hydropower turbine Articles
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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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Hydropower installation
DSEP100 Mains Decoupling Relays for hydropower projects in remote locations in the Cumbrian Lake District, UK. Old decommissioned water wheels in Ambleside, Blencathra and Langdale have been recently refurbished and brought back into use as sophisticated hydropower turbines which are now working in parallel with the grid, supplementing the local electricity supply. The DSEP100 ...
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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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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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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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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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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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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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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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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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Siemens Gamesa buys 8.9 GW of Senvion service contracts; Norway to build floating wind farm at oil platform
Siemens Gamesa expands services portfolio to 69 GW with Senvion deal Siemens Gamesa has agreed to buy 8.9 GW of service contracts from embattled turbine supplier Senvion as well as the German group's onshore blade manufacturing plant in Portugal, the companies announced October 21. The 200 million-euro ($222.8 million) deal will expand Siemens Gamesa's operations and maintenance (O&M) ...
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Hydro power myths Explains why various schemes such as a pool pumps or rain gutters or pumping water to a tank will not work
Making electricity from falling water can seem like magic, and that’s led to lots of misconceptions. Here, we’ll separate fact from fiction when it comes to what microhydro systems can and cannot do. Residential-scale microhydro-electric systems have the reputation of being the holy grail of home renewableenergy (RE) systems. While they lack some of the hype, magic, and bling of ...
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Microhydro Myths & Misconceptions
Residential-scale microhydro-electric systems have the reputation of being the holy grail of home renewable-energy (RE) systems. While they lack some of the hype, magic, and bling of solar-electric (photovoltaic) systems, microhydro systems are a simple technology that most people can understand...at least in general. In this article, we'll look at some common microhydro system misconceptions, ...
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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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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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Two proposals for unlimited fresh water
The world water crisis may be more serious than generally appreciated. One reason for this is that the main response has been to increase storage of rain rather than to increase the amount of fresh water. Another is that fossil groundwater has been widely seen as inexhaustible. Two fresh water collecting systems are outlined here and it is argued that they have no ultimate limitation, either by ...
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What rural Alaska can teach the world about renewable energy
I flew into Unalakleet, Alaska, on a late fall day. With about 700 people, Unalakleet is large by rural Alaska standards and serves as a regional hub. The village is located on a sandy spit of land where a clear river meets the turbid water of the Bering Sea. Out the plane window the sun shone bright, glittering off the wind-tossed whitecaps of the sea. To the east, the rolling Nulato Hills, clad ...
By Ensia
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Performance of water/steam injected gas turbine power plants consisting of standard gas turbines and turbo expanders
The present study was done to investigate the performance differences in terms of thermal efficiency and specific power output of: combined cycle power plants with integration of low temperature regenerative heat, standard gas turbines operated in wet cycle mode, turbo expanders and steam turbines (here: alternatives); combined cycle power plants with integration of low temperature regenerative ...
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