Journal articles: 'Storage power plant'

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Mishin, N. N. "Leningrad pumped-storage power plant." Power Technology and Engineering 46, no. 5 (January 2013): 377–79. http://dx.doi.org/10.1007/s10749-013-0362-0.

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Grán, Jaroslav. "Pumped storage power plant Čierny Váh." Tunnelling and Underground Space Technology 1, no. 1 (January 1986): 29–34. http://dx.doi.org/10.1016/0886-7798(86)90124-0.

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Tan, Zhongfu, Qingkun Tan, and Yuwei Wang. "Bidding Strategy of Virtual Power Plant with Energy Storage Power Station and Photovoltaic and Wind Power." Journal of Engineering 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/6139086.

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For the virtual power plants containing energy storage power stations and photovoltaic and wind power, the output of PV and wind power is uncertain and virtual power plants must consider this uncertainty when they participate in the auction in the electricity market. In this context, this paper studies the bidding strategy of the virtual power plant with photovoltaic and wind power. Assuming that the upper and lower limits of the combined output of photovoltaic and wind power are stochastically variable, the fluctuation range of the day-ahead energy market and capacity price is stochastically variable. If the capacity of the storage station is large enough to stabilize the fluctuation of the output of the wind and photovoltaic power, virtual power plants can participate in the electricity market bidding. This paper constructs a robust optimization model of virtual power plant bidding strategy in the electricity market, which considers the cost of charge and discharge of energy storage power station and transmission congestion. The model proposed in this paper is solved by CPLEX; the example results show that the model is reasonable and the method is valid.

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Herrmann, Ulf, and David W. Kearney. "Survey of Thermal Energy Storage for Parabolic Trough Power Plants." Journal of Solar Energy Engineering 124, no. 2 (April 24, 2002): 145–52. http://dx.doi.org/10.1115/1.1467601.

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A literature review was carried out to critically evaluate the state of the art of thermal energy storage applied to parabolic trough power plants. This survey briefly describes the work done before 1990 followed by a more detailed discussion of later efforts. The most advanced system is a 2-tank-storage system where the heat transfer fluid (HTF) also serves as storage medium. This concept was successfully demonstrated in a commercial trough plant (13.8MWe SEGS I plant; 120MWht storage capacity) and a demonstration tower plant (10MWe Solar Two; 105MWht storage capacity). However, the HTF used in state-of-the-art parabolic trough power plants 30-80MWe is expensive, dramatically increasing the cost of larger HTF storage systems. Other promising storage concepts are under development, such as concrete storage, phase change material storage, and chemical storage. These concepts promise a considerable cost reduction compared to the direct 2-tank system, but some additional R&D is required before those systems can be used in commercial solar power plants. An interesting and likely cost-effective near-term option for thermal energy storage for parabolic trough power plants is the use of an indirect 2-tank-storage, where another (less expensive) liquid medium such as molten salt is utilized rather than the HTF itself.

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TANAKA, KUNINORI. "Pumped-Storage Power Plant Using Sea Water." Journal of the Institute of Electrical Engineers of Japan 124, no. 9 (2004): 583–86. http://dx.doi.org/10.1541/ieejjournal.124.583.

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Delfanti, Maurizio, Davide Falabretti, and Marco Merlo. "Energy storage for PV power plant dispatching." Renewable Energy 80 (August 2015): 61–72. http://dx.doi.org/10.1016/j.renene.2015.01.047.

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MUKHAMMADIEV, Muradulla Mukhammadievich, Boborakhim Urishevich URISHEV, Kurbon Salikhdzhanovich DZHURAEV, and Jamol Makhmud ugli MAHMUDOV. "WATER-STORAGE POWER STATION PLANTS OF LOW POWER." Urban construction and architecture 6, no. 1 (March 15, 2016): 21–26. http://dx.doi.org/10.17673/vestnik.2016.01.4.

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The technique of determining the basic parameters of the new water-lifting devices used in the composition of the pumped storage power plant of small capacity. Show the results of calculations by this technique for a pumped storage power plant of 10 kW. The results of calculations of the jet device and air-lift installation designed to work in PSP, showed the suitability of the proposed methodology that can be used in the design of hydropower facilities operating with a water-lifting devices using the energy of interaction between water and compressed air.

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Zhang, Ting, Shuaishuai Cao, Lingying Pan, and Chenyu Zhou. "A Policy Effect Analysis of China’s Energy Storage Development Based on a Multi-Agent Evolutionary Game Model." Energies 13, no. 23 (November 29, 2020): 6293. http://dx.doi.org/10.3390/en13236293.

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Energy storage technology plays a significant role in the pursuit of the high-quality development of the electricity market. Many regions in China have issued policies and regulations of different intensities for promoting the popularization of the energy storage industry. Based on a variety of initial conditions of different regions, this paper explores the evolutionary process of electricity market players considering energy storage technology. The trilateral evolutionary game model is adopted to analyze the strategies of the power plant, the power grid, and the government. After assigning the model according to an actual situation, each equilibrium point corresponds to a real electricity market situation. The results indicate the following: (1) In the process of stabilizing, the role of “Advanced Imitators” leading the strategy of building energy storage changes between the power plant and the power grid. (2) In Eastern, Middle, and Southern China, the power plants and power grids on a greater-than-medium scale will choose to build energy storage without governmental regulations, due to the abundant net profit. (3) In the northeast of China, power plants with a medium-or-lower scale will choose not to build energy storage because of the relatively low on-grid price, and small power grids can make enough profits by operating energy storage facilities. (4) In Northern China, the large power plants and the medium power grids will choose to build energy storage due to the high electricity sale price and the resulting high profit. (5) In Western China, the small power plants and power grids cannot afford to build energy storage due to the low electricity price. The results lead to valuable policy suggestions for the local governments of China in promoting energy storage in the future. To meet the goal of energy storage popularization, regional electricity market plans need relevant policies based on its existing conditions, offering suitable external conditions for adding energy storage.

