Evaluation of Flexibility Optimization for Thermal Power Plants

2018 ◽  
Author(s):  
Moritz Hübel ◽  
Jens Hinrich Prause ◽  
Conrad Gierow ◽  
Egon Hassel ◽  
Raphael Wittenburg ◽  
...  
Keyword(s):  
Power Plant ◽  
Electricity Market ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Economic Effects ◽  
Economic Evaluations ◽  
Start Ups ◽  
Flexibility Parameters ◽  
Operational Schedule

The increasing share of fluctuating renewable energy sources leads to changing requirements for conventional power plants. The changing characteristics of the residual load requires the conventional fleet to operate with higher load gradients, lower minimum load at improved efficiency levels as well as faster start-ups and provision of ancillary services. Despite the requirements from the electricity market, the value of improving those flexibility parameters is hard to evaluate for power plant operators. In order to quantify the additional benefit that can be achieved by improving flexibility parameters on a certain power plant in a changing market environment, an adjustable load dispatch model has developed for that purpose. Using past electricity market data, the model is validated for typical coal and a typical gas fired power plants by reproducing their operational schedule. In the next step, the model is used to apply parameter changes to the power plants specifications and economic effects are demonstrated. General statements are derived on which flexibility parameter needs to be improved on each power plant type. Furthermore, specific economic evaluations are shown for the reference power plants in order to present the ability of the developed tool to support investment decisions for modernization projects of existing power plants.

scholarly journals Analyzing Trade in Continuous Intra-Day Electricity Market: An Agent-Based Modeling Approach

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3860
Author(s):  
Priyanka Shinde ◽  
Ioannis Boukas ◽  
David Radu ◽  
Miguel Manuel de Manuel de Villena ◽  
Mikael Amelin
Keyword(s):  
Renewable Energy ◽  
Electricity Market ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Agent Based Modeling ◽  
Market Liquidity ◽  
Energy Sources ◽  
Modeling Framework ◽  
Agent Based

In recent years, the vast penetration of renewable energy sources has introduced a large degree of uncertainty into the power system, thus leading to increased trading activity in the continuous intra-day electricity market. In this paper, we propose an agent-based modeling framework to analyze the behavior and the interactions between renewable energy sources, consumers and thermal power plants in the European Continuous Intra-day (CID) market. Additionally, we propose a novel adaptive trading strategy that can be used by the agents that participate in CID market. The agents learn how to adapt their behavior according to the arrival of new information and how to react to changing market conditions by updating their willingness to trade. A comparative analysis was performed to study the behavior of agents when they adopt the proposed strategy as opposed to other benchmark strategies. The effects of unexpected outages and information asymmetry on the market evolution and the market liquidity were also investigated.

scholarly journals Spatial-Economic Potential Analysis of Wind Power Plants in Germany

Wind ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 77-89
Author(s):  
David Hennecke ◽  
Carsten Croonenbroeck
Keyword(s):  
Power Plant ◽  
Wind Power ◽  
Electricity Market ◽  
Regional Planning ◽  
Power Plants ◽  
Large Scale ◽  
Renewable Energy Sources ◽  
Levelized Cost Of Electricity ◽  
Potential Analysis ◽  
Federal States

Before a new wind farm can be built, politics and regional planning must approve of the respective area as a suitable site. For this purpose, large-scale potential computations were carried out to identify suitable areas. The calculation of wind power plant potential usually focuses on capturing the highest energy potential. In Germany, due to an energy production reimbursement factor defined in the Renewable Energy Sources Act (“Erneuerbare-Energien-Gesetz”, EEG) in 2017, the influence of energy quantities on the power plant potential varies, economically and spatially. Therefore, in addition to the calculation of energy potentials, it was also necessary to perform a potential analysis in terms of economic efficiency. This allows, on the one hand, an economic review of the areas tendered by the regional planning and, on the other hand, a spatial-economic analysis that expands the parameters in the search for new areas. In this work, (a) potentials with regard to the levelized cost of electricity (LCOE) were calculated by the example of the electricity market in Germany, which were then (b) spatially and statistically processed on the level of the federal states.

