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Corona ions from high-voltage power lines : nature of emission and dispersion

By Rohan Jayaratne, Xuan Ling and Lidia Morawska


Positive and negative small ions, aerosol ion and number concentration and dc electric fields were monitored at an overhead high-voltage power line site. We show that the emission of corona ions was not spatially uniform along the lines and occurred from discrete components such as a particular set of spacers. Maximum ion concentrations and atmospheric dc electric fields were observed at a point 20 m downwind of the lines. It was estimated that less than 7% of the total number of aerosol particles was charged. The electrical parameters decreased steadily with further downwind distance but remained significantly higher than background

Topics: 050206 Environmental Monitoring, Corona ions, power lines, atmospheric electric field, charged aerosols
Publisher: Elsevier
Year: 2011
DOI identifier: 10.1016/j.elstat.2011.03.014
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