Optimal start-up operating strategies for gas-boosted parabolic trough solar power plants

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

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Concentrating solar power plants are taking an increasing share in the renewable energy generation market. Parabolic trough is one of such technologies and the most commercially mature. However, this technology still suffers from technical challenges that need to be addressed. As these power plants experience daily start-up procedures, the optimal performance in transient operation needs to be considered. This paper presents a performance based modelling tool for a gas-boosted parabolic trough power plant. The objective of the paper is to define an optimal operational strategy of the power plant start-up procedure with the aim of minimizing its fuel consumption while at the same time maximizing its electric energy output, taking into account all the thermo-mechanical constraints involved in the procedure. Heating rate constraints of the steam generator and the booster heater, and the steam turbine start-up schedule were considered. The simulation model was developed based on a power plant located near Abu Dhabi, and was validated against real operational data with a maximum integral relative deviation of 4.3% for gross electric energy production. A multi-objective optimization was performed for a typical operating week during winter and spring weather conditions. The results suggest that in order to minimize the fuel consumption and at the same time maximize the electric energy production, an evaporator heating rate of 6 K/min is an optimal value both for winter and spring conditions.
Original languageEnglish
JournalSolar Energy
Volume176
Pages (from-to)589-603
ISSN0038-092X
DOIs
Publication statusPublished - 2018

Keywords

  • Solar energy
  • Concentrating solar power
  • Parabolic trough power plant
  • Steam generator
  • Steam turbine
  • Start-up
  • Hybridization
  • Operation strategy
  • Flexibility
  • Optimization

Cite this

Ferruzza, Davide ; Topel, Monika ; Laumert, Björn ; Haglind, Fredrik. / Optimal start-up operating strategies for gas-boosted parabolic trough solar power plants. In: Solar Energy. 2018 ; Vol. 176. pp. 589-603.
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title = "Optimal start-up operating strategies for gas-boosted parabolic trough solar power plants",
abstract = "Concentrating solar power plants are taking an increasing share in the renewable energy generation market. Parabolic trough is one of such technologies and the most commercially mature. However, this technology still suffers from technical challenges that need to be addressed. As these power plants experience daily start-up procedures, the optimal performance in transient operation needs to be considered. This paper presents a performance based modelling tool for a gas-boosted parabolic trough power plant. The objective of the paper is to define an optimal operational strategy of the power plant start-up procedure with the aim of minimizing its fuel consumption while at the same time maximizing its electric energy output, taking into account all the thermo-mechanical constraints involved in the procedure. Heating rate constraints of the steam generator and the booster heater, and the steam turbine start-up schedule were considered. The simulation model was developed based on a power plant located near Abu Dhabi, and was validated against real operational data with a maximum integral relative deviation of 4.3{\%} for gross electric energy production. A multi-objective optimization was performed for a typical operating week during winter and spring weather conditions. The results suggest that in order to minimize the fuel consumption and at the same time maximize the electric energy production, an evaporator heating rate of 6 K/min is an optimal value both for winter and spring conditions.",
keywords = "Solar energy, Concentrating solar power, Parabolic trough power plant, Steam generator, Steam turbine, Start-up, Hybridization, Operation strategy, Flexibility, Optimization",
author = "Davide Ferruzza and Monika Topel and Bj{\"o}rn Laumert and Fredrik Haglind",
year = "2018",
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Optimal start-up operating strategies for gas-boosted parabolic trough solar power plants. / Ferruzza, Davide; Topel, Monika; Laumert, Björn; Haglind, Fredrik.

In: Solar Energy, Vol. 176, 2018, p. 589-603.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Optimal start-up operating strategies for gas-boosted parabolic trough solar power plants

AU - Ferruzza, Davide

AU - Topel, Monika

AU - Laumert, Björn

AU - Haglind, Fredrik

PY - 2018

Y1 - 2018

N2 - Concentrating solar power plants are taking an increasing share in the renewable energy generation market. Parabolic trough is one of such technologies and the most commercially mature. However, this technology still suffers from technical challenges that need to be addressed. As these power plants experience daily start-up procedures, the optimal performance in transient operation needs to be considered. This paper presents a performance based modelling tool for a gas-boosted parabolic trough power plant. The objective of the paper is to define an optimal operational strategy of the power plant start-up procedure with the aim of minimizing its fuel consumption while at the same time maximizing its electric energy output, taking into account all the thermo-mechanical constraints involved in the procedure. Heating rate constraints of the steam generator and the booster heater, and the steam turbine start-up schedule were considered. The simulation model was developed based on a power plant located near Abu Dhabi, and was validated against real operational data with a maximum integral relative deviation of 4.3% for gross electric energy production. A multi-objective optimization was performed for a typical operating week during winter and spring weather conditions. The results suggest that in order to minimize the fuel consumption and at the same time maximize the electric energy production, an evaporator heating rate of 6 K/min is an optimal value both for winter and spring conditions.

AB - Concentrating solar power plants are taking an increasing share in the renewable energy generation market. Parabolic trough is one of such technologies and the most commercially mature. However, this technology still suffers from technical challenges that need to be addressed. As these power plants experience daily start-up procedures, the optimal performance in transient operation needs to be considered. This paper presents a performance based modelling tool for a gas-boosted parabolic trough power plant. The objective of the paper is to define an optimal operational strategy of the power plant start-up procedure with the aim of minimizing its fuel consumption while at the same time maximizing its electric energy output, taking into account all the thermo-mechanical constraints involved in the procedure. Heating rate constraints of the steam generator and the booster heater, and the steam turbine start-up schedule were considered. The simulation model was developed based on a power plant located near Abu Dhabi, and was validated against real operational data with a maximum integral relative deviation of 4.3% for gross electric energy production. A multi-objective optimization was performed for a typical operating week during winter and spring weather conditions. The results suggest that in order to minimize the fuel consumption and at the same time maximize the electric energy production, an evaporator heating rate of 6 K/min is an optimal value both for winter and spring conditions.

KW - Solar energy

KW - Concentrating solar power

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KW - Steam generator

KW - Steam turbine

KW - Start-up

KW - Hybridization

KW - Operation strategy

KW - Flexibility

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