scholarly journals COST BENEFIT ANALYSIS OF INSTALLING OF VARIOUS POWER PLANTS USING DIFFERENT PARAMETER

2020 ◽  
Vol 4 (3) ◽  
pp. 30-34
Author(s):  
Amit Kishanpuri ◽  
A.K. Sharma
Keyword(s):  
Solar Wind ◽  
Renewable Energy ◽  
Power Plant ◽  
Nuclear Power ◽  
Power Plants ◽  
Cost Benefit Analysis ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Energy Sources ◽  
Alternative Source

There are many type power plant in India such as Thermal power plant, hydel power plant ,nuclear power plant , solar power plant and wind power plant . In this paper, we are presentedthe renewable energy sources in order to meet an energetic demand in India with a lowestcost. These are beneficial the renewable energy sources like solar, wind, etc. This studyfocuses on making use renewable sources as an alternative source of energy. Renewableenergy sources like solar, wind and renewable energy due to its availability, continuity andcleanness.

Uticaj tržišnih cena električne energije na isplativost buduće reverzibilne hidroelektrane u Srbiji

2021 ◽  
Vol XXIII (4) ◽  
pp. 23-30
Author(s):  
Radoš Čabarkapa ◽  
◽  
Vladimir Šiljkut ◽  
Danilo Komatina ◽  
Miroslav Tomašević
Keyword(s):  
Electricity Market ◽  
Power Plants ◽  
Cost Benefit Analysis ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Pollution Prevention ◽  
Cost Benefit ◽  
Hydropower Plant ◽  
Electricity Prices ◽  
The Impact

Deregulation in the power sector, liberalization of the electricity market, tendency to connect markets across Europe, introduction of incentives for construction and use of renewable energy sources (RES) and - consequently - their increasing presence in electricity systems, have taken a decisive impact on wholesale electricity prices. In addition, the introduction of CO2 taxes has further increased overall electricity prices. On the other hand, it reduced the profits of fossil fuel thermal power plants (TPPs). Also, in order to meet the prescribed requirements in the field of environmental protection, TPPs must apply pollution prevention systems that are very expensive, both in terms of investment and exploitation. As an alternative, investments in the hydro sector should be considered. However, this option is characterized by other issues; In contrast to the long-term construction and exploitation of hydro capacity, there are fluctuations in electricity prices on the day-ahead market which affect the work schedule and revenues of these facilities. To investigate this problem, hourly and daily prices in the regional electricity market were analysed. Trends in wholesale electricity prices on the day-ahead market have been determined. Their relevant values were estimated and used as one of the sets of input data for cost-benefit analysis and sensitivity analysis of the case study - future reversible hydropower plant (RHPP) "Bistrica". The impact of fluctuations in electricity prices on the day-ahead market was emphasized. The aim of this research was to draw a conclusion as to whether the movement of these prices is in favour of the construction of possible RHPPs in Serbia. Based on the conducted analyses, it can be concluded that the upward trend in the level of wholesale electricity prices (which began in 2019 and is expected to continue in the future considering the EU regulatory policy regarding CO2 emissions taxes) may positively affect the profitability of investment in RHE Bistrica (i.e. to shorten the payback period), but not so dramatically, since with the increase in electricity prices, the costs for pumping also increase.

scholarly journals Electricity efficiency of auxiliary power systems in coal thermal power plant

2020 ◽  
Vol 11 (2) ◽  
pp. 101-110
Author(s):  
Azrina Mujanović ◽  
Tatjana Konjić ◽  
Adisa Dedić
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Energy Sources ◽  
Thermal Power Plants ◽  
Auxiliary Power ◽  
Generator Output

Renewable energy sources such as hydro, wind and solar energy are taking an increasing share in the electricity mix. However, electricity production from thermal power plants is independent of the weather conditions and is still important as a back-up power source to renewable energy sources. Given the fact that the electricity market is open, it is clear that each MWh is important. Therefore, auxiliary power systems as a part of thermal power plants should be also energy efficient. The main aim of the presented research was to investigate the efficient operation of different consumers in the auxiliary power system in the old-dated thermal power plant ‘’Tuzla’’ depending on different power at generator output. The performed analysis identified consumers suitable for electricity efficiency improvement giving results of power savings obtained on modestly available measurements and old-date technical documentation. Following obtained results, some recommendations for improving electricity efficiency were proposed with a rough calculation of possible savings. Measurements of auxiliary power system consumption depending on power at generator output in new thermal power plant ‘’Stanari’’ was presented. Future trends and directions in thermal power plant automation were also discussed.

