Combination of PV and central receiver CSP plants for base load power generation in South Africa

Pan, Christoph Adrian; Dinter, Frank

doi:10.1016/j.solener.2017.02.052

Cited by 74 publications

(18 citation statements)

References 4 publications

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“…The performance of PV and CSP plants highly influences the final simulation process, in terms of annual energy and LCOE calculation. For this reason, the models proposed in the previous sections have been validated via the SAM tools [35] that have been used through many researches [11,39]. In particular, Figure 3 illustrates the monthly values of the energy production achieved with SAM and proposed models.…”

Section: International Journal Of Photoenergymentioning

confidence: 99%

“…Within this context, PV and CSP may be perceived as competitors, but they proved to be complementary [1]. The idea of solution is to implement the two technologies in a single system in order to get a PV-CSP hybrid system to respond efficiently to a given need and increase the penetration of solar energy into the mixed electricity supply [11]. The hybrid PV-CSP system that combines the production of a low cost from the PV and dispatchable production from CSP results in a potentially more cost-effective production system compared to the two technologies alone [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Several studies show the high efficiency of a hybrid PV-CSP system; Platzer [14] combines the 50 MW CSP system (parabolic trough) with 12 h storage with 75 MW concentrating photovoltaic plant (CPV) to increase the operation duration of the hybrid plant; in another study [15], he combines CSP (Fresnel molten salt power plant) and CPV, which permits to reach a high capacity factor and simultaneously a lower LCOE than for a CSP power plant alone. A similar concept [11] has been implemented by combining 100 MW CSP tower plant with 100 MW PV plant to supply 100 MW baseload capacity to the South-African electricity grid. In another study, the hybrid PV-CSP plant proves that it is possible to make a continuous production of electricity to supply intermediate and peak load [16].…”

Section: Introductionmentioning

confidence: 99%

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Modelling and Assessing the Performance of Hybrid PV-CSP Plants in Morocco: A Parametric Study

Bousselamti

Cherkaoui

2019

International Journal of Photoenergy

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Based on the examination of the efficiency of solar plants, this study focuses on three main plants: a photovoltaic (PV) plant, a concentrated solar power (CSP) plant, and a hybrid PV/CSP plant. The modelling of the three plants has been implemented to evaluate the influence of design parameters (orientation angles, solar multiple (SM), thermal energy storage capacity (TES), and fraction of hybridization) on them. Several simulations have been recreated and discussed in details to study the optimal configuration of the two first plants and the profitability of the PV/CSP plants for Ouarzazate (Morocco) location. The findings demonstrate that the optimal orientation angles and TES/SM, respectively, affect the performances of PV and CSP plants, and they also reveal that PV/CSP systems have the benefits to increase the annual energy produced, reduce the cost, and offer a high dispatchability to supply a baseload. The implementing of optimal PV/CSP plant has a great economic impact on Ouarzazate city.

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Section: International Journal Of Photoenergymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modelling and Assessing the Performance of Hybrid PV-CSP Plants in Morocco: A Parametric Study

Bousselamti

Cherkaoui

2019

International Journal of Photoenergy

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“…issues, several techniques are being developed; using two-stage accumulators [5], two oriented solar receivers with one separator and more efficient absorbers [6], and using the combination of photovoltaic and concentrated solar power plants [7].…”

Section: Introductionmentioning

confidence: 99%

Mixed Logical Dynamical Nonlinear Model Predictive Controller for Large‐Scale Solar Fields

Elias

Mendes

Normey-Rico

2019

Asian Journal of Control

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This paper presents a control algorithm for reducing heat losses caused by clouds in large solar fields. The formulation is based on a Mixed Logical Dynamical (MLD) representation of the solar field plus the application of a Practical Nonlinear Model Predictive Controller (PNMPC) for calculating the optimal control action. The main purpose of the controller is to deactivate fields with inlet temperature greater than outlet temperature and to manipulate the oil flow rate of the activated fields for tracking the reference of the outlet temperature. A simplified lumped parameters model is used for prediction and simulation of the solar fields.

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“…However, for this project HOMER is unsuitable due to its inability to model CST with thermal storage. This is evidenced in the studies into CST hybrids opting for other options, such as SAM (Pan and Dinter, 2017), TRYNSYS and SAM (Starke et al, 2016), and TRYNSYS and MATLAB (Starke et al, 2018).…”

Section: Analysis Techniques Employedmentioning

confidence: 98%

UQ eSpace

Balaji¹

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The electrification of remote locations that lack grid-connectivity is a global challenge. In Australia, off-grid electricity accounts for 6% of total generation. At present these needs are met through the use of fossil fuels, resulting in a high electricity cost, and environmental consequences. With the present drive towards reducing greenhouse gas emissions and increasing the use of renewable energies, there is an opportunity to transition from the use of fossil fuels in remote locations to the use of renewables. In this regard, the hybridisation of renewable technologies with diesel generators has been shown to improve reliability and increase penetration. This project aims to explore the use of a hybrid renewable energy system consisting of solar photovoltaic (PV) with battery storage, concentrating solar thermal (CST) with thermal storage and diesel generators for off-grid power generation. The analysis considers two major consumer groups, viz. mining sites and communities, at three locations-Newman, Port Augusta and Halls Creek. In particular, the solar thermal system explored utilises a supercritical carbon dioxide power cycle, due to the suitability of this technology at scales appropriate for off-grid use. This is necessitated due to the fact that existing CST plants typically utilise a steam Rankine cycle, which suffers reduced efficiencies at small scales. Based on the existing literature, the proposed technologies have been found to present excellent suitability to this application. A key area of interest with regards to the CST plant is the turbine inlet temperature, due to higher temperatures presenting a higher power cycle efficiency, which offers a route to reduce energy costs. However, these higher temperatures increase the power cycle and receiver costs, due to the requirement of higher performance materials. Increases in receiver losses are also seen at higher temperatures. Similarly, the CST plant also presents increasing field losses with increasing size. In this analysis, three turbine inlet temperatures (namely 650°C, 800°C and 1000°C) are explored. A Python program was developed, encapsulating the thermodynamics and operating characteristics of each technology, to simulate the performance of the hybrid system over the course of one year, based on weather data and a synthetic load profile. This simulation was then used along with an optimisation function to identify the optimal mix of technologies in the hybrid system based on the minimum levelised cost of energy (LCOE). Using this program, results were generated for community and mining consumer groups at the three locations, and it was found that in both cases the optimal mix consists of CST as the primary source of baseload power, with 12-15 hours of thermal storage. While PV and diesel generators were both shown to be necessary, they represent a smaller fraction of the total energy production and serve as supplementary sources of power. Notably, none of the optima included battery storage, highlighting the high costs of this technology ...

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Combination of PV and central receiver CSP plants for base load power generation in South Africa

Cited by 74 publications

References 4 publications

Modelling and Assessing the Performance of Hybrid PV-CSP Plants in Morocco: A Parametric Study

Modelling and Assessing the Performance of Hybrid PV-CSP Plants in Morocco: A Parametric Study

Mixed Logical Dynamical Nonlinear Model Predictive Controller for Large‐Scale Solar Fields

UQ eSpace

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