A hybrid CSP–CPV system for improving the dispatchability of solar power plants

Cocco, Daniele; Migliari, Luca; Petrollese, Mario

doi:10.1016/j.enconman.2016.02.015

Cited by 71 publications

(14 citation statements)

References 23 publications

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“…In the case of cloudy days or during night time, outputs of such plants are zero. CSP plants can function for prolonged hours because such plants may have additional storage for thermal energy which is exploited when sun is not available like night time [6]. Other than this feature, efficiency of PV plants decreases with time due to thermal degradation and cracks in the cell.…”

Section: System Efficiencymentioning

confidence: 99%

Advances in Concentrated Solar Power: A Perspective of Heat Transfer

Alnaimat¹,

Rashid²

2019

Heat and Mass Transfer - Advances in Science and Technology Applications

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Solar energy has the potential to reduce the dependence on the dwindling supply of fossil fuels through concentrated solar power (CSP) technology. CSP plants utilize solar thermal energy to produce electrical energy based on different thermodynamic power cycles. Solar collectors, reflectors, receivers, thermal fluid, and turbines are the main components of each CSP plant and involve intensive heat transfer at all stages. This chapter illustrates the thermal characteristics of the main components used in CSP technology. In addition, the solar thermal fluid characteristics and its stable operational ranges are discussed in this chapter. Heat capacity, vapor pressure, volume expansion, density and viscosity of the thermal fluid should not differ significantly at different temperatures during various operation stages because these variations can cause failure in the system, which is designed at the fixed material properties. Currently, CSP technology is associated with a higher cost compared to the electricity generated through gas power plants. Many efforts are made to search for sustainable and inexpensive materials to minimize the cost of CSP. One critical issue faced by CSP technology is the intermittent nature of the sun. Modern CSP plants integrate thermal energy storage (TES) unit to smoothen the power production or to shift the production from peak sunshine hours to peak demand hours.

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Section: System Efficiencymentioning

confidence: 99%

Advances in Concentrated Solar Power: A Perspective of Heat Transfer

Alnaimat¹,

Rashid²

2019

Heat and Mass Transfer - Advances in Science and Technology Applications

View full text Add to dashboard Cite

show abstract

“…At present, a CSP-PV hybrid power system is being built in Ottana of Italy, the system is comprised of a 600 kW linear Fresnel concentrated solar power with 15 MWh heat storage and a 400 kW photovoltaic system with 430 kWh battery. Cocco et al contrasted the two hybrid ways of the system, which are partially integrated and full-integrated, and found that the annual power generation and annual operating hours of the system on full-integrated were higher [11]. Cau et al optimized the system's operational strategy by meteorological condition to maximize the annual power generation of the system while meeting the energy conservation and the minimum climbing time [12].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design Method of a Hybrid CSP-PV Plant Based on Genetic Algorithm Considering the Operation Strategy

Zhai

Chen

Liu

et al. 2018

International Journal of Photoenergy

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Solar energy is the most abundant renewable energy and it has a great potential for development. There are two ways to transfer solar energy to electricity: photovoltaic power generation (PV) and concentrated solar power (CSP). CSP-PV hybrid system can be fully integrated with the advantages of the two systems to achieve low cost, stable output, and manageable to generate electricity. In this paper, the operation strategy of the CSP-PV system is proposed for parabolic trough CSP system and PV system which are now commercially operated. Genetic algorithm is used to optimize the design of the system and calculate PV-installed capacity, battery capacity, and storage capacity of CSP system, making the system to achieve the lowest cost of electricity generation. The results show that the introduction of the CSP system makes it possible to ensure the stability of the output power of hybrid system when the battery capacity is small, which greatly improves the annual utilization time of the PV and reduces solar abandonment. When the system is optimized by operation characteristics of Spring Equinox, the lowest LCOE is 0.0627 $/kWh, the rated capacity of PV and CSP system are 222.462 MW and 30 MW, respectively, and the capacity of heat storage and battery are 356.562 MWh and 14.687 MWh. When the system is optimized by the operation characteristics of the whole year, the lowest LCOE is 0.0555 $/kWh, the rated capacity of PV and CSP system are 242.954 MW and 30 MW, respectively, and the capacity of heat storage and battery are 136.059 MWh and 8.977 MWh. The comparison shows that the power generation curves of the hybrid system are similar in the two optimization-based methods—Spring Equinox based and annual based, but LCOE is lower when optimized by the annual operation characteristic, and the annual utilization rate of the system is higher when optimized by Spring Equinox based.

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“…The use of concentrated solar power (CSP) and concentrated photovoltaic (CPV) technologies to collect and store solar energy has several advantages over traditional solar collectors [1]. The integration of these technologies in one system can result in increased solar power concentration, enhanced optical efficiency, and better dispatchability of solar energy through thermal storage methods [2][3][4]. In this work, we have developed a hybrid thermal-PV solar energy collection system based on spectral beam splitting technology to increase the efficiency and exergy of solar plants, primarily for utility scale deployment, where typically hundreds of trough systems would be deployed to achieve megawatt level exergies.…”

Section: Introductionmentioning

confidence: 99%

Optical and mechanical tolerances in hybrid concentrated thermal-PV solar trough

Diaz¹,

Cocilovo²,

Miles³

et al. 2018

Opt. Express

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Hybrid thermal-PV solar trough collectors combine concentrated photovoltaics and concentrated solar power technology to harvest and store solar energy. In this work, the optical and mechanical requirements for optimal efficiency are analyzed using non-sequential ray tracing techniques. The results are used to generate opto-mechanical tolerances that can be compared to those of traditional solar collectors. We also explore ideas on how to relieve tracking tolerances for single-axis solar collectors. The objective is to establish a basis for tolerances required for the fabrication and manufacturing of hybrid solar trough collectors.

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A hybrid CSP–CPV system for improving the dispatchability of solar power plants

Cited by 71 publications

References 23 publications

Advances in Concentrated Solar Power: A Perspective of Heat Transfer

Advances in Concentrated Solar Power: A Perspective of Heat Transfer

Optimal Design Method of a Hybrid CSP-PV Plant Based on Genetic Algorithm Considering the Operation Strategy

Optical and mechanical tolerances in hybrid concentrated thermal-PV solar trough

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