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ÇİÇEK, Önder, and Mustafa ÖZDEMİR. "Örnek Bir Hidroelektrik Santrali İçin Pompaj Depolamalı Hidroelektrik Santrali Tasarımı." Gazi Journal of Engineering Sciences 7, no. 1 (April 30, 2021): 26–35. http://dx.doi.org/10.30855/gmbd.2021.01.04.

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Nikolaev, Y. E., V. N. Osipov, and V. Y. Ignatov. "Calculation methodology of the energy indicators of an self-contained energy complex including gas turbine plants, wind-driven power plant and electric storage cell." Power engineering: research, equipment, technology 22, no. 3 (September 8, 2020): 36–43. http://dx.doi.org/10.30724/1998-9903-2020-22-3-36-43.

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To supply small cities with electric and thermal energy it is proposed to create selfcontained energy complex based on gas turbine plants (GTP), wind generators and electric storage cell. A scheme for the joint operation of these plants is offered, a methodology for calculating the quantitative characteristics of a wind power plant, gas turbines and electric storage cell is developed. Electric storage cell provide coverage the peak portion of the daily electrical load curve. The heat load is ensured by the operation of the waste-heat boiler and the peak boiler. Using the example of a power complex with an electric load of 5 MW and a heat load of 17.5 MW, the generation of electric energy by wind driven power plant and gas turbine plants, the supply of electric energy from electric storage cell, the heat loads of the waste-heat boiler and peak boiler by months of the year are calculated. When the power share of the wind power plant is 0.2, the electric storage cell provide for an annual period from 5.2 to 10.7 % of the daily demand of the electric load schedule. The electric power of the gas turbine plant in winter is reduced to 70 % of the maximum load of the consumer, in summer - up to 55 %. An increase in the relative share of the power of a WDPP reduces the electric capacity of a gas turbine plants, its cost, while the cost of electric storage cell increases.

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Tomczewski, Andrzej, Leszek Kasprzyk, and Zbigniew Nadolny. "Reduction of Power Production Costs in a Wind Power Plant–Flywheel Energy Storage System Arrangement." Energies 12, no. 10 (May 21, 2019): 1942. http://dx.doi.org/10.3390/en12101942.

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The paper presents issues of optimisation of a wind power plant–energy storage system (WPP-ESS) arrangement operating in a specific geographical location. An algorithm was developed to minimise the unit discounted cost of electricity generation in a system containing a wind power plant and flywheel energy storage. In order to carry out the task, population heuristics of the genetic algorithm were used with modifications introduced by the author (taking into account the coefficient of variation of the generation in the quasi-static term of the penalty and the selection method). The set of inequality restrictions related to the technical parameters of turbines and energy storage and the parameters of energy storage management has been taken into account with the application of the Powell–Skolnick penalty function (Michalewicz modification). The results of sample optimisation calculations for two wind power plants of 2 MW were presented. The effects achieved in the process of optimisation were described—especially the influence of the parameters of the energy storage management system on the unit cost of electricity generation. The use of a system with higher unit costs of energy generation compared to independently operating wind turbines was justified in the context of improving the conditions of compatibility with the power system—the strategy belongs to a power firming group.

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Borissova, Ana, and Dimityr Popov. "An option for integration of Carnot Battery into a small Nuclear Power Plant." E3S Web of Conferences 207 (2020): 01027. http://dx.doi.org/10.1051/e3sconf/202020701027.

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This article proposes a combination of nuclear power plant and grid-scale energy storage, classified as Carnot battery. The electric heater heats molten salts when excess electricity is available in the grid. The steam that is produced in a small modular nuclear reactor is heated with hot molten salts in the external super-heater. For continuous superheating to be ensured, the plant is equipped with molten salt thermal energy storage. The combined plant and reference NPP are modelled and simulated at steady-state conditions. Due to the higher turbine inlet temperature, the efficiency of the combined generation-storage nuclear plant is substantially improved. The proposed concept makes the co-location of NPP and Carnot Battery more attractive than the separate plants. The integrated thermal storage acts as secondary electricity storage. As such, it surpasses compressed air storage and is competitive with the pumped hydro storage, in the absence of their geographical and environmental constraints.

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Sah, Neeraj Kumar, Madhab Uprety, Sangharsha Bhandari, Prativa Kharel, Saurav Suman, and Ramesh Kumar Maskey. "Prospects of Storage and Pumped-Storage Hydropower for Enhancing Integrated Nepal Power Systems." Hydro Nepal: Journal of Water, Energy and Environment 15 (October 22, 2014): 37–41. http://dx.doi.org/10.3126/hn.v15i0.11290.

