Impact of start-up mode on flexible power plant operation and system cost

Hermans, Mathias; Delarue, Erik

doi:10.1109/eem.2016.7521298

Cited by 11 publications

(5 citation statements)

References 8 publications

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“…Considering the high penetration of RES that is expected in the coming years, the impact of start-ups on the final costs will consistently increase. Increasing the cycle frequency of conventional fossil fuel power plants to provide flexibility will have both short-and long-term repercussions on plant costs, ultimately increasing the costs of generation technologies [39]. While modelling, ramping up and down costs were considered jointly since, from a mathematical standpoint, the differentiation would not affect the results.…”

Section: S Contentmentioning

confidence: 99%

Planning the deployment of energy storage systems to integrate high shares of renewables: The Spain case study

Auguadra

Ribó-Pérez

Gómez‐Navarro

2023

Energy

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Section: S Contentmentioning

confidence: 99%

Planning the deployment of energy storage systems to integrate high shares of renewables: The Spain case study

Auguadra

Ribó-Pérez

Gómez‐Navarro

2023

Energy

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“…In turn, the current trends of renewable-energy-sources penetration in modern power systems point out an increment in the amount of start-up and shut-down processes accounted by thermal generators [149]. These ongoing changes highlight the necessity of extending the horizon of the UC problem [150] for considering medium-term technical constraints, such as maintenance schedule [151]. This could be achieved through clustering techniques such as [152].…”

Section: Trends In Computational Efficiency To Solve the Unit Commitm...mentioning

confidence: 99%

A Review on the Unit Commitment Problem: Approaches, Techniques, and Resolution Methods

Montero

Bello

2022

Energies

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Optimizing the schedule of thermal generators is probably the most important task when the operation of power systems is managed. This issue is known as the unit commitment problem in operational research. It has been profoundly studied in the literature, where several techniques have been proposed to address a computationally tractable solution. In turn, the ongoing changes of paradigms in energy markets focus the attention on the unit commitment problem as a powerful tool to handle new trends, such as the high renewable energy sources penetration or widespread use of non-conventional energy-storage technologies. A review on the unit commitment problem is propo- sed in this paper. The easy understanding of the diverse techniques applied in the literature for new researchers is the main goal of this state-of-art as well as identifying the research gaps that could be susceptible to further developments. Moreover, an overview of the evolution of the Mixed Integer Linear Programming formulation regarding the improvements of commercial solvers is presented, according to its prevailing hegemony when the unit commitment problem is addressed. Finally, an accurate analysis of modeling detail, power system representation, and computational performance of the case studies is presented. This characterization entails a significant development against the conventional reviews, which only offer a broad vision of the modeling scope of their citations at most.

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“…The authors cite a wide variety of cost-related implications of flexible operation available in literature. Hermans et al (2016), opine that cycling of thermal plants is increasing with an increase in unpredictable renewable energy sources (RES). However, such cyclic operation of thermal power comes at a cost.…”

Section: Literature Reviewmentioning

confidence: 99%

Falling Utilization Factor of Thermal Power Plants in India and Its Financial Impact

Tripathi¹,

Anand

2022

IJEEP

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Thermal power plants in India are operating under very low Utilization Factors. The average national Utilization Factor of coal based thermal power plants was 77.5 % % in 2009-10 which has come down to 53.37 % in 2021-22. Many studies and reports indicate that, in the business-as-usual situation, average Utilization Factor may drop to 40% in next 2-3 years. This situation has arisen partly because of substantial injection of renewable energy in the grid. Since the renewable energy provides intermittent supply, thermal plants have to dance to the tune of renewable energy in order to sustain the grid stability. These thermal plants have to therefore ramp-up and ramp-down load several times a day. It is one of the major causes for overall low Utilization Factor. The situation is now putting immense technical and financial pressure on the thermal plants. Regulators, policy makers, power plant developers, lenders and other key stakeholders need to take notice of it. In this paper, we explore the direct financial impact on the Profits / Return on Equity (ROE) of thermal power plants under these circumstances. We find that under the regulated tariff regime, thermal power plants may see a reduction in Return on Equity (ROE) to the tune of 26 % if average Utilization Factor drops from a level of 90 % to 35 %.

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Impact of start-up mode on flexible power plant operation and system cost

Cited by 11 publications

References 8 publications

Planning the deployment of energy storage systems to integrate high shares of renewables: The Spain case study

Planning the deployment of energy storage systems to integrate high shares of renewables: The Spain case study

A Review on the Unit Commitment Problem: Approaches, Techniques, and Resolution Methods

Falling Utilization Factor of Thermal Power Plants in India and Its Financial Impact

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