hydropower electrical system Articles

  • 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, ...

  • How a Specialized Automatic Control Valve Solved Flooding

    The Colombian area of Antioquia creates much of its clean power from hydropower plants along the Guadalupe River. The Guadalupe IV hydroelectric plant generates power with three vertical axis turbines that discharge water below the river level. To prevent flooding, however, the plant needed a solution that ensured the ejector ...


    By Singer Valve Inc.

  • The impacts of climate change on a Norwegian high-head hydropower system

    Hydropower is the most important renewable energy source for electricity in Norway. However, it is the most vulnerable resource to climate change. Despite the importance of hydropower and its vulnerability to climate change, many studies have been mostly concerned with large-scale resources assessment. This study aims to address the climate change impacts on the scale of a single hydropower ...


    By IWA Publishing

  • Intro to Hydropower Part:2 Measuring head & flow

    Measuring the stream course—Anna and Joe work downstream, shooting vertical drop (head) with a sight level, and getting a rough measurement of the pipe run at the same time. Small-scale hydro is the only renewable energy source that works for you 24 hours a day, 7 days a week. In the first article in this series (HP103), I explained the basics of hydroelectric system theory, and ...

  • How to make hydropower more environmentally friendly

    Hydropower provides 85 percent of the world’s renewable electricity, but comes with a hefty environmental price tag. Here’s what some are doing to fix that. Humanity got its first large-scale electricity thanks to hydropower. On Aug. 26, 1895, water flowing over Niagara Falls was diverted to spin two generators, producing electricity to manufacture aluminum and carborundum. Since ...


    By Ensia

  • 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 ...


    By IWA Publishing

  • 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 ...


    By Inderscience Publishers

  • Large-scale hydropower system optimization using dynamic programming and object-oriented programming: the case of the Northeast China Power Grid

    This paper examines long-term optimal operation using dynamic programming for a large hydropower system of 10 reservoirs in Northeast China. Besides considering flow and hydraulic head, the optimization explicitly includes time-varying electricity market prices to maximize benefit. Two techniques are used to reduce the ‘curse of dimensionality’ of dynamic programming with many ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • Study: 100% Renewable Electricity System is the Cheapest Option for South America

    Transitioning to a fully renewable electricity system is possible for South America by 2030. A study by Lappeenranta University of Technology (LUT) and VTT Technical Research Centre of Finland Ltd. also shows that a 100 percent renewable system (100% RE) is the cheapest electricity production option and can be achieved with very little energy storage. "South America has a unique renewable energy ...


    By Smart Grid Observer

  • Background: EU electricity and gas directives

    3.rd Energy Market Package, proposed September 2007 September 2007 the EU Commission proposed a revision of the electricity and gas market directives with amendmets of the directives on electricity and gas markets and the directives on cross-border trade of electricity and gas. The main changes are that all countries must have independant regulators of the electricity and gas markets, that these ...

  • As Global Demand for Electricity Grows, Geothermal Energy Heats Up

    January 9, 2017 — At 2:46 p.m. local time on Friday, March 11, 2011, Japan was rocked by the largest earthquake ever to strike its shores. The 9.1 magnitude quake triggered a devastating tsunami that killed more than 15,000 people. It also took out the back-up emergency generators that cooled the reactors at the Fukushima Daiichi nuclear power plant complex, causing a series of ...


    By Ensia

  • Upcoming EU electricity and gas directives should be changed to support EU`s new energy and climate policies

    It is important that the coming electricity and gas market directives ensures that renewable energy is given priority in the electricity and gas networks. This is both important when the energy is sold from local producers to the network and when the network is used for transport of energy from a renewable energy production unit to its owners. It applies to both electricity and gas networks, and ...

  • Building a resilient system

    Africa is the second largest continent in the world, with the majority of its people surviving every day with little or no access to electricity – 50% of the 1.2bn people lacking access to electricity globally are in Africa, earning less than $2/d and living in remote locations where conventional grid extension makes little economic sense. Tackling energy poverty is the key to ensuring ...


    By Energy Institute (EI)

  • Two Cases of Misleading Environmental Declarations Due to System Boundary Choices

    Abstract Environmental Product Declarations (EPDs) on electricity and nitrogen fertiliser are used to illustrate how a declaration or labelling* based on data from the current supply chain can be misleading when the production capacity in the supply chain is constrained. Three ways of avoiding such misleading declarations are suggested. Introduction: The cause of ...


    By 2.-0 LCA consultants

  • Renewable Power Generation Costs in 2014

    Executive Summary The competiveness of renewable power generation technologies continued improving in 2013 and 2014. The cost-competitiveness of renewable power generation technologies has reached historic levels. Biomass for power, hydropower, geothermal and onshore wind can all now provide electricity competitively compared to fossil fuel-fired power generation (Figure ES 1). ...

  • Hydro energy: techno-economic and social aspects within new climate regime

    Small hydro systems can provide electricity for: central-grid, isolated-grids, and/or remote power supplies. Small hydraulic power also provides an extra contribution to national electrical production in the case of consumption peaks. Although hydro is currently the second most used renewable energy source in the world, still there is a significant unexploited potential. The clean development ...


    By Inderscience Publishers

  • Chile Renewables Report Q1 2013

    We have downgraded our non-hydropower renewable generation growth forecast for 2013 from 6.2% to 5.6% due to new data from the government. Conversely, we have revised up our long-term growth forecast from 5.5% to 6.3%, due to our expectations of economic growth and the country’s current power situation. That said, we note that economic viability could be lacking in many renewable energy ...


  • Allocation of water consumption in multipurpose reservoirs

    The Intergovernmental Panel on Climate Change Special Report on Renewable Energy Sources represented a benchmark in the assessment of water consumption from electricity production. The numbers for hydropower ranged from very low to much larger than the other renewable technologies, partly explained by methodological problems. One of the methodological shortcomings identified was the lack of ...


    By IWA Publishing

  • Effluent to Energy and It Is Renewable

    The Systems Conveyance and Operations Program (SCOP), located in Clark County, Nevada, will enable the Clean Water Coalition (CWC) to improve the water quality of Lake Mead, the main water source for the Las Vegas Valley, and to meet the increasing water demands of its four member agencies: the City of Las Vegas (CLV), the Clark County Water Reclamation District (CCWRD), the City of Henderson ...

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