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An Integrated Power System (IPS) should have electrical energy generating plants for base load (e.g., nuclear and thermal plants) and peak load (e.g., hydropower plants) so that they can work in coordination in such a way that the demand is met in time. In Nepal, the Integrated Nepal Power System (INPS) is a hydro-dominated system where the base and intermediate power demands are covered primarily by run-of-river hydropower plants and the peak demand by seasonal storage and several diesel power plants of lower capacity. The INPS should have sufficient natural storage and forced storage power plants to improve the system’s reliability. On top of that, daily peak electrical demand could also be adequately covered by demand-side management, using a pumped-storage hydropower plant that can employ a system’s surplus energy during low demand period for pumping. To rectify this extreme imbalance of installed capacity in Nepal, this paper explores the prospect of storage and pumped-storage power plants for enhancing INPS. A case study of Rupa-Begnas pumped-storage hydropower is highlighted for these purposes.DOI: http://dx.doi.org/10.3126/hn.v15i0.11290HYDRO Nepal JournalJournal of Water, Energy and EnvironmentVolume: 15, 2014, JulyPage: 37-41

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Buratynskyi, I. M. "Modeling the use of energy storage systems to transfer excess electricity from a solar power." Problems of General Energy 2021, no. 1 (March 24, 2021): 38–44. http://dx.doi.org/10.15407/pge2021.01.038.

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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

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Bell, R. D., N. W. Rees, and C. X. Lu. "Transient Analysis of Power Plant Deaerators." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 206, no. 3 (August 1992): 157–64. http://dx.doi.org/10.1243/pime_proc_1992_206_326_02.

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A mathematical model suitable for predicting the transient behaviour of deaerator plant is presented. The model is based on energy and mass balance equations applied to the deaerator, storage tank and feed pump suction pipe. The model parameters are based entirely on the physical characteristics of the plant, and hence the model can be easily adapted to plants of different size. A comparison with data collected from a deaerator plant operating on a 500 MW unit indicates that the model gives good transient responses and can be used to predict accurately the onset of cavitation in the feed pump.

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Lombardi, P., T. Sokolnikova, Z. Styczynski, and N. Voropai. "Virtual power plant management considering energy storage systems." IFAC Proceedings Volumes 45, no. 21 (2012): 132–37. http://dx.doi.org/10.3182/20120902-4-fr-2032.00025.

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Inagaki, Morihito, Mitsuhiro Ishiguro, Naoyuki Haneda, Akihiro Kitazawa, Yasuo Takagi, Kazunori Iwabuchi, Kaneo Sugishita, Kenji Mitsumoto, Tetsuya Noguchi, and Kazunori Toda. "Advanced Governor Controller for Pumped-Storage Power Plant." IEEJ Transactions on Power and Energy 122, no. 6 (2002): 761–68. http://dx.doi.org/10.1541/ieejpes1990.122.6_761.

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Srinivas, T., and B. V. Reddy. "Hybrid solar–biomass power plant without energy storage." Case Studies in Thermal Engineering 2 (March 2014): 75–81. http://dx.doi.org/10.1016/j.csite.2013.12.004.

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Liu, Wen Yi, Gang Xu, and Yong Ping Yang. "Performance Analysis of CAES Power Plant Energy Storage Sub-System for Wind Power." Applied Mechanics and Materials 130-134 (October 2011): 4002–5. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.4002.

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Compressed Air Energy Storage (CAES) is besides pumped hydropower, the other solution for large energy storage capacity. It can balance fluctuations in supply and demand of electricity. It can meet the challenge of load fluctuations of wind power especially. In CAES technology, air is compressed with a motor/generator using low cost, off-peak or discarded electricity from wind power and stored underground in caverns or porous media. This is called energy storage subsystem. The energy storage subsystem of CAES include: compressing air process and air lose heat process. The equipments of it are organized with different schemes in this paper. Optimization and performance simulation of it are made. The performance data are contrasted.

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Tamme, Rainer, Doerte Laing, and Wolf-Dieter Steinmann. "Advanced Thermal Energy Storage Technology for Parabolic Trough." Journal of Solar Energy Engineering 126, no. 2 (May 1, 2004): 794–800. http://dx.doi.org/10.1115/1.1687404.

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The availability of storage capacity plays an important role for the economic success of solar thermal power plants. For today’s parabolic trough power plants, sensible heat storage systems with operation temperatures between 300°C and 390°C can be used. A solid media sensible heat storage system is developed and will be tested in a parabolic trough test loop at PSA, Spain. A simulation tool for the analysis of the transient performance of solid media sensible heat storage systems has been implemented. The computed results show the influence of various parameters describing the storage system. While the effects of the storage material properties are limited, the selected geometry of the storage system is important. The evaluation of a storage system demands the analysis of the complete power plant and not only of the storage unit. Then the capacity of the system is defined by the electric work produced by the power plant during a discharge process of the storage unit. The choice of the operation strategy for the storage system proves to be essential for the economic optimization.

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Kiene, S., and O. Linkevics. "Simplified Model for Evaluation of Hydropower Plant Conversion into Pumped Storage Hydropower Plant." Latvian Journal of Physics and Technical Sciences 58, no. 3 (June 1, 2021): 108–20. http://dx.doi.org/10.2478/lpts-2021-0020.

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Abstract Increasing capacity of intermittent generation brings new challenges to balance demand and supply in power systems. With retirement of conventional fossil generation, the role of energy storage is increasing. One of the most competitive storage technologies is pumped storage hydropower plant (PSHP). Usually, such PSHPs are constructed as green field solutions, but in some cases conversion of a hydropower plant into a pump storage hydropower plant by building a pump station is possible. To evaluate the feasibility of such modernisation it is necessary to estimate the benefits of PSHP operation. The simplified model was developed for simulation of charging and discharging cycles of PSHP in Latvian power system and trading electricity in Nord Pool power exchange. The nature of this task is stochastic as the price volatility has a trend to increase with expansion of wind and solar power plant capacity. Results of PSHP operation simulation were then used in the economic model to evaluate the feasibility of the proposed conversion.

