hydropower generation Articles
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Extended multi-objective firefly algorithm for hydropower energy generation
Classical methods have severe limitations (such as being trapped in local optima, and the curse of dimensionality) to solve optimization problems. Evolutionary or meta-heuristic algorithms are currently favored as the tools of choice for tackling such complex non-linear reservoir operations. This paper evaluates the performance of an extended multi-objective developed firefly algorithm ...
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Long-term variations in the net inflow record for Lake Malawi
Lake Malawi is the third largest lake in Africa and plays an important role in water supply, hydropower generation, agriculture and fisheries in the region. Lake level observations started in the 1890s and anecdotal evidence of variations dates back to the early 1800s. A chronology of lake level and outflow variations is presented together with updated estimates for the net inflow to the ...
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Optimizing multi-reservoir operation rules: an improved HBMO approach
We present an improved version of Honey Bees Mating Optimization (HBMO) algorithm to develop operating rules for multi-reservoir systems. The performance of the proposed model is tested through sensitivity analysis and comparing the result with those of a real-coded Genetic Algorithm (GA) for a 60-month period single-reservoir operation problem. The improved model is subsequently employed to ...
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Developing reservoir operational decision rule by genetic programming
The reservoir operational decision rule is an equation that can balance reservoir system parameters in each period by considering previous experiences of the system. That equation includes variables such as inflow, volume storage and released water from the reservoir that are commonly related to each other by some constant coefficients in predefined linear and nonlinear patterns. Although ...
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Coal Prices held back for power producers in China
China requests that coal miners not raise prices Higher coal prices would increase price of inflation on all things in China, so the Govt. has asked that the Coal Companies keep prices from rising too much… The prices for coal set by annual supply contracts cannot be changed. All of the state run coal mine operators and coal industry leaders will work together coal prices steady. The ...
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The potential impacts of climate change on hydropower generation in Mid Wales
Hydropower is a potential large source of electricity supply in Wales. The Upper River Severn in Mid Wales is a typical stream where a high head hydropower scheme could be developed and the river system at Plynlimon has some of the longest records for weather and flow in Wales. A micro-hydropower potential of 99 kW is demonstrated at Plynlimon and the potential impacts of climate change are ...
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Control systems for small hydropower plants: a review
Hydropower is emerging as a major contributor to world energy requirement. It is inexhaustible, clean and has many other benefits like flood mitigation, water supply, irrigation, etc. However, large-scale hydropower generation suffers from inherent disadvantages, such as massive financial outlays, long gestation periods, geological surprises, environmental factors and rehabilitation of the ...
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The impacts of technological learning on the optimum technology mix: simulations for the Indian power sector
For the investigation of the optimum technology mix of any country, which is clearly an issue of dynamic nature, technological learning and economies of scale play a significant role. Hence, in this paper's long term planning exercise for the Indian power sector (2000-2025), our simulation analysis specifically includes the impacts of technological learning on the optimal inter-temporal choice of ...
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Anti-islanding protection and islanding operation of grid-connected hydropower distributed generation
Salient issues associated with the connection of hydropower distributed generation (HPDG) into distribution networks include operation and voltage regulation, grid connection and control interaction, anti-islanding protection and islanding operation, and operation of protective devices. Better understanding of these issues and finding solutions to these problems are timely and important to the ...
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An assessment of reservoir filling policies for the Grand Ethiopian Renaissance Dam
Africa's largest hydropower facility is currently under construction on the main stem of the Blue Nile River in Ethiopia. The Grand Ethiopian Renaissance Dam (GERD) is poised to facilitate regional development with a 63 billion cubic meter reservoir and 6,000 MW of power generating capacity. To date, however, no reservoir filling rate policy has been established. This policy will have ...
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Power estimation and reliability evaluation of municipal waste water and self–excited induction generator–based micro hydropower generation system
This paper presents power estimation and reliability evaluation of the micro hydro power generation system based on municipal waste water. Self–excited induction generator was used in the developed power plant, situated at IIT (BHU) campus, Varanasi, India. The hydro potential of the waste water flowing through sewage system of the Banaras Hindu University has been determined for annual flow ...
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Data Highlight: Hydropower Continues Steady Growth
World hydroelectric power generation has risen steadily by an average 3 percent annually since 1965. In 2011, at 3,500 billion kilowatt-hours, hydroelectricity accounted for roughly 16 percent of global electricity generation, almost all produced by the world’s 45,000-plus large dams. Graph on World Hydroelectric Generation, 1965-2011 Four countries dominate the hydropower landscape: ...
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Project - 1 MW, NC
Year: 2021 Running Gear: 2 Vertical shaft Francis turbines with synchronous generators Scope: Replacement of control system, exciters, and HPUs Originally part of a large cotton mill complex in North Carolina dating back to the 1800s, this 1 MW hydropower plant stayed in operation into the 2000s, longer than the rest of the declining mill town. The cotton mill itself finally shut down in ...
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Full-energy-chain greenhouse-gas emissions: a comparison between nuclear power, hydropower, solar power and wind power
Fair comparison of the climate impacts from different energy sources can be made only by accounting for the emissions of all relevant greenhouse gases (GHGs) from the full energy chain (FENCH) of the energy sources. FENCH-GHG emission factors of most of the non-fossil fuel energies are lower than those of the fossil fuels that are in the range of 500-1200 g CO2/kW h(e). The improvement rates ...
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How to plan hydropower stations for the future
The hydropower plants of tomorrow won’t only produce energy. Constructing dams will also provide new drinking water sources, irrigation for crops, and new waterways for transport. In the words of most of the scientists here at World Water Week in Stockholm, Sweden, they will be ‘multipurpose’. This means that each plant design will be a one-off. And, more importantly, each will ...
By SciDev.Net
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A method for the study of cascading effects within lifeline networks
The following research is in keeping with the current international and national trend to establish effective facility management plans, based on antagonistic notions of maximal production and minimal risks. The application of this approach to lifeline networks is complex, considering that the failure of these networks can cause extensive consequences for populations and upon socio-economic ...
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Carbon tax and energy resource in Indian power sector
Abstract: Global warming is a universal problem nowadays. The recent United Nations Climate Change Conference in Copenhagen was partially successful because all participating countries realised the damages caused by greenhouse gas (GHG) emissions and promise to mitigate in the future course of time. India has also promised to reduce 20% to 25% of these emissions up to the year 2020. To implement ...
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In Perspective: Launching a third industrial revolution
A third industrial revolution based on new communication and energy technologies needs strong political commitments, argues David Dickson. Just before Christmas, China's official Xinhua News Agency published an article extolling the virtues of the country's incoming premier, Li Keqiang, and describing his enthusiasm for ideas that the iconoclastic US commentator Jeremy Rifkin put forward in ...
By SciDev.Net
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Curtis hydro redevelopment - Case study
The Curtis Palmer hydro facility consists of two run-of-river hydroelectric generating stations located on the Hudson River, in Corynth, NY. In 2014, CHC provided two 2250 mm vertical axial flow Kaplan open flume turbines to replace two of the five horizontal units located in the Curtis powerhouse, which were running but in poor mechanical condition. The existing generators were removed, ...
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Africa`s Hydropower Future
A gradual process of development has started yielding results for African hydropower, with a swathe of international hydro and associated power export projects under way or planned. It seems that Africa is becoming a more attractive place to invest in infrastructure development, but what has changed? It is well known that Africa has an abundance of hydropower resources, but it remains in ...
By HydroBox NV
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