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A Novel Multi-objective Dynamic Programming Optimization Method: Performance Management of a Solar Thermal Power Plant as a Case Study
摘要： Due to the intermittent nature of solar irradiance, solar power plants are usually equipped with energy storage systems. Suitable charge and discharge management of the storage systems can considerably help increase the reliability and profitability of the solar systems. In this regard, various optimization approaches, with their own strengths and limitations, have been employed by literature. Dynamic Programming (DP) is one of the fittest approaches for the wide range of engineering problems which exhibit the properties of overlapping sub-problems. DP is a simple, gradient-free, efficient, and deterministic optimization method that guarantees the optimal solution. However, this method has not been developed for multi-objective problems. This study develops a multi-objective DP method and employs it for the performance management of a solar power plant equipped with thermal energy storage system. “Daily electricity generation” and “daily revenue obtained from selling electricity” are considered to be the objective functions. The superiority of the developed method is shown through a comparison with one of the most commonly used multi-objective optimization approaches, NSGA-II. This comparison indicates that the multi-objective DP attains 3.0%- 7.5% greater values of electricity generation and 3.1%-12.6% higher values of revenue than NSGA-II, for the different levels of solar radiation.
关键词： Thermal Energy Storage System,Optimal Performance,Solar Thermal Power Plant,Multi-objective Dynamic Programming method
更新于2025-09-23 15:21:21
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[IEEE 2018 International conference on Computing, Electronic and Electrical Engineering (ICE Cube) - Quetta, Pakistan (2018.11.12-2018.11.13)] 2018 International Conference on Computing, Electronic and Electrical Engineering (ICE Cube) - Design and Simulation of Molten Salt Based Solar Thermal Power Plant using LFR Technology in Pakistan
摘要： Pakistan being an underdeveloped country is facing several problems. One of the most important problems of the country has been Energy crises. Pakistan has very rich resources of renewable energy which are yet to be utilized. Among these renewable energy resources, energy from sun is one of the most abundant one. Concentrated Solar power CSP is considered to be the best technology to generate electricity for solar energy. Design of a CSP plant with a capacity of 100 MW using Linear Fresnel Reflectors and integrated with thermal energy storage of six hour is proposed in this paper. A location near Nawabshah receiving direct normal irradiance (DNI) of 1955 KWh/m2/year is selected on the basis of CSP plant requirements. System advisor model (SAM) selected for carrying out the simulation of the proposed plant for one year. Heat transfer fluid is molten salt known as Hitec solar Salt instead of using synthetic oil. From simulation results it was found that the plant can generate 220,734,832 kWh (220.735 GWh) of electricity annually. The capacity factor and gross to net conversion were found to be 25.2% and 90% respectively. These results obtained are encouraging and justify that a plant based on the proposed model is thermodynamically feasible in Pakistani environment.
关键词： Solar Energy,Concentrated Solar Thermal Power,Renewable Energy,Electricity,System Advisor Model,Pakistan,Linear Fresnel Reflector
更新于2025-09-19 17:15:36
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Solar Engineering of Thermal Processes, Photovoltaics and Wind || Solar Thermal Power Systems
摘要： Conversion of solar to mechanical and electrical energy has been the objective of experiments for over a century. In 1872, Mouchot exhibited a steam-powered printing press at the Paris Exposition, in 1902 the Pasadena Ostrich Farm system was exhibited, and in 1913 a solar-operated irrigation plant started its brief period of operation at Meadi, Egypt. These and other developments utilized concentrating collectors to supply steam to heat engines. An interesting historical review of these experiments is provided by Jordan and Ibele (1956). In May of 2002 the ASME Journal of Solar Energy Engineering published a special issue on solar thermal power.
