Impact of steam generator start-up limitations on the performance of a parabolic trough solar power plant

Ferruzza, Davide; Topel, Monika; Laumert, Björn; Haglind, Fredrik

doi:10.1016/j.solener.2018.05.010

Cited by 16 publications

(15 citation statements)

References 20 publications

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“…A ramp-up rate of 7 ºC/min was selected for the evaporator. This value is within the optimal range of the ramp-up rates suggested by Ferruzza et al [3], suggesting that higher evaporator ramp-up rates will not lead to a significant increment of the annual energy production.…”

Section: Stress Analysis For the Start-up Proceduressupporting

confidence: 74%

“…Nevertheless, fast transient operations induce high thermal stresses on thick-walled components. And combining them with the typical operation of CSP plants, with daily start-ups, shut-downs and load changes, may compromise the structural integrity of critical components like the steam generator (SG) [3]. Under these operational conditions the use of on-line monitoring control is required [4].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic performance and stress analysis of the steam generator of parabolic trough solar power plants

González-Gómez

Gómez-Hernández

Ferruzza

et al. 2019

Applied Thermal Engineering

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Section: Stress Analysis For the Start-up Proceduressupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Dynamic performance and stress analysis of the steam generator of parabolic trough solar power plants

González-Gómez

Gómez-Hernández

Ferruzza

et al. 2019

Applied Thermal Engineering

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“…Generally the SGS, together with the steam turbines, poses limitations with regards to the rate of the power block start-up [6]. High temperature gradients induce high thermal stresses and therefore limit the lifetime of such components.…”

Section: Introductionmentioning

confidence: 99%

Design of header and coil steam generators for concentrating solar power applications accounting for low-cycle fatigue requirements

2019

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“…Considering an energy generation context with mixed energy sources, reducing the power generation variability from renewable sources has another indirect benefit worth mentioning, ie, a reduction in cycling of the fossil power plants in charge of meeting the challenge of ramping and providing reserve requirements, resulting in a twofold effect. The problem of the power block lifetime of CSP plants has been tackled in several works, from the standpoint of design and low‐level operation . From the perspective of the generation scheduling problem, few studies have carried out a deep analysis concerning how the penalization of generation changes affects the plant performance.…”

Section: Introductionmentioning

confidence: 99%

A binary‐regularization‐based model predictive control applied to generation scheduling in concentrating solar power plants

Cojocaru

Bravo

Vasallo

et al. 2019

Optim Control Appl Methods

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Summary This paper proposes the use of model predictive control (MPC) with binary‐regularization to manage the electric power generation problem in concentrating solar power plants with thermal energy storage. The main advantage of the of MPC with binary‐regularization formulation is the inclusion of a power block protection method based on a binary‐regularization term that penalizes power generation variation (also called generation cycling) differently according to the power block situation, ie, normal operation, startup, or shutdown. This distinction simplifies the choice of schedules with reduced variation and high energy sale profits. The interest in this reduction is the achievement of a higher lifetime of the power block elements, lower maintenance costs, and easier plant operability. A benefit of the generation scheduling based on MPC is the capacity of rescheduling the power generation at regular periods, taking advantage of the most recent energy prices and weather forecast, and of the plant's current state. An interesting question is if the proposed protection mechanism affects the economic results of the MPC black strategy. In this regard, an economic study based on a realistic simulation of a 50 MW parabolic trough collector‐based concentrating solar power plant with thermal energy storage, under the assumption of participation in the Spanish day‐ahead energy market scenario, is included. Realistic values for actual and forecasted solar resource and for energy price are used, and for penalties for deviation from the committed generation schedule. The economic study shows that the proposed scheduling method provides an important reduction of the generation cycling without decreasing energy sales profits. Another advantage of the proposed method is the possibility of estimating the highest level of power block protection, which maintains the profits by means of historical data, which favors its practical implementation.

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Impact of steam generator start-up limitations on the performance of a parabolic trough solar power plant

Cited by 16 publications

References 20 publications

Dynamic performance and stress analysis of the steam generator of parabolic trough solar power plants

Dynamic performance and stress analysis of the steam generator of parabolic trough solar power plants

Design of header and coil steam generators for concentrating solar power applications accounting for low-cycle fatigue requirements

A binary‐regularization‐based model predictive control applied to generation scheduling in concentrating solar power plants

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