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Krüger, Michael, Selman Muslubas, Thomas Loeper, Freerk Klasing, Philipp Knödler, and Christian Mielke. "Potentials of Thermal Energy Storage Integrated into Steam Power Plants." Energies 13, no. 9 (May 3, 2020): 2226. http://dx.doi.org/10.3390/en13092226.

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For conventional power plants, the integration of thermal energy storage opens up a promising opportunity to meet future technical requirements in terms of flexibility while at the same time improving cost-effectiveness. In the FLEXI- TES joint project, the flexibilization of coal-fired steam power plants by integrating thermal energy storage (TES) into the power plant process is being investigated. In the concept phase at the beginning of the research project, various storage integration concepts were developed and evaluated. Finally, three lead concepts with different storage technologies and integration points in the power plant were identified. By means of stationary system simulations, the changes of net power output during charging and discharging as well as different storage efficiencies were calculated. Depending on the concept and the operating strategy, a reduction of the minimum load by up to 4% of the net capacity during charging and a load increase by up to 5% of the net capacity during discharging are possible. Storage efficiencies of up to 80% can be achieved.

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Song, Seok-Ho, Jin-Young Heo, and Jeong-Ik Lee. "Design Considerations for the Liquid Air Energy Storage System Integrated to Nuclear Steam Cycle." Applied Sciences 11, no. 18 (September 13, 2021): 8484. http://dx.doi.org/10.3390/app11188484.

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A nuclear power plant is one of the power sources that shares a large portion of base-load. However, as the proportion of renewable energy increases, nuclear power plants will be required to generate power more flexibly due to the intermittency of the renewable energy sources. This paper reviews a layout thermally integrating the liquid air energy storage system with a nuclear power plant. To evaluate the performance realistically while optimizing the layout, operating nuclear power plant conditions are used. After revisiting the analysis, the optimized performance of the proposed system is predicted to achieve 59.96% of the round-trip efficiency. However, it is further shown that external environmental conditions could deteriorate the performance. For the design of liquid air energy storage-nuclear power plant integrated systems, both the steam properties of the linked plants and external factors should be considered.

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Sutrisno, Zefania Praventia, Attaya Artemis Meiritza, and Anggit Raksajati. "Understanding the Potential of Bio-Carbon Capture and Storage from Biomass Power Plant in Indonesia." Indonesian Journal of Energy 4, no. 1 (February 26, 2021): 36–56. http://dx.doi.org/10.33116/ije.v4i1.99.

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Indonesia is currently experiencing a significant increase in population, industrialization and energy demand. As the energy demand increases, so does the production of climate-altering CO2 emission. Biomass power plants have emerged as a low carbon power generation alternative, utilizing agricultural and industrial waste. Biomass power plants have the potential of being a carbon-negative power generation technology in the near future by integrating carbon and capture storage (bio-CCS). The objective of this paper is to analyze and map potential CO2 emission in the processes of biomass power plants from gasification and firing or co-firing technology, then recommend suitable carbon capture technology based on the biomass power plant characteristics in Indonesia. The CO2 emission to be captured in the gasification process is 11-15% of the producer gas, while in co-firing it is 7-24% of the flue gas stream. Using biomass instead of coal in power plants reduces the electric efficiency and increases the plant’s in-house emission, but when analyzed in a wider boundary system it is apparent that the net GWP and CO2 emission of biomass power plants are way smaller than coal power plant, moreover when equipped with carbon capture unit. Biomass power plant that uses firing technology can reduce CO2 emission by 148% compared to typical coal power plant. Installing carbon capture unit in biomass firing power plants can further reduce the specific CO2 emission by 262%. If carbon capture technology is implemented to all existing biomass power plants in Indonesia, it could reduce the greenhouse gas emission up to 2.2 million tonnes CO2 equivalent annually. It is found that there are 3 significant designs for gasification technology: NREL design, Rhodes & Keith design and IGBCC+DeCO2 design. The first two designs are not suitable to be retrofitted into existing biomass power plants in Indonesia since they are based on a specific BCL/FERCO gasifier. While IGBCC+DeCO2 design still needs further study regarding its feasibility. While for firing, the most promising technology to be applied in the near future is solvent-based absorption because it is already on commercial scale for coal-based power plants and can be implemented for other source, e.g. biomass power plant. Bio-CCS in existing biomass power plant with firing technology is likely to be implemented in the near future compared to the gasification, because it applies the post combustion capture as an “end-of-pipe” technology which is generally seen as a more viable option to be retrofitted to existing power plants, resulting in potentially less expensive transition.

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Wei, Hei, and Rasyidah Mohamed Idris. "Optimal Operation Model for Virtual Power Plant in Datong Area." Applied Mechanics and Materials 785 (August 2015): 627–31. http://dx.doi.org/10.4028/www.scientific.net/amm.785.627.

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Datong area has abundant wind energy. Due to problem in large scale of wind power grid connection, this paper introduces virtual power plant concept. As for beginning, power source characteristics of the wind farm, pumped storage power station and the thermal power plant are taken for analysis. Three types of different power plants are chosen to represent the virtual power plant modeling as well as adopting the NSGA2 optimization. As a conclusion, this case study proved that virtual power plant can increase the benefits of each power plant and the wind power plant output power curve become smoother.

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Popov, I. P. "Peak Load Balancing for Engineering Vehicles." Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering, no. 3 (132) (June 2020): 85–93. http://dx.doi.org/10.18698/0236-3941-2020-3-85-93.

