Optimal offering strategy for a concentrating solar power plant

Domínguez, Ruth; Baringo, Luis; Conejo, Antonio J.

doi:10.1016/j.apenergy.2012.03.043

Cited by 134 publications

(99 citation statements)

References 20 publications

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“…Hence, thermal energy storage systems can be considered a key aspect for CSP plants due to their ability of extending solar power production beyond periods of no solar radiation reducing the mismatch between solar energy and demand. Examples of how to take advantage of this technology when operating solar plants can be found in [1,2,3].…”

Section: Introductionmentioning

confidence: 99%

Modular object-oriented methodology for the resolution of molten salt storage tanks for CSP plants

et al. 2013

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Two-tank molten salt storages are the most widespread thermal energy storage technology within concentrated solar power plants. In spite of this, there are design aspects such as thermal losses control, optimisation of the storage or how these devices scale up with the increase in power capacity of the plant which still should be considered. In this sense, numerical modelling of these systems can be a powerful tool for reducing their cost. The present work aims at modelling molten salt tanks by proposing a parallel modular object-oriented methodology which considers the different elements of the storage (e.g. tank walls, insulation material, tank foundation, molten salt storage media, etc.) as independent systems. Each of these elements can be solved independently and using different levels of modelling (from global to fully three-dimensional models), while at the same time they are to linked each other through their boundary conditions. The mathematical models used, together with some illustrative examples of the application of the proposed methodology, are presented and discussed in detail. Keywords

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Section: Introductionmentioning

confidence: 99%

Modular object-oriented methodology for the resolution of molten salt storage tanks for CSP plants

et al. 2013

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“…The parasitic power is assumed constant. In constraints (12) and (13), the electric power from the SF and TES is considered dependent on the efficiencies associated with the thermal power of the SF and the storage power, respectively. In constraint (14), the bounds for the sum of the power from the SF and TES are set.…”

Section: Operational Constraints Of Csp Plantsmentioning

confidence: 99%

“…A CSP plant advantages from having non-expensive TES, allowing dispatchability. TES allows: offsetting generation deficits due to insufficient solar irradiation; shifting power towards suitable periods [12]; reducing real-time net power variability and peak shaving; reducing high marginal cost units due to unpredicted drop in renewable energy [13]; providing ancillary services. Studies on the operation of CSP plant having TES have reported that a CSP producer may earn more profits in the day-ahead market [11,13] and benefits may be expected for the power systems reliability [14].…”

Section: Introductionmentioning

confidence: 99%

Wind-CSP short-term coordination by MILP approach

Pousinho

Silva

Mendes

et al. 2014

3rd Renewable Power Generation Conference (RPG 2014)

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This paper is on the maximization of total profit in a dayahead market for a price-taker producer needing a short-term scheduling for wind power plants coordination with concentrated solar power plants, having thermal energy storage systems. The optimization approach proposed for the maximization of profit is a mixed-integer linear programming problem. The approach considers not only transmission grid constraints, but also technical operating constraints on both wind and concentrated solar power plants. Then, an improved short-term scheduling coordination is provided due to the more accurate modelling presented in this paper. Computer simulation results based on data for the Iberian wind and concentrated solar power plants illustrate the coordination benefits and show the effectiveness of the approach.

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“…This was recognised by Dominguez et al (2012) noted, in a Spanish context, who noted that molten salt storage has the potential to improve the economics of a large-scale concentrating power plant. The economics of large-scale hydro has similarly benefitted through pump storage, whereby water is pumped uphill to a catchment area to be later released, to flow through hydroturbines at times of high electricity prices (PIN, 2013;IEA, 2014a).…”

Section: The Improving Economics Of Energy Storagementioning

confidence: 98%

Cost-effectiveness of renewable energy subsidies in reducing greenhouse gas emissions in Australia

Burtt¹

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The main focus of this thesis is an assessment of the cost-effectiveness of subsidies paid by electricity consumers to support the uptake of household photovoltaic (PV) in Australia, modelled over the period 2006 to 2014. This modelling is a component of a larger 20 year model, of small and large-scale renewable energy, developed to enable sensitivity analyses and policy scenarios to be undertaken of the effectiveness of renewable energy subsidies. In Australia subsidies are funded mostly by electricity consumers although there are some state and Commonwealth grants. Costs and revenues have been determined for each type of renewable energy over the period from 2000 to 2020 and converted to payback periods. For household PV, annual payback periods are regressed against the uptake of PV over the years 2006 to 2014 with sensitivity analyses run on input variables. The extent to which renewable energy has replaced coal and gas-fired energy is assessed to estimate the reduction in greenhouse gas emissions. The relationship of subsidies to emission reductions appears to be the first analysis of this kind in Australia.Household PV sensitivity analysis revealed that the declining cost of PV panels had most impact on PV uptake followed by feed-in tariffs (FITs), renewable energy credits and increasing household electricity tariffs. Modelling suggests that FITs were higher than necessary to achieve the resultant levels of household PV uptake and that the low cost of PV panels and comparatively high electricity tariffs are likely to result in a continuing strong uptake of household PV in Australia.Household PV subsidies peaked in 2011 and 2012, with payback periods falling to three to four years, having since increased to five to six years. Emission reduction costs are expected to reduce Modelling suggested that in 2014 retail electricity prices would have been 12 % lower without subsidy payments and a further 14 % lower if network costs had increased at the same rate as other electricity cost components. The latter highlights the substantial increase in network charges which were argued were necessary "to keep the lights on", which assisted in reducing emissions through reduced electricity consumption.The model was extended to analyse the responsiveness of consumers to increasingly higher electricity prices, producing a price elasticity of demand for electricity in Australia over the period FY 2008 to FY 2015 of -0.4, being in line with other research. This means that consumer subsidies not only stimulated renewable energy output but, through higher retail electricity prices have also contributed towards emission reductions through reducing electricity consumption.The analysis was extended to include the economics of battery storage associated with household PV, considered appropriate because of the decline in battery costs, and the forthcoming termination of high FITs. Together they are expected to make battery storage a viable option for many households in Australia in the near future. Battery payback periods ar...

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Optimal offering strategy for a concentrating solar power plant

Cited by 134 publications

References 20 publications

Modular object-oriented methodology for the resolution of molten salt storage tanks for CSP plants

Modular object-oriented methodology for the resolution of molten salt storage tanks for CSP plants

Wind-CSP short-term coordination by MILP approach

Cost-effectiveness of renewable energy subsidies in reducing greenhouse gas emissions in Australia

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