Load Management

  1. There are 8 files, weighing 6.1 MiB with 17,512 hits in Load Management.

    Displaying 1 to 8 of 8 files.

    Load Management

      Distributed generation as a solution for demand waiver heating loads
    » 25.5 KiB - 1,209 hits - November 19, 2008
    Use of large diesel generator to reduce peak loads on utility power grids in the USA

      EJP French EDF load control tarrif
    » 224.4 KiB - 5,379 hits - October 16, 2008
    A description by Schneider, the German electrical components company, of how the French EJP Load Reduction tarrif operates which encourages users to switch off loads (and switch to diesel generators where they have the) at variable and unpredictable times of EDFs choosing to assist in Load Management. The key point to understand is that the time periods are not fixed in advance, so EDF can readily influence large amounts of load with only half hours notice. This has lead to the installation of 5 GW of diesel generators in France. This is essentially the result of the difficulty in flexing the output of nuclear power stations. The tarrif applies from large industrials who often install several MW of generators, down to domestics who also can install there own small generator if they so choose. At the very least a domestic will choose to not use the washing machine on an EJP day - these are announced on the TV or by the internet.

      Load management demand control by frequency
    » 1.5 MiB - 2,245 hits - November 20, 2008
    Part2 - A system to be fitted to domestic appliances - fridges - dishwashers etc to allow the automatic switching off of devices when the frequency of the grid drops. Estimated to be 500 MW available of such load response in the UK. Effectively such an automatic load control system behaves as energy storage. Detailed description of various grid related issues.

      Load management demand control by frequency - part 1
    » 1.9 MiB - 2,186 hits - November 20, 2008
    A system to be fitted to domestic appliances - fridges - dishwashers etc to allow the automatic switching off of devices when the frequency of the grid drops. Estimated to be 500 MW available of such load response in the UK. Effectively such an automatic load control system behaves as energy storage. Detailed description of various grid related issues.

      Managing Variability
    » 388.8 KiB - 1,239 hits - July 29, 2009
    In order to comply with legislation from the European Union, the UK’s renewable energy target (to produce 15% of final energy consumption from renewable sources by 2020) may require between 35 and 40% of our electricity to come from renewable energy sources by 2020. After 2020, a higher proportion may be needed. A significant amount of this renewable electricity is likely to come from wind, and the variability of this power needs to be managed. Although aspects of the management of wind variability can be controversial, utilities the world over generally agree that there is no fundamental technical reason why high proportions of wind energy cannot be assimilated into the system. There is a large body of literature on the topic and the steady growth of wind power, worldwide, indicates that it is seen as a robust choice for reducing greenhouse gas emissions... There are numerous technical innovations at various stages of development that can mitigate the costs associated with variability. Improved methods of wind prediction are under development worldwide and could potentially reduce the costs of additional reserve by around 30%. Most other mitigation measures reduce the costs of managing the electricity network as a whole. ‘Smart grids’, for example, cover a range of technologies that may reduce the costs of short-term reserves; additional interconnections with continental Europe, including ‘Supergrids’ also deliver system-wide benefits and aid the assimilation of variable renewables. Electric cars hold out the prospect of reduced emissions for the transport network as a whole and could act as a form of storage for the electricity network -- for which the electricity generator would not have to pay.

      National Grid Load Management Letter
    » 24.5 KiB - 2,230 hits - November 13, 2008
    This letter indicates the total amount of Reserve Service and Frequency Service loads that National Grid has for balancing purposes.

      Operating the Electricity Transmission Networks in 2020
    » 1.3 MiB - 1,717 hits - July 30, 2009
    (Initial Consultation : June 2009 : National Grid Transco) : Foreword : This consultation document describes and examines the likely issues relating to operating the electricity transmission networks in 2020. Our assessment is based on a vision for 2020 of an electricity transmission system which evolves to connect extensive renewable generation to achieve climate change objectives. This sustainability objective must be achieved whilst maintaining a diverse generation background and appropriate network standards in order to maintain security of supply and to do so affordably. Since June 2008, we have worked with other energy companies, Government and Ofgem within the Electricity Networks Strategy Group (ENSG1). In March 2009, ENSG published its Vision of the network reinforcements required to meet the 2020 renewable energy target. This ENSG Vision was based on an energy scenario developed by National Grid and tested within ENSG covering the UK’s total energy demand across the electricity, heat and transport sectors. This scenario [is] known as ‘Gone Green’...The purpose of this document is to complement the ENSG work and examine the issues of system operation against the same Gone Green scenario. The document outlines our initial views on the key issues we will face in our role as System Operator of the electricity transmission networks and provides an indication of the services we are likely to require as 'residual balancer', along with the potential providers of those services. We welcome comments on the views expressed in this document.

      To the Claverton group from Paul Frederik Bach
    » 727.8 KiB - 1,307 hits - November 21, 2008
    Paul-Frederik Bach, ex Director West Denmark Power Grid - presentation in absentia (has been to 3 previous conferences) His thoughts on power grids, renewables, CHP, intermittency and windpower.

       

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