1,006 research outputs found

    Optimal price-based scheduling of a pumped-storage hydropower plant considering environmental constraints

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    Modeling water resources management at the basin level: review and future directions

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    Water quality / Water resources development / Agricultural production / River basin development / Mathematical models / Simulation models / Water allocation / Policy / Economic aspects / Hydrology / Reservoir operation / Groundwater management / Drainage / Conjunctive use / Surface water / GIS / Decision support systems / Optimization methods / Water supply

    The Economics and Governance of Multipurpose Hydropower Reservoirs

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    Hydropower reservoirs can provide a range of energy and water services. Proponents of multipurpose reservoirs as a climate change and water security 'solution' often neglect an important detail: the technical capacity for infrastructure to provide water services and social benefits is a necessary but not sufficient condition for their actual provision. Multipurpose operations constrain electricity generation and hydropower companies' revenues. The opportunity costs of providing non-energy services are changing under the global transition to renewable energy systems. The value of water services shifts as water demand and supply change under short-term shocks, such as extreme weather events, and long-term trends, such as climate change and population growth. Under dynamic risks and trade-offs, profit-motivated hydropower companies do not have the discretion nor information to efficiently and equitably provide water services. The potential social benefits of multipurpose hydropower operations are not automatic; they need to be secured through flexible regulation and economic incentives. This thesis considers the governance of multipurpose hydropower reservoirs and the dynamic trade-offs between the profits of hydropower companies and the welfare of water users. First, I review existing hydropower governance instruments to propose three reforms: (1) period relicensing of reservoir operations, (2) pricing water services to reflect the value of foregone hydroelectricity generation, and (3) climate/green performance bonds with a conditional interest rate. Second, I consider how economic and institutional analyses could be incorporated into the governance of water systems under complex risks. Insights are drawn from a participatory risk assessment process in Vietnam where local government officials are piloting irrigation water pricing reforms. Third, I use hydro-economic modelling of a multipurpose reservoir in Tasmania, Australia to examine the conditions under which irrigation water pricing could be an appropriate reform in other locations. Finally, I consider a major practical barrier to pricing water services from hydropower reservoirs: the transmission of price spikes in electricity markets to water prices. I estimate the cost of price stability controls by modelling an alternative water tariff which incorporates the intertemporal opportunity costs of irrigation water extractions. I conclude by outlining future research on regulating hydropower reservoirs to support the resilience of social-ecological systems to water insecurity

    Advances in Theoretical and Computational Energy Optimization Processes

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    The paradigm in the design of all human activity that requires energy for its development must change from the past. We must change the processes of product manufacturing and functional services. This is necessary in order to mitigate the ecological footprint of man on the Earth, which cannot be considered as a resource with infinite capacities. To do this, every single process must be analyzed and modified, with the aim of decarbonising each production sector. This collection of articles has been assembled to provide ideas and new broad-spectrum contributions for these purposes

    Modeling and Optimal Operation of Hydraulic, Wind and Photovoltaic Power Generation Systems

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    The transition to 100% renewable energy in the future is one of the most important ways of achieving "carbon peaking and carbon neutrality" and of reducing the adverse effects of climate change. In this process, the safe, stable and economical operation of renewable energy generation systems, represented by hydro-, wind and solar power, is particularly important, and has naturally become a key concern for researchers and engineers. Therefore, this book focuses on the fundamental and applied research on the modeling, control, monitoring and diagnosis of renewable energy generation systems, especially hydropower energy systems, and aims to provide some theoretical reference for researchers, power generation departments or government agencies

    USCID water management conference

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    Presented at Emerging challenges and opportunities for irrigation managers: energy, efficiency and infrastructure: a USCID water management conference held on April 26-29, 2011 in Albuquerque, New Mexico.Includes bibliographical references.Verifying conservation estimates for on-farm agricultural water conservation programs -- Improving irrigation system performance in the Middle Rio Grande through scheduled water delivery -- Urbanization of irrigation districts in the Texas Rio Grande River Basin -- Urbanization issues in the Middle Rio Grande Conservancy District -- From canyons to canals: applying regulated river research to canal bank analysis -- Water for irrigation, streams and economy: evaluating past and future climate change to secure a reliable water supply for multiple needs -- Flow measurement capabilities of diversion works in the Rio Grande Project area -- Open-channel and pipe flow measurement at Mohave Valley Irrigation and Drainage District using Venturi technology with bubbler sensors -- Using an ADCP to determine canal seepage losses in the Middle Rio Grande Conservancy District -- Venturi meters constructed with pipe fittings: an under-appreciated option for measuring agricultural water -- Improving crop water use determination using adjusted eddy covariance heat fluxes -- Performance evaluation of TDT soil water content and Watermark soil water potential sensors -- Meeting water challenges in Idaho through water banking -- Water transfers in California: 20 years of progress, view to the future

    Managing climate risk in water supply systems : materials and tools designed to empower technical professionals to better understand key issues

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    This manual has been developed as a learning tool to be used with a companion series of practical exercises. They have been developed to provide a hands-on approach to learning key concepts in hydrology and climate science as they relate to climate risk management in water supply systems, as introduced in the text

    Wind power

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