Progress in dynamic simulation of thermal power plants

Alobaid, Falah; Mertens, Nicolas; Starkloff, Ralf; Lanz, Thomas; Heinze, Christian; Epple, Bernd

doi:10.1016/j.pecs.2016.11.001

Cited by 250 publications

(97 citation statements)

References 176 publications

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“…However, it does not give any information about the effects of dynamic changes in power system operation. This type of thermodynamic modelling is a perfect engineering tool to give a global view of the thermal cycle performance [5][6][7]. Table 4.…”

Section: Thermodynamic Analysis Of Power Unit In Off-design Conditionsmentioning

confidence: 99%

Analysis of Coal-Fired Power Unit Operation in Reduced Minimum Safe Load Regime

Żymełka¹,

Żyrkowski²,

Bujalski³

2018

Thermal Power Plants - New Trends and Recent Developments

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Large coal-fired power plants were typically designed as a base load units. Any changes in load level, as well as start-up time, are noticeably slow on that kind of units. However, in order to adapt to changing market conditions with increasing number of renewable energy sources, coal-fired power plants need to improve their flexibility. In the paper, 200 MWe class unit has been taken into consideration. During the test campaign, a minimum safe load of the unit was decreased from 60 to 40%. Paper presents results of a model that was made using Ebsilon ® Professional software. The simulation model is comprised of boiler and turbine part of the power unit. Obtained results were validated using measurements collected from the test campaign. Parameters important from the technical and economical point of view were investigated. Results revealed that simulation model can be utilised successfully to scrutinise coal-fired units under off-design operation conditions. As the outcome of the performed analysis, a number of issues related to low load operation of the coal-fired unit are presented and discussed. Paper indicates sensitive areas that need to be addressed when operation in decreased safe load is considered. Finally, overall potential for flexibility improvement for 200 MWe class coal-fired units has been evaluated.

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Section: Thermodynamic Analysis Of Power Unit In Off-design Conditionsmentioning

confidence: 99%

Analysis of Coal-Fired Power Unit Operation in Reduced Minimum Safe Load Regime

Żymełka¹,

Żyrkowski²,

Bujalski³

2018

Thermal Power Plants - New Trends and Recent Developments

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show abstract

Section: Calculation Of Productionmentioning

confidence: 99%

“…For more precise calculations of the temperature and efficiency of the PV panel, more complex dynamic thermodynamic models could be used. An overview of various thermodynamic models that could be used in this analysis was presented by Alobaid et al in [21]. Based on the available data about the direct and diffusion components of solar insolation on a horizontal surface, by using a methodology given in [20], the calculation of insolation ̅ on a panel surface for each hour in a year was carried out.…”

Section: Calculation Of Productionmentioning

confidence: 99%

Analysis of the Potential for Use of Floating PV Power Plant on the Skadar Lake for Electricity Supply of Aluminium Plant in Montenegro

Durković

Đurišić

2017

Energies

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This paper deals with a conceptual solution for the supply of a part of electrical energy for the needs of Aluminium Plant Podgorica (KAP) in Montenegro from a large Floating Photovoltaic Power Plant (FPPP), that would be installed on the nearby lake. The recommended FPPP, with an innovative azimuth angle control method and total installed power of 90 MWp, would consist of 18 power plants having an installed power of 5 MWp each. An analysis using the NREL solar insolation database ascertained that the recommended FPPP power plant can achieve a significantly higher production in comparison with previous solutions. An economic analysis has shown that the recommended power plant would yield positive economic indicators. Additionally, such a power plant would significantly contribute to the reduction of CO 2 emissions.

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“…Thermal power plant performance can be evaluated through energetic performance criteria, which are electrical power and thermal efficiency. In recent decades, exergy analysis of plant has been found as a useful method in the design, evaluation, optimization and improvement of thermal power plants [3][4][5]. Exergy analysis helps in finding the losses taking place in a system.…”

Section: Introductionmentioning

confidence: 99%

Ti Microholes Potential for Thermal Power Plants Application Punched by WC/Co Micropunch

Guo¹,

Tam²

2018

Thermal Power Plants - New Trends and Recent Developments

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The use of microholes is a potential approach to enhance fluid flow and heat exchange within thermal power plants, especially for the turbines. Ascribed to eco environmental competition, micropunching is extremely suitable for the mass production of micro features with friendly eco effects. Therefore, the morphology variation of micropunch and microhole during the punching with WC/Co micropunches was investigated by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and confocal laser. Results reveal that due to the optimal joint contribution of WC and Co, the formed microholes satisfy with the practical requirements in the quasi stable period. Moreover, the serious wear of micropunch occurs with the wear loss both of Co and WC when the punching number exceeds 1525. With the further increment in punching numbers, the dominant factors of the wear loss would mainly rely on the easily peeled off WC due to the serious loss of Co. In addition, the microholes can be adequately processed after about 30 min by natural sand grains. The quality of the hole would decrease with further increase in processing time and sand accumulation becomes severe.

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Progress in dynamic simulation of thermal power plants

Cited by 250 publications

References 176 publications

Analysis of Coal-Fired Power Unit Operation in Reduced Minimum Safe Load Regime

Analysis of Coal-Fired Power Unit Operation in Reduced Minimum Safe Load Regime

Analysis of the Potential for Use of Floating PV Power Plant on the Skadar Lake for Electricity Supply of Aluminium Plant in Montenegro

Ti Microholes Potential for Thermal Power Plants Application Punched by WC/Co Micropunch

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