Tidal range technologies and state of the art in review

Waters, Shaun; Aggidis, George A.

doi:10.1016/j.rser.2015.12.347

Cited by 108 publications

(68 citation statements)

References 42 publications

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“…Bulb turbines are known for its high efficiency in energy generation (e.g., more than 90%, Andre, ), which can be reached over a wide range of flow and head water characteristics through the use of adjustable guide vanes and runner blades (Waters & Aggidis, ). As a consequence, run‐of‐river dams can be built with the river maintaining free‐flowing sections, which is nearly impossible in dams with large accumulation reservoirs.…”

Section: Methodsmentioning

confidence: 99%

Temporal fish community responses to two cascade run‐of‐river dams in the Madeira River, Amazon basin

et al. 2017

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We examined responses from shore fish assemblages and bottom channel fish assemblages before and after 2 cascade run‐of‐river dams in the Madeira River, in the Amazon. Those dams were installed in a river corridor where historical factors, represented by the presence of the Teotônio and Jirau falls, were the best predictors of the fish fauna assemblage composition. Jirau and Santo Antônio were the first dams constructed with Kaplan horizontal bulb turbines in the Amazon. These bulb turbines have the ability to operate by forming small reservoirs known as run‐of‐river, which should minimize impacts on fish assemblages. Overall, there were major short‐term impacts in shore fish assemblages by increasing species richness, abundance, and biomass in experimental catches. Shore fish assemblages dissimilarities before and after the dams' closure were also noticed and were related to an increase in water temperature and dissolved oxygen. However, the historical factor represented by Teotônio Fall is still the best predictor of fish assemblage dissimilarities, combined with effects of dams' closure. Bottom channel fish assemblage dissimilarities can be explained only by dams closure and are related especially to changes in fish species abundance inside the reservoirs. Our study revealed an increase in native opportunistic fish species and changes in fish assemblage structure at local scale. Kaplan horizontal bulb turbines employed in run‐of‐river dams seem to be less deleterious than vertical axis turbines typically used in accumulation reservoirs, and should be preferred in the face of burgeoning new hydroelectricity development plans for rivers across the Amazon basin.

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Section: Methodsmentioning

confidence: 99%

Temporal fish community responses to two cascade run‐of‐river dams in the Madeira River, Amazon basin

et al. 2017

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“…Existing and prospective tidal range projects essentially constitute impoundments either in the form of barrages that span an entire estuarine basin [1,2], or as coastal lagoons positioned against coastlines [3]. These impoundments are designed to facilitate a potential head difference through the carefully orchestrated operation of sluice gates and hydro-turbines, with the latter converting potential energy into electricity.…”

Section: Introductionmentioning

confidence: 99%

Optimising tidal range power plant operation

Angeloudis¹,

Kramer²,

Avdis³

et al. 2017

Preprint

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• We describe numerical methods to simulate the operation of tidal range power plants.• We couple simplified power plant operation models with gradient-based optimisation algorithms.• The consideration of a flexible operation with pumping is shown to have the potential to deliver significant energy gains.• Optimisation of larger plant designs should be coupled with hydrodynamics solvers. A R T I C L E I N F OKeywords: Tidal range energy Tidal lagoon Marine energy Resource assessment Control optimisation Gradient-based optimisation A B S T R A C T Tidal range power plants represent an attractive approach for the large-scale generation of electricity from the marine environment. Even though the tides and by extension the available energy resource are predictable, they are also variable in time. This variability poses a challenge regarding the optimal transient control of power plants. We consider simulation methods which include the main modes of operation of tidal power plants, along with algorithms to regulate the timing of these. This paper proposes a framework where simplified power plant operation models are coupled with gradient-based optimisation techniques to determine the optimal control strategy over multiple tidal cycles. The optimisation results inform coastal ocean simulations that include tidal power plants to gauge whether the benefits of an adaptive operation are preserved once their hydrodynamic impacts are also taken into consideration. The combined operation of two prospective tidal lagoon projects within the Bristol Channel and the Severn Estuary is used as an example to demonstrate the potential benefits of an energy maximisation optimisation approach. For the case studies considered, the inclusion of pumping and an adaptive operation is shown to deliver an overall increase in energy output of 20-40% compared to a conventional two-way uniform operation. The findings also demonstrate that smaller schemes stand to gain more from operational optimisation compared to designs of a larger scale.

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“…To date, many tidal power stations have been built and more projects have been scheduled. Detailed projects information summary can be found in references …”

Section: Mre Generationmentioning

confidence: 99%

“…Thus, the double‐basin scheme and the pumping mode can also be treated as a manner of energy storage. Further details concerning tidal range energy generation can be found in Waters and Aggidis' comprehensive review article Marine current energyThe principle of exploiting marine current energy is in many ways analogous to wind energy.…”

Section: Mre Generationmentioning

confidence: 99%

A review of marine renewable energy storage

et al. 2019

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Summary Marine renewable energies are promising enablers of a cleaner energy future. Some technologies, like wind, are maturing and have already achieved commercial success. Similar to their terrestrial counterparts, marine renewable energy systems require energy storage capabilities to achieve the flexibility of the 21st century grid demand. The unique difficulties imposed by a harsh marine environment challenge the unencumbered rise of marine renewable energy generation and storage systems. In this study, the fundamentals of marine renewable energy generation technologies are briefed. A comprehensive review and comparison of state‐of‐the‐art novel marine renewable energy storage technologies, including pumped hydro storage (PHS), compressed air energy storage (CAES), battery energy storage (BES), hydrogen energy storage (HES), gravity energy storage (GES), and buoyancy energy storage (ByES), are conducted. The pros and cons, and potential applications, of various marine renewable energy storage technologies are also compiled. Finally, several future trends of marine renewable energy storage technologies are connoted.

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Tidal range technologies and state of the art in review

Cited by 108 publications

References 42 publications

Temporal fish community responses to two cascade run‐of‐river dams in the Madeira River, Amazon basin

Temporal fish community responses to two cascade run‐of‐river dams in the Madeira River, Amazon basin

Optimising tidal range power plant operation

A review of marine renewable energy storage

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