Impact of thermal energy storage integration on the performance of a hybrid solar gas-turbine power plant

Grange, Benjamin; Dalet, C.; Falcoz, Quentin; Ferrière, Alain; Flamant, Gilles

doi:10.1016/j.applthermaleng.2016.05.175

Cited by 38 publications

(27 citation statements)

References 15 publications

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“…For this reason, the idea of pressurized tubular or opaque-heatexchanger-type receivers was revisited by several research groups. For example, Grange et al [16] investigated a modular metallic absorber located at the back of a cavity. The maximum air outlet temperature was reported to be 750°C.…”

Section: Introductionmentioning

confidence: 99%

“…However, although dispatchability is the key advantage of CSP (due to costeffective thermal energy storage) and its best argument to justify higher costs than PV or wind energy, only a few works have covered the integration of hightemperature TES upstream the solar combined cycle. Since only pressurized receivers have been applied so far in the context of solar-powered combined cycles, previous works have proposed the application of pressurized regenerative TES systems [16,18], which have clear limitations regarding cost-effective large-scale deployment.…”

Section: Introductionmentioning

confidence: 99%

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Techno-Economic Optimization and Benchmarking of a Solar-Only Powered Combined Cycle with High-Temperature TES Upstream the Gas Turbine

Zaversky¹,

Les²,

Sánchez³

et al. 2020

Green Energy and Environment

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This work presents a techno-economic parametric study of an innovative central receiver solar thermal power plant layout that applies the combined cycle (CC) as thermodynamic power cycle and a multi-tower solar field configuration together with open volumetric air receivers (OVARs). The topping gas turbine (GT) is powered by an air-air heat exchanger (two heat exchanger trains in the case of reheat). In order to provide dispatchability, a high-temperature thermocline TES system is placed upstream the gas turbine. The aim is threefold, (i) investigating whether the multi-tower concept has a techno-economic advantage with respect to conventional single-tower central receiver plants, (ii) indicating the technoeconomic optimum power plant configuration, and (iii) benchmarking the technoeconomic optimum of the CC plant against that of a conventional single-cycle Rankine steam plant with the same receiver and TES technology. It is concluded that the multi-tower configuration has a techno-economic advantage with respect to the conventional single-tower arrangement above a total nominal solar power level of about 150 MW. However, the benchmarking of the CC against a Rankine single-cycle power plant layout shows that the CC configuration has despite its higher solar-to-electric conversion efficiency a higher LCOE. The gain in electricity yield is not enough to outweigh the higher investment costs of the more complex CC plant layout.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Techno-Economic Optimization and Benchmarking of a Solar-Only Powered Combined Cycle with High-Temperature TES Upstream the Gas Turbine

Zaversky¹,

Les²,

Sánchez³

et al. 2020

Green Energy and Environment

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“…TES is far less expensive than battery storage typically used to offset transient photovoltaics or other intermittent sources. Considerable work has been carried out to investigate TES integration into CSP plants [5][6][7][8] and there is widespread literature on the benefits and types of TES used in CSP plants [9][10][11]. Such work has been carried out with a goal of improving design and performance of TES systems such as enhancement of heat transfer when TES is charged and discharged in various configurations.…”

Section: Introductionmentioning

confidence: 99%

“…This translates to more reliable operation of solar thermal plants, as well as increasing dispatchability of the converted energy to the grid during times of intermittent solar energy. Literature involving hybridization of CSP systems with natural gas is also quite abundant [6,[16][17][18]. Hybridization offers an additional path forward to enhance solar energy utilization in CSP systems, as it has been shown to increase solar-to-electric efficiency (STE) relative to solar-only plants.…”

Section: Introductionmentioning

confidence: 99%

Leveraging Energy Storage in a Solar-Tower and Combined Cycle Hybrid Power Plant

et al. 2018

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A method is presented to enhance solar penetration of a hybrid solar-combined cycle power plant integrated with a packed-bed thermal energy storage system. The hybrid plant is modeled using Simulink and employs systems-level automation. Feedback control regulates net power, collector temperature, and turbine firing temperature. A base-case plant is presented, and plant design is systematically modified to improve solar energy utilization. A novel recycling configuration enables robust control of collector temperature and net power during times of high solar activity. Recycling allows for improved solar energy utilization and a yearly solar fraction over 30%, while maintaining power control. During significant solar activity, excessive collector temperature and power setpoint mismatch are still observed with the proposed recycling configuration. A storage bypass is integrated with recycling, to lower storage charging rate. This operation results in diverting only a fraction of air flow to storage, which lowers the storage charging rate and improves solar energy utilization. Recycling with a storage bypass can handle larger solar inputs and a solar fraction over 70% occurs when following a drastic peaking power load. The novel plant configuration is estimated to reduce levelized cost of the plant by over 4% compared to the base-case plant.

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“…Results show that a recuperative plant working in hybrid mode has a fair potential to generate a stable power output with reduced fuel consumption and reduced greenhouse emissions. In [16] a HSGTPP (Hybrid solar gas turbine power plant) is considered with a solar heliostat field and a tower. The analysis has been made with and without the storage system.…”

Section: Introductionmentioning

confidence: 99%

Thermal Cycle and Combustion Analysis of a Solar-Assisted Micro Gas Turbine

et al. 2017

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Abstract:The authors discuss in this paper the potential of two power plant concepts for distributed generation, based on the integration of a cogenerating micro gas turbine with a solar panel array. The first one relies on the adoption of a parabolic trough network with an intermediate thermal carrier, while the second one considers the direct heating of the working air in a solar tower system. The first solution also includes a bottoming organic Rankine cycle (ORC) plant, so that it is mainly addressed to the power output increase. The second one involves a relevant temperature increase of the air entering the combustor, so allowing a direct fuel energy saving, whose amount is strongly variable with both the solar irradiance and the eventual part-load operation. In addition, the latter solar-assisted scheme involves noticeable variations in the conditions for the combustion development. This suggested the authors to proceed with a detailed CFD analysis of the combustion, after a preliminary thermal cycle study for highlighting the main benefits from the solar integration of the power plant.

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Impact of thermal energy storage integration on the performance of a hybrid solar gas-turbine power plant

Abstract: We model two hybrid solar gas turbine power plants. We compare different operating strategies. We evaluate the influence of the heat storage integration. The heat storage integration induces a high and stable electrical production.

Cited by 38 publications

References 15 publications

Techno-Economic Optimization and Benchmarking of a Solar-Only Powered Combined Cycle with High-Temperature TES Upstream the Gas Turbine

Techno-Economic Optimization and Benchmarking of a Solar-Only Powered Combined Cycle with High-Temperature TES Upstream the Gas Turbine

Leveraging Energy Storage in a Solar-Tower and Combined Cycle Hybrid Power Plant

Thermal Cycle and Combustion Analysis of a Solar-Assisted Micro Gas Turbine

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