Corona Noise Reduction
Project flyer final 520.1 KByte
Summary
In the CONOR project the acoustical emissions of high voltage overhead lines have been investigated with the emphasis on the tonal emissions at twice the mains frequency (100 Hz). In this project it was first possible to give an explanation of the processes leading to 100 Hz emissions. With this model it was also first possible to find a procedure permitting a quantification of the levels to be expected in a given situation. Based on this, different measures leading to noise reduction were explored. The investigation also involved unorthodox methods such as changes of the usual bundle geometries or hydrophilic coatings, which both turned out to diminish.Project Duration
November 2005 - December 2008Partner
EnBW,Vorarlberger Illwerke, Austrian Power Grid, Federal Office for the Environment FOENFurther information
www.eeh.ee.ethz.ch/...scientific publication VSE-Bulletin (DE)
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