Showing results for: hydro turbine Articles
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Kelag demonstrates hydro power know-how in Bosnia-Herzegovina
Austrian energy companies are increasingly helping to expand the hydro power capacities in the Balkans. On the River Ugar, which today marks the border between the Federation of Bosnia-Herzegovina and the Republic of Srpska, the Novakovici runof- river power plant has been delivered by a subsidiary of the Carinthian utility company Kelag, InterEnergo. In a normal year, the high-pressure plant, ...
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Modelling of the hydro-generator local network operation and load disturbance rejection
The paper describes models of the local network operation of the hydraulic turbine-generator unit. Two different models are proposed. They describe the dynamic behaviour of a system in which the unit is connected to an equivalent system. A nonlinear model of the interconnection to an equivalent power system is considered. An optimal controller for load disturbance rejection in water turbine speed ...
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VSC with a T-connected transformer-based electronic load controller for an isolated asynchronous generator feeding three-phase four-wire loads in a micro hydro system
This paper deals with a novel solid state controller (NSSC) for isolated asynchronous generator (IAG) feeding three-phase four-wire loads driven by constant power prime movers, such as uncontrolled micro hydro turbines. AC capacitor banks are used to meet the reactive power requirement of the asynchronous generator. The proposed NSSC is realised using a set of IGBTs (insulated gate bipolar ...
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Multi-criterion optimization of energy management in drinking systems
In this study, two different energy sources that are connected to a pumped storage water supply system are analyzed: a water and a wind turbine. A water turbine can be integrated in a water supply system in high-pressure locations. Recently, new sources of energy production are being researched and applied due to the increase in the price of conventional energy sources and concerns regarding the ...
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Microhydro-Electric Systems Simplified
If you have a suitable site, harnessing the energy in a stream or creek can be the most cost-effective way to make renewable electricity. Compared to the sun and wind’s variability, a stream’s flow is relatively consistent, making microhydro-electric system output the most predictable of all the renewable energy (RE) electrical systems. Hydro resources are also the most site specific, ...
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A Review of Cavitation-Erosion Resistant Weld Surfacing Alloys for Hydroturbines
AbstractAn improved weld surfacing alloy has been developed and tested to resist cavitation-erosion in hydroturbines. Typical wear characteristics experienced in laboratory testing has been correlated to actual service conditions. A metallurgical evaluation shows that a high strain, work hardening austenitic stainless steel produces superior resistance to cavitational erosion. Several industrial ...
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Powering Existing Control Dams - Case Study
There are thousands of non-powered dams in the United States and Canada, either for flood control, water level control, or even recreational purposes. Ossberger Hydro has different turbine configurations that help to minimize the civil work related to the turbine implementation on these existing dams and also provide the operation flexibility of managing high water level and low flow ...
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Control of dynamic effects in small hydro with long hydraulic circuits
Lab tests in a long hydraulic circuit were developed to analyse hydrotransients induced by waterhammer effects under runaway conditions. The definition of suitable design criteria in hydraulic systems is of utmost importance and has become a priority for good design implementation. The dynamic behaviour of turbo-generators of small reaction turbines and the interaction with long hydraulic ...
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Micro Hydro Systems A basic overview of a hydro system with components explained
If you have a suitable site, harnessing the energy in a stream or creek can be the most cost-effective way to make renewable electricity. Compared to the sun and wind’s variability, a stream’s flow is relatively consistent, making microhydro-electric system output the most predictable of all the renewable energy (RE) electrical systems. Hydro resources are also the most site specific, ...
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A new design of a highly efficient hydraulic turbine on the basis of the specific hydrodynamic effect
Traditional free flow turbines slow down water stream using its kinetic energy. This article describes a method for deriving energy from a free water stream using a unique hydraulic turbine which unlike traditional hydraulic turbines speeds up the water stream using potential energy thanks to a specific hydraulic effect. The article also describes a method of mathematic calculations of output ...
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A novel technique proposed for automatic control of small hydro power plants
A new scheme is proposed for the speed control of hydro turbines. Power can be controlled by controlling the rotary motion of the spear valve or linear motion of the sluice gate. In this paper, necessity for speed control, various function of governors, types, speed regulation of micro-hydroelectric power plants, functional block diagram of power generation and control system general models for ...
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Water Line Project - Holloway Bar Placer Mine (archived)
One of the biggest problems with living in a remote area is access to facilities that we take for granted. If you want to watch TV, you need both a satellite dish and power to run the dish and TV. If you want to have a shower, you'll need some way to pump the water as well as heat it. If you want to cook some ham and eggs, you'll need to find a way to keep the food cool, or it'll turn into Dr. ...
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Energy recovery potential using micro hydropower in water supply networks in the UK and Ireland
The supply and treatment of water is a highly energy intensive process, resulting in large amounts of greenhouse gas emissions as well as incurring large economic costs. Both governments and water service providers worldwide recognise the need for more sustainable water supply systems. In recent years, the use of hydropower turbines within water supply networks has been shown as a viable option ...
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How big is the distributed energy opportunity for water and wastewater utilities?
Energy costs for water utilities are large, and growing Energy is a significant cost for many water utilities, and costs are growing as more energy-intensive forms of water supply, including desalination, are being used. Energy is typically the second-largest utility budget item in developed countries, after labour. In many developing countries, energy can account for 70% or even more, of annual ...
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Usages of free-flow hydraulic turbines and boosting their energy efficiency
The article analyses engineering solutions of free-flow hydraulic turbines and ways of making them more energy efficient through application of the hydrodynamic effect of boosting the flow power. Keywords: energy; energy efficiency; capacity; power; turbine; free-flow; flow; water wheel; depth; hydrodynamic; effect; feedback; hydraulic jump MAIN PART INTRODUCTION The issue of using energy ...
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Power control strategy for grid connected permanent magnet synchronous generator of a distributed generation unit
This paper describes the studies on the operation and control of a variable speed wave energy conversion system. The wave energy conversion system considered is oscillating–water–column (OWC) based Wells turbine driven permanent magnet synchronous generator connected to the grid by means of fully controlled frequency converter. In such systems primary aim is to achieve a low distortion, high ...
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IAEA's DEEP in Carlsbad: co-producing energy and water in Southern California
The joint production of energy and desalinated water is examined in the context of the construction of a Reverse Osmosis (RO) plant at the site of the (fossil-fired) Encina Power Station in Carlsbad, California. The first part of the paper reproduces cost estimates of water at the Carlsbad Desalination Project. The second part of the paper reproduces these cost estimates using the International ...
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S.I.C.A.E of Precy - Precy Sait Martin, France - Case Study
The work decomposed into several phases: Optimisation of turbines installed in 1926 in right bank to reach 420 kW. Change of regulating system for the power and the water level. Installation of a supplementary turbine of 80 KW power in left ...
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Water sustainability decision-making for electric utilities case study
The electric power generation sector uses approximately 41% of all freshwater withdrawn in the United States—more than any other water use sector. The Electric Power Research Institute (EPRI) conducts research and development to help address challenges in electricity generation, delivery, and use, including water sustainability issues. On behalf of EPRI, LimnoTech conducted research and is ...
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Palmdale Water District Wind Turbine Project
In response to the 2001 California energy crisis, Black & Veatch acted as the owner's engineer through the construction and commissioning phases of the largest net-metered wind energy project in the United States. The California energy crisis in 2001 made headlines around the world. The country's most populous state was caught in a power delivery squeeze and was beset with runaway ...
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