Figures for Q4 2005
The International Energy Agency publishes a monthly survey of worldwide electricity production, trade, and consumption. The figures for the 4th Quarter of 2005 were released in the April 2006 edition. The following graph shows the amount of electricity production, imports, and exports for several countries.Read full article
In this webcast, David Chapman from CDA UK will present solutions for managing transformers in the presence of large harmonic distortion. K-Factor and Factor K calculations offer derating factors to cope with the extra losses resulting from harmonics. But in practice, derating is an administrative measure that is hard to maintain with growing load. For new installations, transformers specifically designed to cope with harmonic loads need to be considered.Read full article
Transformers stand in a concrete cubicle and hum. This is usually all that is perceived of them. Very much unlike this unobtrusive activity might let you suppose, they do much more than just to transform electrical energy from one voltage level to another. They also introduce some resistance and, prior to all, some reactance into the electrical system, whereas especially the latter is not at all just an undesired by-product but also needed for a safe, efficient and reliable operation of a network.Read full article
Distribution transformer used for electricity supply of the high-speed railway (Thalys line Brussels - Cologne).
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Courtesy European Copper Institute (reproduction allowed provided source is acknowledged)Read full article