Predictable and Unpredictable Climate Variability Impacts on Optimal Renewable Energy Mixes: The Example of Spain

Maimó-Far, Aina; Tantet, Alexis; Homar, V.; Drobinski, Philippe

doi:10.3390/en13195132

Cited by 13 publications

(8 citation statements)

References 39 publications

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“…Recently, unprecedented winter storms across Texas in February 2021 caused wide-spread power outages [10]. See also Maimó-Far et al [11] for unpredictability issues around renewables. In order to guarantee a resilient grid, worst case assumptions must be taken into account.…”

Section: Background and Related Workmentioning

confidence: 99%

Evaluation of Continuous Power-Down Schemes

Andro-Vasko

Bein

2022

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We consider a power-down system with two states—“on” and “off”—and a continuous set of power states. The system has to respond to requests for service in the “on” state and, after service, the system can power off or switch to any of the intermediate power-saving states. The choice of states determines the cost to power on for subsequent requests. The protocol for requests is “online”, which means that the decision as to which intermediate state (or the off-state) the system will switch has to be made without knowledge of future requests. We model a linear and a non-linear system, and we consider different online strategies, namely piece-wise linear, logarithmic and exponential. We provide results under online competitive analysis, which have relevance for the integration of renewable energy sources into the smart grid. Our analysis shows that while piece-wise linear systems are not specific for any type of system, logarithmic strategies work well for slack systems, whereas exponential systems are better suited for busy systems.

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Section: Background and Related Workmentioning

confidence: 99%

Evaluation of Continuous Power-Down Schemes

Andro-Vasko

Bein

2022

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“…While being sub-optimal in the sense of the efficient frontier, the actual Italian energy mix (figure 5b) therefore appears to be a compromise between the 2 simulated scenarios. A detailed description of the meanvariance analysis is given in [76] with various applications in [77,78]. As reviewed by [60], to design optimal mixes while precisely accounting for the costs of energy systems with high shares of variable renewable energies, economic studies instead attempt to minimize costs or to maximize welfare, although it remains a challenge to combine the long-term investment problem with the short-term scheduling problem while taking flexibility, balancing and grid investments into account.…”

Section: Focus On the Issue Of The Variability Of The Renewable Produ...mentioning

confidence: 99%

Integration of climate variability and climate change in renewable energy planning

Drobinski

Tantet

2021

Phys. Usp.

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The trajectory outlined in the Paris Agreement to keep global warming below 2 • C dictates not only the timing but also the speed at which the transformation of our energy system must take place to decarbonize energy production. Complying with the Paris Agreement requires reducing the carbon content of energy by about 75% and therefore making a rapid transition from fossil production to production based on low-carbon technologies. Among these technologies are those based on renewable energies. The variability of the climate itself induces a fluctuating or even an intermittent production of variable renewable energy (solar, wind, marine), challenging the balance of the electricity grid. In this context, to speak of energy transition is to face the problem of increasing the penetration of low-carbon energy production while limiting the variability while ensuring socio-technical feasibility and economic viability. The problem is not simple and the delicate balance between urgency (drastic reduction in emissions) and utopia (what strategy for low carbon energies, opportunities and obstacles) needs to be clearly defined.

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“…But, wind speed at the location may be weak and need a huge construction to cover the load. Wind speed may also have unpredictable of supply during the entire year [6]. Another configuration is a marine current and solar PV hybrid system [7].…”

Section: Introductionmentioning

confidence: 99%

“…𝑡 𝑀𝐶 + 𝑃 𝑃𝑉 . 𝑡 𝑃𝑉 (6) The unit for energy produced is Watthour (Wh) or kWh. The operation time of the marine current denotes as tMC.…”

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confidence: 99%

The Design of DC Micro Grid with a Load-Based Battery Discharge Method for Remote Island Electrification Utilizes Marine Currents and Solar Photovoltaic

Faanzir

Ashari

Soedibyo

et al. 2022

KINETIK

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This paper presents the design of DC micro grid with a load-based battery discharge method for remote island electrification utilising marine currents and solar photovoltaic. To anticipate the intermittent, a load-based battery discharge method is proposed. A centralized battery storage is sized according to the unfilled load demand by the marine current and the solar PV. Thus, the length of the turbine diameter is varied to meet the optimum system size. Hourly data of marine current speed from Cipalulu Strait in Maluku, Indonesia is provided. Data at a typical time, shows that the marine current peak power occurs every 6 hours perday, whereas the PV is at noon. The loads divide into 6 categories, including household 1, household 2, villagse office, school, mosque, and public health center with the peak demand as 112 kW and 856 kWh perday. All loads, mainly for lightings and electronic equipment work in 24 V DC through converters. The distribution network employs 320 V DC connecting from the power plan to the community residents. Simulations demonstrate that the battery size, solar PV, and turbine radius matches to meet the loads. Simulations also show that the battery utilization meets its current and capacity, meaning that an optimum size and filling the load profile can be smoothly conducted.

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Predictable and Unpredictable Climate Variability Impacts on Optimal Renewable Energy Mixes: The Example of Spain

Cited by 13 publications

References 39 publications

Evaluation of Continuous Power-Down Schemes

Evaluation of Continuous Power-Down Schemes

Integration of climate variability and climate change in renewable energy planning

The Design of DC Micro Grid with a Load-Based Battery Discharge Method for Remote Island Electrification Utilizes Marine Currents and Solar Photovoltaic

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