electrical power Articles

  • Optimizing Wind and Solar Power in Africa

    Editor's Note: The following is a news release authored by Julie Chao and issued by Lawrence Berkeley National Laboratory on April 5, 2017 To meet skyrocketing demand for electricity, African countries may have to triple their energy output by 2030. While hydropower and fossil fuel power plants are favored approaches in some quarters, a new assessment by the Department of Energy’s Lawrence ...


    By Smart Grid Observer

  • Why Are CHP Closing All Over The World?

    Burning of coal nowadays has become a big problem. The main reason for this is a rapid increase of mankind. So, China burns half of coal in the world. Since 2000 the share of coal in world energy production has increased from 25 to 30%, and the Chinese economy is responsible for 82% of this growth. In Beijing, it is customary to use ...


    By Lumex Instruments Group

  • What 2017 holds for Energy from Waste in the UK

    The UK’s EfW industry has enjoyed two decades of stable investment under the public private partnership (PPP)/public finance initiative (PFI) regime. This has led to a reduction in the amount of biodegradable household waste sent to landfill via the construction of local authority-backed EfW plants and contributed to an increase in recycling rates by incorporating facilities that remove ...


    By GPT Waste Management Ltd

  • A breath of nothing is decisive: AERZEN Turbo blowers with air bearings provide clear advantages compared to blowers with magnetic bearings

    Aeration tanks for wastewater treatment must be continuously provided with large air volumes. Turbo blowers offer here energy-efficient solutions. AERZEN has developed an amazingly simple method for the fast-rotating Turbo blowers - air bearings. The construction of AERZEN Turbo blowers is quite simple: A blade wheel, aerodynamically optimised and located directly on the motor shaft, rotates in ...

  • Corporate sustainability: A guide to measuring and improving energy efficiencies

    As environmental scrutiny of global industries continues to grow, governments are seeking to impose energy efficiency targets on companies in order to comply with new directives. One solution is to encourage energy suppliers to become energy service companies, who work with customers to identify potential savings and share the benefits this delivers. For the global food processing industry, this ...


    By TOMRA Sorting Recycling

  • 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.

  • Energy management for smart community

    Under the project title “Smartes Yspertal” an energy management concept for municipal administration buildings was created in the 1,900 inhabitant community in Lower Austria. Savings potential and inefficiencies in public buildings are thus to be shown. Microtronics has equipped the buildings with data loggers of the type ...

  • Agents controlling the electric power infrastructure

    The electric power grid is evolving from a centrally controlled grid with only a handful of regulated monopolies to an open, liberalised electricity market. In addition, more and more small-scale dispersed generators are deployed in distribution nets. This puts extra stress on the power grid, in an era when electricity is one of the most important commodities for economic, industrial and everyday ...


    By Inderscience Publishers

  • Harmonic assessment of electrical power systems

    Advances in semiconductor technology have resulted in an escalation in the numbers and power ratings of non-linear loads connected to the power system. At all voltage levels, equipment is being installed which generates harmonics. At transmission levels, FACTS devices are being installed for controlling power flow, HVDC links are used to transfer real power between AC systems and large industries ...


    By Inderscience Publishers

  • Hidden failures in electric power systems

    Hidden failures in equipment are those failures which occur at random and that do not lead to any discernible change in the state of the network and, therefore, remain undetected. Although hidden failures can occur in any equipment, the hidden failures in protective equipment have attracted a good deal of attention in recent years. Admittedly these failures are rare but, when the power system is ...


    By Inderscience Publishers

  • Policy and economic issues of electrical power and energy systems

    During the last quarter of the 20th century, many developments have served as catalysts for changes in the national energy policies of countries throughout the globe. These catalysts have affected the institutions and energy framework of virtually every country. In the majority of countries, the predominant electricity supply institution is the electric utility monopoly characterised by some ...


    By Inderscience Publishers

  • Electric Power Supply Quality in ship systems: an overview

    Power Supply Quality (PSQ) has become an important concern for ship electric systems. Thus, deviations of voltage from nominal values and wave-shapes could cause several problems onboard. Considering that ship system electrification eventually dominates according to the All Electric Ship concept, PSQ will be a key-factor of the normal operation, survivability and safety aboard. The paper provides ...


    By Inderscience Publishers

  • Electric power systems real-time monitoring and control

    In recent decades, several improvements have been achieved in power system operation and control. The evolution was mainly in the development of computational and communication systems. Both areas allowed the analysis of complex models of power system operation and control that resulted in a more flexible system controlled in almost real-time mode. All these improvements favoured the change of ...


    By Inderscience Publishers

  • Solar thermal power plants for the Spanish electricity market

    Solar thermal power plants are at present the cheapest technology for solar electricity production. At good sites Levelised Electricity Costs (LEC) of 11 Ct/kWh have been achieved in commercially operated power plants. Economy of scale and further technical improvements will reduce the LEC for future projects. On the 27th of March 2004 in Spain the existing feed-in-law has been modified in order ...


    By Inderscience Publishers

  • Wind power in electricity markets: key issues and challenges

    Due to the large penetration and continuous improvement in the wind power technology, wind farms are asked to operate similar to the conventional power plants. In emerging electricity market, wind power generators are now seen differently and should sustain with/without limited government support. Although cost reductions due to technological improvements bring wind power in competitions to ...


    By Inderscience Publishers

  • Control of the regimes of the electric power systems and deregulation

    This paper presents a survey of characteristics, balances, stabilities, reliability and regimes of Electric Power Systems (EPS) and Interconnected Electric Power Systems (IEPS). They are the most complicated and important 'machines' that have ever been created by humankind. Introduction of deregulation in the EPS will require and impose new systems, new algorithms and new rules for control. EPS ...


    By Inderscience Publishers

  • Critical infrastructures at risk: securing electric power supply

    The proper functioning of large infrastructures and in particular, the continuity of the vital services they provide is largely taken for granted, both by direct users and by those responsible for other, dependent infrastructures and services. The current paper addresses in a methodical manner, methods to deal with issues related to the risk and risk governance of critical infrastructures, with ...


    By Inderscience Publishers

  • Ships that harvest electrical power from ocean waves

    Electrical power generation from ocean waves is possible from ships that harvests wave energy through daily trips to offshore locations and that return back to port for the delivery of energy to the grid. Energy is stored locally on the vessel during harvesting phase and placed on the grid during periods of high demand (normally mid-day). Unlike conventional wave-power devices, the ships ...


    By GLOBE Foundation

  • Assessing the impact of interdependencies in electric power systems

    Electric power systems (EPS) greatly support our daily activities and are therefore among the most prominent critical infrastructures that need to be reliable and resilient in providing their services. They are rather complex and vulnerable systems, being composed by two interdependent infrastructures: the electric infrastructure (EI) and its information-technology-based control system (ITCS), ...


    By Inderscience Publishers

  • Is nuclear power more competitive producing electricity or hydrogen?

    Steam methane reforming is the world's dominant hydrogen production technology, using natural gas as both feedstock and fuel, but producing more than 9 kg of CO2 for each kilogram of H2. Natural gas prices between $6 and $8/GJ yield an average hydrogen production cost between $12 and $15/GJ, excluding the cost of CO2. High-temperature gas ...


    By Inderscience Publishers

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