Analiza ekonomske opravdanosti investiranja u solarnu elektranu sa vertikalno postavljenim bifacijalnim fotonaponskim modulima u perspektivnim uslovima slobodnog tržišta

2021 ◽  
Vol 23 (1) ◽  
pp. 22-28
Author(s):  
Đorđe Lazović ◽  
◽  
Kristina Džodić ◽  
Željko Đurišić
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Electricity Market ◽  
Power Plants ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Plant Production ◽  
Energy Sources ◽  
Solar Power Plant ◽  
The Future

The future of European energy is moving towards a single European electricity market and an increasing share of renewables in the overall production mix. After the expiration of governmental incentive measures, power plants based on renewable energy sources will enter the liberalized market, where electricity prices will largely depend on the production of renewable energy sources. In order to achieve the maximum possible profit of the power plant under such conditions, it is necessary to consider the possibility of investing in solutions that are less represented today, but with the prospect of being more profitable in the future. Such a solution is a solar power plant consisting of vertically placed bifacial modules whose active surfaces are oriented in the east-west direction. This configuration of the power plant can achieve higher production in periods of high prices, and thus higher profits from the sale of electricity. On the other hand, such a solution is more expensive than a standard solar power plant with monofacial modules. In this paper, a comparison of return on investment in a bifacial power plant and a monofacial power plant with existing and prospective market conditions is performed. PVsyst software was used to analyze the solar potential and production profiles of photovoltaic power plants. The influence of solar power plant production on the price of electricity was investigated on the example of Germany. Based on this research, a prognostic model of the daily price diagram on the unified European market until 2040 was formed which served for the analysis of the profitability of investments in the two considered variants of the solar power plant realization.

Analiza ekonomske opravdanosti investiranja u solarnu elektranu sa vertikalno postavljenim bifacijalnim fotonaponskim modulima u perspektivnim uslovima slobodnog tržišta

2021 ◽  
Vol 23 (3) ◽  
pp. 37-44
Author(s):  
Đorđe Lazović ◽  
◽  
Kristina Džodić ◽  
Željko Đurišić
Keyword(s):  
Power Plant ◽  
Electricity Market ◽  
Power Plants ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Economic Feasibility ◽  
Plant Production ◽  
Solar Power Plant ◽  
Solar Power Plants ◽  
East West

After the expiration of governmental incentive measures for renewable energy sources integration, economic feasibility of investing into solar power plants will highly depend on compatibility between production and variable prices. In order to achieve the maximum possible profit of the power plant in liberalized electricity market, it is necessary to consider the possibility of investing in solutions that are not common today, but with the potential of being more profitable in the future. Such a solution is a solar power plant consisting of vertically placed bifacial modules whose active surfaces are oriented in the east-west direction. This configuration of the power plant can achieve higher production in periods of high prices, and thus higher profits from the sale of electricity. On the other hand, such a solution is more expensive than a standard solar power plant with monofacial modules. In this paper, a comparison of return on investment in a bifacial power plant and a monofacial power plant with existing and prospective market conditions is performed. The influence of solar power plant production on the price of electricity was investigated on the example of Germany. Based on this research, a prognostic model of the daily price diagram on the unified European market until 2040 was formed. It served for the analysis of the profitability of investments in the two considered variants of the solar power plant realization.

