
Vol 2020 (3) ◽  
pp. 30-36
Author(s):  
I.M. Buratynskyi ◽  
◽  
T.P. Nechaieva ◽  
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Power System ◽  
Power Plants ◽  
Solar Power ◽  
Electric Energy ◽  
Electrical Energy ◽  
Solar Power Plant ◽  
Electric Energy Storage ◽  
Combined Operation

In view of the dependence of power generation at photovoltaic solar power plants on the level of intensity of solar radiation and cloud cover, their operation creates a number of problems in the power system. This article describes the problems of operation of such power plants of non-guaranteed capacity during their parallel operation as a part of the Unified Energy System of Ukraine. One of the measures of stabilizing the operation of power plants of non-guaranteed capacity is the use of systems of electric energy storage. The article describes the conditions of electrical connection, which ensure the possibility of combined operation of a system of electric energy storage and a photovoltaic solar power plant. The article presents the developed mathematical model of the combined operation of a photovoltaic solar power plant (PSPP) and a system of electric energy storage. We consider the daily mode of recharging from a PSPP and discharging batteries into the power system in order to preserve the excess of generated electricity at the PSPP, which earlier was lost due to the restriction on inverters caused by the overload with photovoltaic power. The model enables one to identify the key parameters of batteries – power and capacity, taking into account the physical and technical features of the operation of battery storage as to the conversion efficiency, the number of working cycles and the depth of possible discharge depending on the structure of PSPP equipment and solar radiation intensity. Using the developed model, we determined the values of power, charging and discharging capacities of a lithium-ion system for storing electrical energy, when it works together with a 10 MWAC photovoltaic solar power plant at different overload factors. The article presents some results of technical and economic assessment of the combined operation of a PSPP and a lithium-ion system for storing electrical energy. The results showed an increase in the power and capacity of a storage device with increase in the overload factor of PSPP, which leads to the growth of cost of electrical energy at their combined work. At the same time, the amounts and quality of electricity supplied increase. Keywords: mathematical model, photovoltaic solar power plant, system of electric energy storage, cost of electricity, power system

Hybrid Electrical Storage and Power System for Household Tri-Generation Application

2012 ◽  
Vol 614-615 ◽  
pp. 829-836
Author(s):  
X. P. Chen ◽  
Y. D. Wang ◽  
J. T. Li ◽  
A. P. Roskilly
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Computational Simulation ◽  
Electric Energy ◽  
Electrical Energy ◽  
Super Capacitor ◽  
Electric System ◽  
Electric Energy Storage ◽  
Domestic Power

As a crucial constituent in tri-generation application, electric energy storage and power system plays an important role regarding efficient utilization of electrical energy in tri-generation. This paper presents the results showing that the optimization of electrical energy storage is able to promote the performance of tri-generation. Initial investigation, including laboratory tests and computational simulation using Dymola software, have been carried out. A case study exemplifies how diverse hybrid systems accommodate domestic power demands. The outcomes validate that the hybrid electric system consisting of generator, batteries and super capacitor can satisfy the electricity requirements for the household. it is also found that the hybrid system can supply the peak electricity demands where the integration of super capacitor can alleviate the overcharge of batteries in this application.

scholarly journals Issues of using local energy systems with hydraulic energy storage in the power system of the republic of Uzbekistan

2020 ◽  
Vol 216 ◽  
pp. 01138
Author(s):  
M. M Mukhammadiev ◽  
B. U Urishev ◽  
A Abduaziz uulu ◽  
S. K Gadaev ◽  
S. U Zhankabylov
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Lithium Ion Batteries ◽  
Economic Efficiency ◽  
Lithium Ion ◽  
Energy Systems ◽  
Energy System ◽  
Local Energy ◽  
Energy Parameters ◽  
The Republic

The method of determining the main energy parameters of a local energy system based on renewable sources with hydraulic accumulation of part of the generated energy is considered. The example shows the economic efficiency of hydraulic energy storage in comparison with lithium-ion batteries.

Performance Analysis of a Solid Oxide Fuel Cell-Gasifier Integrated System in Co-Trigenerative Arrangement

2018 ◽  
Vol 140 (9) ◽  
Author(s):  
Petronilla Fragiacomo ◽  
Giuseppe De Lorenzo ◽  
Orlando Corigliano
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Electric Energy ◽  
Energy System ◽  
Hot Water ◽  
Waste Biomass ◽  
Biomass Waste ◽  
Energy Unit ◽  
Cooling Section ◽  
Water Tanks

The use of renewable sources, such as woody biomass waste, for energy purposes helps to reduce the consumption of fossil fuels and therefore the production of associated pollutants and greenhouse gases. Solid oxide fuel cells (SOFCs) are devices that convert the chemical energy of a product gas produced by a gasifier of biomass waste, before being suitably purified, directly into electric energy, with conversion efficiency, which is higher than that of other conventional energy systems. Since they operate at high temperature, they make available also thermal energy, which can be used for co- and tri-generation purposes. This paper aims at studying the arrangement of a complete trigenerative energy system composed of a gasifier of waste biomass; an energy unit represented by a SOFC system; an absorption cooling section for the conversion into cooling energy of the waste heat. In its layout, the SOFC energy unit considers the anode off gas recirculation, a postcombustor to energize the exhaust stream, and a preheater for the fresh gases entering. The integrated plant is completed by means of batteries for electric energy storage and hot water tanks and thermal energy storage. An ad hoc developed numerical modeling is used to choose the working point of the SOFC energy system at which to operate it and to analyze its energy behavior under syngas feeding. Two biomass-derived syngas are analyzed: one from woody biomass and one from urban solid waste gasification. Hence, the entire integrated plant is analyzed for both feeding types. The energy analysis of the integrated SOFC/gasifier is carried out based on a fixed quantity of biomass waste to be processed in an existing gasifier. Then, the design of the SOFC energy section is carried out. The integrated plant is then applied to a case study to satisfy the energy needs of a user of the tertiary sector. Therefore, based on this, the procedure continues with sizing the cooling section for the cooling power delivery in the warm season, the batteries to store the electric energy to be delivered, and the hot water tanks for the thermal energy storage to be delivered as heat when necessary or to feed the absorption cooling plant. The integrated SOFC/Gasifier defined can be considered as a high-efficiency tri-generator capable of accomplishing an energy valorization of high quality waste biomass.