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The paper considers the possibility of equipping engineering vehicles with inertial capacitance energy storage units, which should allow the power plant loads to be evened out, in turn leading to reducing the output power, mass and dimensions of the plant. In a range of engineering vehicles, such as excavators, bulldozers, diesel shunter locomotives and so on, loads are of a substantially irregular character. Peak loads are what determines the output power of power plants. It is evident that the power plant is not fully loaded most of the time. We propose a technological solution for balancing peak loads in engineering vehicles. Since operation modes of engineering vehicles change relatively frequently, it is efficient and advisable to equip them with energy storage units. The storage unit will not only level the power plant load, but also allow the energy to be recuperated during deceleration, which should improve the energy efficiency of the machine. We present the theoretical background required to develop an inertial capacitance energy storage unit, which is implemented as a direct current machine featuring a super flywheel. Employing flywheels in engineering vehicles is feasible due to their total mass requirements being flexible. Another advantage of certain engineering vehicles is their electro-mechanical transmission, the presence of which should minimise the development effort concerning the inertial capacitance energy storage unit discussed in the paper engineering vehicle, energy storage unit, super flywheel, power plant, energy efficiency

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Buratynskyi, I. M., and T. P. Nechaieva. "Modeling of the combined operation of a solar photovoltaic power plant and a system of electric energy storage." Problems of General Energy 2020, no. 3 (September 24, 2020): 30–36. http://dx.doi.org/10.15407/pge2020.03.030.

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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

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Gubański, Adam, Artur Sobkowiak, Michał Jasiński, Dominika Kaczorowska, Przemysław Janik, Paweł Kostyła, Zbigniew Leonowicz, Jacek Rezmer, Tomasz Sikorski, and Vishnu Suresh. "Hybrid Power Plant with Storage System: University Research Station." Periodica Polytechnica Electrical Engineering and Computer Science 64, no. 1 (October 11, 2019): 47–52. http://dx.doi.org/10.3311/ppee.14587.

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The article presents a brief overview of renewable energy sources, microgrids and energy storage problems. The construction and utilisation of university research station to study the operation of a hybrid power plant with an energy storage unit has been described. The tested hybrid power plant consists of a photovoltaic panel and a wind turbine. There are two possible areas of research, one is when the microgrid is connected to the main grid and second when it functions independently as a stand-alone setup. In addition, the model allows to study the characteristics of photovoltaic cells, examine the dependence of generated power on the time, season and angle of the solar panel. In this article, the current-voltage characteristics and influence of solar azimuth angle on cell power, dependence of wind on power generated by the wind turbine, and study of off-grid work of power plant are presented.

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Wickramarathna, M. T. A. P. "Economic Evaluation of Pumped Storage Power Plant Complexes and Comparison with other Candidate Pumped Storage Power Plants Proposed for Sri Lanka." SLEMA Journal 18, no. 2 (September 26, 2015): 11. http://dx.doi.org/10.4038/slemaj.v18i2.16.

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Deev, A., and V. Lebedev. "Optimization of the energy system of the Taimyr coal basin through energy storage." E3S Web of Conferences 266 (2021): 04012. http://dx.doi.org/10.1051/e3sconf/202126604012.

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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.

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Gasa, Gemma, Anton Lopez-Roman, Cristina Prieto, and Luisa F. Cabeza. "Life Cycle Assessment (LCA) of a Concentrating Solar Power (CSP) Plant in Tower Configuration with and without Thermal Energy Storage (TES)." Sustainability 13, no. 7 (March 25, 2021): 3672. http://dx.doi.org/10.3390/su13073672.

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Despite the big deployment of concentrating solar power (CSP) plants, their environmental evaluation is still a pending issue. In this paper, a detailed life cycle assessment (LCA) of a CSP tower plant with molten salts storage in a baseload configuration is carried out and compared with a reference CSP plant without storage. Results show that the plant with storage has a lower environmental impact due to the lower operational impact. The dependence on grid electricity in a CSP tower plant without storage increases its operation stage impact. The impact of the manufacturing and disposal stage is similar in both plants. When analyzed in detail, the solar field system and the thermal energy storage (TES) and heat transfer fluid (HTF) systems are the ones with higher impact. Within the storage system, the molten salts are those with higher impact. Therefore, in this study the impact of the origin of the salts is evaluated, showing that when the salts come from mines their impact is lower than when they are synthetized. Results show that storage is a key element for CSP plants not only to ensure dispatchability but also to reduce their environmental impact.

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32

de Souza, Angelo R. R., Alexandre R. Aoki, Antonio R. Donadon, Germano Lambert-Torres, Luiz Eduardo Borges da Silva, and Joao Carlos Camargo. "Virtual Power Plant Management considering Energy Storage Systems and Multiple Power Sources." IFAC Proceedings Volumes 45, no. 21 (2012): 138–43. http://dx.doi.org/10.3182/20120902-4-fr-2032.00026.

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Ahmed, Nayeemuddin, Paul Gerdun, and Harald Weber. "Active Power Control based on Hydrogen Availability in a Storage Power Plant." IFAC-PapersOnLine 53, no. 2 (2020): 12708–13. http://dx.doi.org/10.1016/j.ifacol.2020.12.1865.

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Bykadorov, A. A., and T. V. Busygina. "Concrete work at the Zagorsk water-storage power plant." Hydrotechnical Construction 26, no. 8 (August 1992): 484–91. http://dx.doi.org/10.1007/bf01544962.

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35

Hiratsuka, Akitaka, Takashi Arai, and Tsukasa Yoshimura. "Seawater pumped-storage power plant in Okinawa island, Japan." Engineering Geology 35, no. 3-4 (October 1993): 237–46. http://dx.doi.org/10.1016/0013-7952(93)90012-2.