INTEGRATION OF THE HEAT EXCHANGE PROCESS OF POWER PLANT

2021 ◽  
pp. 41-48
Author(s):  
Yu. Selikhov ◽  
V. Kotsarenko ◽  
K. Gorbunov
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Exchange Process ◽  
Thermal Power ◽  
Environmental Safety ◽  
The United States ◽  
Hot Water ◽  
Energy Sources

Renewable energy sources (RES) are not limited by geologically accumulated reserves. Their use and consumption will not lead to the inevitable depletion of the Earth's reserves, and they do not pollute the environment. The main motive for the accelerated development of renewable energy in Europe, the United States and many other countries is concern for energy independence and environmental safety. Thus, the EU has adopted a program to achieve the contribution of renewable energy sources to the energy balance by 2020 up to 20%, and by 2040 – up to 40%. Renewable energy is characterized by versatility and diversity. In the list of tasks arising in the implementation of renewable energy (RE) projects (except technological and technical), there are issues of assessing the possibility and efficiency of using RES for energy supply to the regions. At the same time, it should be borne in mind that often the user is interested in comprehensive assessments for various types of energy sources. In specific regions, the most effective can be either the use of hybrid power plants, or the creation of thermal power plants using various types of renewable energy. In connection with the complexity of this problem, as well as the geographic “regionality” of renewable energy, the topic of this article becomes possible and relevant. A heat and power plant is proposed for supplying: electricity, hot water, hot air and heating, in which, together with a wind power generator, a double-circuit solar installation, a heat pump, electricity and heat accumulators are used. This installation allows to reduce the cost of heat energy by reducing material consumption and costs of equipment used, to save fossil fuel; produce electricity and supply the surplus to the state power grid; reduce heat load and environmental pollution.

scholarly journals Increasing flexibility of coal power plant by control system modifications

2016 ◽  
Vol 20 (4) ◽  
pp. 1161-1169 ◽  
Author(s):  
Ante Marusic ◽  
Drazen Loncar ◽  
Jakov Batelic ◽  
Valdi Frankovic
Keyword(s):  
Control System ◽  
Thermal Stress ◽  
Power Plant ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Steam Temperature ◽  
Coal Power Plant ◽  
Safety Margins ◽  
Coal Power

Expanding implementation of intermittent renewable energy sources has already started to change the role of thermal power plants in energy systems across Europe. Traditionally base load plants are now forced to operate as peaking plants. A familiar transition in upcoming years is expected in Croatia and coal power plant operators are preparing accordingly. To evaluate cycling capabilities and control system operation for flexible operation of selected 210 MW coal plant, series of tests with different load gradients were performed and results were thoroughly analyzed. Two possible ?bottlenecks? are identified, thermal stress in superheater header, and achievable ramping rate considering operational limitations of coal feeders, firing system and evaporator dynamics. Several unexpected readings were observed, usually caused by malfunctioning sensors and equipment, resulting in unexpected oscillations of superheated steam temperature. Based on superheater geometry and experimental data, maximal steam temperature gradient during ramping was evaluated. Since thermal stress was well inside the safety margins, the simulation model of the whole boiler was used to evaluate achievable ramping on electric side.

Development of a New High-Performance Martensitic Heat-Resistant Steel for Boiler Applications

2018 ◽  
Author(s):  
Marko Subanović ◽  
Javier Pirón ◽  
Frank Zeller ◽  
Mahmud Jarrar ◽  
André Schneider
Keyword(s):  
Power Plant ◽  
High Performance ◽  
Power Plants ◽  
Oxidation Behavior ◽  
Rupture Strength ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Steam Oxidation ◽  
High Temperature Strength ◽  
Original Design

The realization of advanced thermal power plants with increased efficiencies requires the development of new materials with enhanced capabilities in respect to high temperature strength and steam oxidation behavior. The change in the environmental policy and the increasing contribution of renewable energy sources into the public electric grid has changed the operation mode of the existing power plants in Europe. Instead of quasi stationary operation, for which the conventional thermal power plant fleet was designed, cyclic operation modes will dominate the power plant service lifetime. The creep-fatigue phenomena, however, may be responsible for significant lifetime reductions compared with the original design lifetime. Revamping of the existing power plants by application of “stronger” materials with improved steam-oxidation behavior, allowing wall thickness reduction can be a possible way to address the topic. Recently, Vallourec developed a new high-Cr ferritic-martensitic steel that combines excellent creep rupture strength properties and enhanced steam oxidation resistance of 12%Cr steels such as VM12-SHC or X20CrMoV11-1. Industrial products were successfully manufactured and the creep and steam oxidation properties were validated.

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