关键词： heat engines,mechanical energy,electrical energy,solar thermal power,concentrating collectors
更新于2025-09-16 10:30:52
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Techno-economic analysis of using three Fresnel solar fields coupled to a thermal power plant for different cost of natural gas
摘要： In this paper, the effect of using three solar ?elds in a solar thermal power plant has been evaluated. Two separate solar direct steam generations are used to provide a portion of the energy required by the high-pressure turbine and low-pressure turbine. The third solar ?eld is used for molten salt energy storage. If the energy stored during the daytime is not enough, the fossil fuel boiler will provide the rest of the energy needed. Given the current price of natural gas, the use of solar energy is not cost-effective, regardless of environmental issues, government incentives or external costs, such as health costs. Furthermore, the use of solar energy for the power plant was unable to make a signi?cant reduction in electricity cost, regardless the 3.5$/MMBTU natural gas price. However, considering the complexity of the solar system, the use of solar energy for the price of the current natural gas is not recommended. By increasing the price of natural gas, the use of solar energy is more economically feasible. The results of the study show that the use of three solar ?elds (two separate solar ?elds to produce superheated steam for a high-pressure turbine and low-pressure turbine and a solar ?eld for energy storage using molten salt as thermal energy storage medium) rather than one solar ?eld reduces electricity consumption by 1.83%e13.78% for the price of 9 $/MMBtu natural gas. Although each of the ?rst and second solar ?elds produce different energy quantities, and therefore, require different ?eld areas, the ?eld coef?cient of the ?eld is the same for both solar ?elds.
关键词： Solar thermal power plant,LFR solar collector,Hybrid systems
更新于2025-09-12 10:27:22
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AIP Conference Proceedings [Author(s) SolarPACES 2017: International Conference on Concentrating Solar Power and Chemical Energy Systems - Santiago, Chile (26–29 September 2017)] - MicroSol-R: Versatile solar facility for research and industry
摘要： Since February 2016, a new CSP micro-power plant called “MicroSol-R” is in operation at PROMES-CNRS. This platform aims at developing research and innovation in the field of heat transfer fluids, thermal energy storage, solar thermal power conversion at small scale, power plant operation strategy, etc. In addition, it was designed to be a useful tool for training. MicroSol-R is a versatile facility open to collaboration with industry and laboratories. This paper presents the facility and first results after one year of operation. The performances and characteristics of the solar field, the thermocline heat storage and the organic Rankine cycle are presented.
关键词： CSP,thermal energy storage,solar thermal power,heat transfer fluids,organic Rankine cycle,MicroSol-R
更新于2025-09-04 15:30:14
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High‐Temperature Phase Change Material (PCM) Selection for Concentrating Solar Power Tower Applications
摘要： With current concerns about the environmental impact of greenhouse gas emissions, reducing our reliance on fossil fuels has become an ever-growing necessity. A thermal energy storage system that utilizes phase change materials (PCMs) in the form of molten salts, coupled with a concentrating solar power tower plant, is proposed as an effective means of achieving highly efficient and cost competitive power generation on par with traditional fossil fuel–based power. In this study, a set of five selection criteria are applied to a wide range of salt mixtures to determine the best candidates for use as PCMs. The selection criteria include the salt mixture’s melting temperature, latent heat, thermal conductivity, material safety, and cost. A shortlist of 20 salt candidates is made, and differential scanning calorimetry experiments are performed on them to verify the thermal properties of these candidates. A final list of eight salts is then selected as the best PCMs for use in a working temperature range between 500 and 800 °C.
关键词： salt selection,solar thermal power,thermal energy storage,latent heat,molten salts
更新于2025-09-04 15:30:14
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AIP Conference Proceedings [Author(s) 3RD INTERNATIONAL CONFERENCE ON MATERIALS SCIENCE, RESOURCE AND ENVIRONMENTAL ENGINEERING (MSREE 2018) - Changsha City, China (26–28 October 2018)] - Review of concentrating solar thermal power in China: Status quo, problems and countermeasures
摘要： Currently, the concentrating solar thermal power (CSP) has been confronted with great opportunity for further development. As a strategic emerging industry in China, the CSP meets the appeals of the Belt and Road strategy from manufacturing to practical applications. Therefore, to development the CSP in depth is of vital significance to promote power supply structure transformation, energy saving and emission reduction, as well as energy security in China. However, the development of China’s CSP industry at present is still at the initial stage, with a few problems seriously hindering the large-scale and sustainable development of the industry. In view of this, this paper systematically analyzes China’s CSP industry. Firstly, it conducts a detailed research on the industry status quo. On that basis, it deeply studies the existing issues and future development trend. Finally, it puts forward a series of feasible countermeasures, laying a solid foundation for the development of the CSP industry and the transformation of energy structure in China.
关键词： Concentrating Solar Thermal Power (CSP),China,Power Supply Structure Transformation,Renewable Energy
更新于2025-09-04 15:30:14