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36

Wenyu, Zhang, Liu Hongyong, Xu Xiaochuan, Li Ming, Ren Weixi, Ma Buyun, Ren jie, and Song Zhenyu. "Construction of digital operation and maintenance system for new energy power generation enterprises." E3S Web of Conferences 236 (2021): 02017. http://dx.doi.org/10.1051/e3sconf/202123602017.

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In view of the current increasing new energy installed capacity and the frustration in outputting clean electricity due to limited channel capacity, the new energy intelligence operation system based on big data platform technology, joint power monitoring technology and large-scale energy storage power station integrated with control technology is adopted through unified modeling and communication protocols, so as to solve the problems in information interaction and unified controlling for manufacturers of multiple wind turbine, PV, storage equipment ,and varieties of equipment types.So, by structuring the power-grid friendly wind power plant, photovoltaic power plant and the energy storage power plant, and taking the "five ascension" measures can greatly reduce the workload of the staff, improving the working efficiency and the economic benefits of the enterprise greatly, meanwhile it also provide new methods, new measures and new ideas for other new energy power plants, to realize the improving of the comprehensive benefits and social value.

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Bokelman, Brady, Efstathios E. Michaelides, and Dimitrios N. Michaelides. "A Geothermal-Solar Hybrid Power Plant with Thermal Energy Storage." Energies 13, no. 5 (February 25, 2020): 1018. http://dx.doi.org/10.3390/en13051018.

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The concept of a geothermal-solar power plant is proposed that provides dispatchable power to the local electricity grid. The power plant generates significantly more power in the late afternoon and early evening hours of the summer, when air-conditioning use is high and peak power is demanded. The unit operates in two modes: a) as a binary geothermal power plant utilizing a subcritical Organic Rankine Cycle; and b) as a hybrid geothermal-solar power plant utilizing a supercritical cycle with solar-supplied superheat. Thermal storage allows for continuous power generation in the early evening hours. The switch to the second mode and the addition of solar energy into the cycle increases the electric power generated by a large factor—2 to 9 times—during peak power demand at a higher efficiency (16.8%). The constant supply of geothermal brine and heat storage in molten salts enables this power plant to produce dispatchable power in its two modes of operation with an exergetic efficiency higher than 30%.

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Chang, Ya Chin, Sung Ling Chen, Rung Fang Chang, and Chan Nan Lu. "Optimal Virtual Power Plant Dispatching Approach." Applied Mechanics and Materials 590 (June 2014): 511–15. http://dx.doi.org/10.4028/www.scientific.net/amm.590.511.

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As the integrator of energy resources (DERs), a virtual power plant (VPP) would be able to control the amount of the power access to the distribution transformers such that energy efficiency can be improved. Battery energy storage system (BESS) and demand response (DR) as DERs can entrust the VPP with certain controllability to regulate the power supply of the distribution system. This paper aims to maximize the benefit of the supplied powers over the 24 hours under VPP operation. Combining an iterative dynamic programming optimal BESS schedule approach and a PSO-based DR scheme optimization approach, an optimal VPP operational method is proposed to minimize the total electricity cost with respect to the power supply limit of the distribution transformers and the system security constraints, especially, within the peak load hours. With the TOU rate given each hour, test results had confirmed the validity of the proposed method with the obviously decreased power supply in each peak-load hours and the largely reduced electricity cost accordingly.

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Urishev, Bоboraim, Rumiya Beytullayeva, Аsror Umirov, and Оybek Almardonov. "Hydraulic energy storage of wind power plants." E3S Web of Conferences 264 (2021): 04053. http://dx.doi.org/10.1051/e3sconf/202126404053.

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The article discusses information on the need to accumulate energy from renewable sources to improve their efficiency, as well as some examples of the integration of systems for hydraulic energy storage and renewable sources, which ensure an increase in the reliability and volume of energy generation. The method for determining the parameters of a wind power plant's hydraulic energy storage system, which is based on the balance of the daily load produced and spent on energy storage, is presented. With changing daily loads, this technique makes it possible to determine the main parameters of the complex, including the volume of accumulated water, the coefficient of energy use of the wind power station. A functional diagram of the programmed control of the pumped storage and wind power plant parameters for the optimal use of the wind potential in hydraulic energy storage is presented. Based on the results of calculations using the proposed method, the main parameters of the system based on pumped storage and wind power plant with a capacity of 100 MW were determined, the efficiency of hydraulic energy storage was determined in comparison with lithium-ion batteries.

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Guo, Hong Jing, Jian Lan Li, and Shu Hong Huang. "Heat Storage Performance Analysis of Solar Chimney Power Plant System." Applied Mechanics and Materials 472 (January 2014): 276–85. http://dx.doi.org/10.4028/www.scientific.net/amm.472.276.

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Solar chimney power plant which can realize continuous power generation is a potential power generation technology. Based on the heat transfer theory and hydrodynamics theory, a comprehensive heat transfer and flow model of solar chimney power plant was proposed, and the characteristics of unsteady temperature field and flow field of the system were analyzed. With Manzanares solar chimney power plant as the geometric prototype, the performance of plant generation output and generation stability were studied in condition of different thickness of heat storage layer, different specific heat capacity and thermal conductivity of heat storage medium. The numerical stimulation results showed that above three factors significantly affected the power generation output and generation stability. Thus, the optimization of the three factors was achieved in this paper, which provides the basis for the solar chimney heat storage system design.

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Menéndez, Javier, Falko Schmidt, and Jorge Loredo. "Comparing Subsurface Energy Storage Systems: Underground Pumped Storage Hydropower, Compressed Air Energy Storage and Suspended Weight Gravity Energy Storage." E3S Web of Conferences 162 (2020): 01001. http://dx.doi.org/10.1051/e3sconf/202016201001.