scholarly journals Modeling the use of energy storage systems to transfer excess electricity from a solar power

2021 ◽  
Vol 2021 (1) ◽  
pp. 38-44
Author(s):  
I.M. Buratynskyi ◽  
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Storage System ◽  
Electric Energy ◽  
Electrical Energy ◽  
Energy Storage System ◽  
Solar Photovoltaic ◽  
Photovoltaic Power ◽  
Battery Energy ◽  
The Cost

The peculiarity of the operation of solar photovoltaic power plants is the dependence of the generation power on weather conditions, which leads to the maximum production of electrical energy at noon hours of the day. Due to a decrease in electricity consumption, insufficient unloading capacity of pumped storage power plants in the integrated energy system of Ukraine and the specifics of electricity production at solar photovoltaic power plants, dispatching restrictions on the level of generation power are already taking place. To transfer volumes of electrical energy in the world, electrical energy storage systems are used, which operate based on lithium-ion storage batteries. Such systems have a number of advantages over other battery energy systems, which allows their implementation in almost any power generation facility. With the help of energy storage systems, it is possible to make a profit through the purchase of electric energy during a period of low prices and its release during a period of high prices, allowing consumers to save money on its payment. In this paper, we simulate the use of a battery energy storage system for storing electrical energy to transfer excess electrical energy from a solar photovoltaic power plant. To conduct a study and identify excess capacity of a solar photovoltaic power plant, the daily schedule of electrical load is equalized to the capacity of a separate power plant Because of the study, the optimal time for charging and discharging the battery was determined, from which it can be seen that the need to transfer excess electricity to a solar photovoltaic power plant occurs at lunchtime, and their discharge at the peak is the graph of the electrical load of the power system. The aggregate operation of a solar power plant with a total installed capacity of photovoltaic power at the level of 10 MW (DC) and a battery energy storage system for accumulating electric energy with a capacity of 3.75 MWh was simulated. For the study day, the required capacity of a battery system for accumulating electric energy at the level of 1.58 MW was determined. Using the methodology of the levelized cost of electricity and storage, a technical and economic assessment of the transfer of excess capacity of a solar photovoltaic power plant using a battery system for storing electrical energy was carried out. When calculating the cost of storage, the cost of the transferred electrical energy from the solar power plant was taken into account. From the results of technical and economic calculations, it can be seen that, in terms of the cost of equipment, as of 2020, the cost of supplying excess electrical energy from the battery energy storage system is growing when compared with the supply from a solar photovoltaic power plant. Taking into account some forecast assumptions, the cost of electricity supply from the battery energy storage system was calculated for the mode of transferring excess capacity of a solar photovoltaic power plant for 2025 and 2030 years. Keywords: modeling, power system, load demand curve, solar photovoltaic power plant, electric energy storage system, cost

Analysis of gas turbine combined heat and power system for carbon capture installation of coal-fired power plant

Energy ◽  
2012 ◽  
Vol 45 (1) ◽  
pp. 125-133 ◽  
Author(s):  
Tadeusz Chmielniak ◽  
Sebastian Lepszy ◽  
Katarzyna Wójcik
Keyword(s):  
Power Plant ◽  
Power System ◽  
Gas Turbine ◽  
Carbon Capture ◽  
Combined Heat And Power

scholarly journals LCA and Exergo-Environmental Evaluation of a Combined Heat and Power Double-Flash Geothermal Power Plant

2021 ◽  
Vol 13 (4) ◽  
pp. 1935
Author(s):  
Vitantonio Colucci ◽  
Giampaolo Manfrida ◽  
Barbara Mendecka ◽  
Lorenzo Talluri ◽  
Claudio Zuffi
Keyword(s):  
Life Cycle ◽  
Power Plant ◽  
Environmental Analysis ◽  
Combined Heat And Power ◽  
Hot Water ◽  
Environmental Cost ◽  
Published Data ◽  
Geothermal Power Plant ◽  
Geothermal Power ◽  
Double Flash

This study deals with the life cycle assessment (LCA) and an exergo-environmental analysis (EEvA) of the geothermal Power Plant of Hellisheiði (Iceland), a combined heat and power double flash plant, with an installed power of 303.3 MW for electricity and 133 MW for hot water. LCA approach is used to evaluate and analyse the environmental performance at the power plant global level. A more in-depth study is developed, at the power plant components level, through EEvA. The analysis employs existing published data with a realignment of the inventory to the latest data resource and compares the life cycle impacts of three methods (ILCD 2011 Midpoint, ReCiPe 2016 Midpoint-Endpoint, and CML-IA Baseline) for two different scenarios. In scenario 1, any emission abatement system is considered. In scenario 2, re-injection of CO2 and H2S is accounted for. The analysis identifies some major hot spots for the environmental power plant impacts, like acidification, particulate matter formation, ecosystem, and human toxicity, mainly caused by some specific sources. Finally, an exergo-environmental analysis allows indicating the wells as significant contributors of the environmental impact rate associated with the construction, Operation & Maintenance, and end of life stages and the HP condenser as the component with the highest environmental cost rate.

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