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In the current energy context, intermittent and non-dispatchable renewable energy sources, such as wind and solar photovoltaic (generation does not necessarily correspond to demand), require flexible solutions to store energy. Energy storage systems (ESS) are able to balance the intermittent and volatile generation outputs of variable renewable energies (VRE). ESS provide ancillary services such as: frequency, primary and voltage control to the power grid. In order to fulfil the power system control, ESS can switch within seconds for different operation modes. Many times, ESS imply environment impacts on landscape and society. To solve this problem, disused underground spaces, such as closed mines, can be used as underground reservoir for energy storage plants. In this paper, a comparative analysis between underground pumped storage hydropower (UPSH), compressed air energy storage (CAES) and suspended weight gravity energy storage (SWGES) with suspended weights in abandoned mine shafts is carried out. Pumped storage hydropower (PSH) is the most mature concept and account for 99% of bulk storage capacity worldwide. The results obtained show that in UPSH and CAES plants, the amount of stored energy depends mainly on the underground reservoir capacity, while in SWGES plants depends on the depth of the mine shafts and the mass. The energy stored in a SWGES plant (3.81 MWh cycle-1 with 600 m of usable depth assuming 3,000 tonne suspended weight) is much lower than UPSH and CAES plants.

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Conlon, William M., and Milton J. Venetos. "Adding Energy Storage to the Combined Cycle." Mechanical Engineering 143, no. 1 (January 1, 2021): 64–65. http://dx.doi.org/10.1115/1.2021-jan10.

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Abstract The efficient natural gas Combined Cycle Power Plant (CCPP) has driven a substantial reduction in Greenhouse Gas (GHG) emissions, while gas turbine peaking plants also provide backup for variable renewable resources. As more wind and solar generation is added to grids around the world, there is a need for more flexible CCPPs with faster startup and ramping capability, storage of increasingly over-abundant renewable energy, and lower GHG emissions from dispatchable power plants. Novel integration of energy storage with the CCPP can meet these needs at lower cost than alternatives like batteries.

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R. P., Praveen. "Performance Analysis and Optimization of Central Receiver Solar Thermal Power Plants for Utility Scale Power Generation." Sustainability 12, no. 1 (December 23, 2019): 127. http://dx.doi.org/10.3390/su12010127.

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The paper puts forth the design, performance analysis, and optimization of a 100 MWe central receiver solar thermal power plant with thermal energy storage capability, which can be utilized effectively to meet the renewable energy targets of the Kingdom of Saudi Arabia (KSA). In this paper, three representative sites in KSA are selected for analysis as these sites experience an annual average direct normal irradiance (DNI) of more than 5.5 kWh/m2/day. The optimization approach presented in this work aims to arrive at the best possible design parameters that suit a particular location in accordance with its DNI profile. From the analysis, an annual energy of 559.61 GWh can be generated in Yanbu with eight hours of thermal energy storage, 18.19% plant efficiency, and a capacity factor of 61.1%. The central receiver plant in Abha would be able to offer an annual energy of 536.31 GWh with the highest plant efficiency of 18.97% and a capacity factor of 60.7%. The performance of the proposed design in the two locations of Yanbu and Abha fares better when compared to the operational plant data of central receiver plant in Crescent Dunes. Based on the findings, the proposed 100 MWe central receiver Solar thermal power plants can be effectively implemented in KSA to meet the energy demands of the region.

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Gemechu, B. D., and M. E. Orlov. "Comparative technical and economic study of Hybrid Solar-Geothermal Power Plant in Ethiopia." Safety and Reliability of Power Industry 13, no. 4 (February 18, 2021): 296–303. http://dx.doi.org/10.24223/1999-5555-2020-13-4-296-303.

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This paper presents a techno-economic assessment of a hybrid solar-geothermal power plant that is modelled taking into account the available geothermal and solar energy resources at the Tendaho-1 (Dubti) geothermal field in Ethiopia. The hybrid power plant combines a single-flash geothermal power plant with a parabolic trough solar thermal plant to increase the energy level of geothermal steam. The geothermal fluid from one of the production wells at the geothermal site and the direct normal solar irradiance prevailing in the area offer the primary sources of energy used in the modelling. A thermodynamic analysis based on the principles of mass and energy conservation and a figure of merit analysis that allows evaluating the energy and economic performance of the hybrid power plant were performed. The technical and economic efficiency assessment was performed by comparing the performances of the hybrid power plant with a power system consisting of stand-alone geothermal and solar power plants. Results of the techno-economic assessment showed that for the same amount of energy inputs, depending on the available thermal energy storage capacity, a hybrid power plant generates up to 10.4% more electricity than a power system of two stand-alone power plants while generating a higher net present value at a lower cost of generation. In addition, the hybrid power plants with and without thermal storage system exhibit an economic figure of merit values of 2.62 and 3.42, i.e. the cost of solar resource per kWh of electricity in the hybrid energy system is reduced by 70.5% and 61.5%, respectively.

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Lanchi, Michela, Luca Turchetti, Salvatore Sau, Raffaele Liberatore, Stefano Cerbelli, Maria Anna Murmura, and Maria Cristina Annesini. "A Discussion of Possible Approaches to the Integration of Thermochemical Storage Systems in Concentrating Solar Power Plants." Energies 13, no. 18 (September 21, 2020): 4940. http://dx.doi.org/10.3390/en13184940.

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One of the most interesting perspectives for the development of concentrated solar power (CSP) is the storage of solar energy on a seasonal basis, intending to exploit the summer solar radiation in excess and use it in the winter months, thus stabilizing the yearly production and increasing the capacity factor of the plant. By using materials subject to reversible chemical reactions, and thus storing the thermal energy in the form of chemical energy, thermochemical storage systems can potentially serve to this purpose. The present work focuses on the identification of possible integration solutions between CSP plants and thermochemical systems for long-term energy storage, particularly for high-temperature systems such as central receiver plants. The analysis is restricted to storage systems potentially compatible with temperatures ranging from 700 to 1000 °C and using gases as heat transfer fluids. On the basis of the solar plant specifications, suitable reactive systems are identified and the process interfaces for the integration of solar plant/storage system/power block are discussed. The main operating conditions of the storage unit are defined for each considered case through process simulation.

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Joseph, Anto, Thanga Chelliah, Sze Lee, and Kyo-Beum Lee. "Reliability of Variable Speed Pumped-Storage Plant." Electronics 7, no. 10 (October 22, 2018): 265. http://dx.doi.org/10.3390/electronics7100265.

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The multi-channel (MC) back-to-back voltage source inverter (VSI)-fed doubly fed induction machine (DFIM) is emerging as a highly interesting topic in large-rated variable speed pumped-storage power plants (PSPP) in view of cost, optimal efficiency, and space requirements. Although the VSI is the fundamental part of the drive controlling the active/reactive power of the plant, redundancy is presently not adopted in practice causing the unit as a whole to shut down upon a failure in the converter and control circuit. This paper evaluates a large-rated (250 MW) DFIM-fed variable-speed unit of a PSPP in terms of its reliability and availability. A Markov model is developed to assess the reliability of the drive based on a number of factors including survivability and annual failure rate (FIT). Further, the Markov model is applied to different PSPPs for comparison of reliability among them.

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Nisar, Shahim. "Analysis of Thermal Energy Storage to a Combined Heat and Power Plant." International Journal for Research in Applied Science and Engineering Technology 9, no. 9 (September 30, 2021): 1313–20. http://dx.doi.org/10.22214/ijraset.2021.38182.

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Abstract: Thermal energy storage (TES) is a technology that stocks thermal energy by heating or cooling a storage medium so that the stored energy can be used at a later time for heating and cooling applications and power generation. TES systems are used particularly in buildings and in industrial processes. This paper is focused on TES technologies that provide a way of valorizing solar heat and reducing the energy demand of buildings. The principles of several energy storage methods and calculation of storage capacities are described. Sensible heat storage technologies, including water tank, underground and packed-bed storage methods, are briefly reviewed. Additionally, latent-heat storage systems associated with phase-change materials for use in solar heating/cooling of buildings, solar water heating, heat-pump systems, and concentrating solar power plants as well as thermo-chemical storage are discussed. Finally, cool thermal energy storage is also briefly reviewed and outstanding information on the performance and costs of TES systems are included.

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Song, Xiao Na, Yan Ping Hu, Jun Zheng, Pei Li, Xiao Xia Hou, and Wen Yi Liu. "Thermodynamic Modeling of Air Reservoir for CAES Power Plant." Advanced Materials Research 732-733 (August 2013): 209–12. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.209.

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CAES (Compressed Air Energy Storage) is an energy storage method which preserves electric energy in the form of air pressure potential energy. As the storage space, the internal air pressure of air reservoir significantly affects the performance of the CAES system. Based on a thorough study of variable pressure air reservoir of CAES, this paper puts forward a thermodynamic modeling method which could be perfectly applied in air pressure and temperature variation analysis. Modeling parameters are fitted by serving Huntorf power plant in Germany as reference case; results show that the obtained pressure curves match the actual curves, which in turn demonstrate the high accuracy of the model presented. By comparing different pressures under several working conditions, it is clear that alternately air releasing and air inflation effectively reduce throttling loss and the energy consumption of compressor, also system efficiency is improved.

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Ellingwood, Kevin, Seyed Safdarnejad, Khalid Rashid, and Kody Powell. "Leveraging Energy Storage in a Solar-Tower and Combined Cycle Hybrid Power Plant." Energies 12, no. 1 (December 24, 2018): 40. http://dx.doi.org/10.3390/en12010040.

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A method is presented to enhance solar penetration of a hybrid solar-combined cycle power plant integrated with a packed-bed thermal energy storage system. The hybrid plant is modeled using Simulink and employs systems-level automation. Feedback control regulates net power, collector temperature, and turbine firing temperature. A base-case plant is presented, and plant design is systematically modified to improve solar energy utilization. A novel recycling configuration enables robust control of collector temperature and net power during times of high solar activity. Recycling allows for improved solar energy utilization and a yearly solar fraction over 30%, while maintaining power control. During significant solar activity, excessive collector temperature and power setpoint mismatch are still observed with the proposed recycling configuration. A storage bypass is integrated with recycling, to lower storage charging rate. This operation results in diverting only a fraction of air flow to storage, which lowers the storage charging rate and improves solar energy utilization. Recycling with a storage bypass can handle larger solar inputs and a solar fraction over 70% occurs when following a drastic peaking power load. The novel plant configuration is estimated to reduce levelized cost of the plant by over 4% compared to the base-case plant.

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Priyadharson, Dr A. Selwin Mich. "Artificial Neural Network based Flow and Level Control for Energy Enhancement in a Pumped Storage Power Plant." Journal of Advanced Research in Dynamical and Control Systems 12, SP4 (March 31, 2020): 1883–92. http://dx.doi.org/10.5373/jardcs/v12sp4/20201675.

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Journal articles on the topic 'Storage power plant'

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