DocumentCode :
760247
Title :
DC electric fields from corona-generated space charge near AC transmission lines
Author :
Bracken, T. Dan ; Senior, Russell S. ; Bailey, William H.
Author_Institution :
T. Dan Bracken Inc., Portland, OR, USA
Volume :
20
Issue :
2
fYear :
2005
fDate :
4/1/2005 12:00:00 AM
Firstpage :
1692
Lastpage :
1702
Abstract :
This report characterizes long-term fluctuations in static electric field and ion concentrations near alternating-current transmission lines. Measurements of these parameters and meteorological data were collected at two sites in New Hampshire over more than two years. The dependence of field and ion levels on wind indicated that corona activity produced localized downwind enhancement of ambient atmospheric levels. Increases were observed for the positive field at all monitoring stations and at one station for negative fields. Enhanced downwind positive ion concentrations were prevalent at all stations. Increases in downwind negative ion concentrations were also present for all stations, but were much less frequent. The magnitudes of the enhanced fields and ion concentrations exceeded the range of upwind (ambient) values only for a small percentage of the time under most conditions. These results indicate the difficulty in using short-term survey measurements near transmission lines to characterize long-term perturbations to ambient atmospheric electric field and ion concentrations by corona-generated space charge.
Keywords :
atmospheric ionisation; corona; electric fields; power overhead lines; wind; AC transmission lines; DC electric fields; alternating-current transmission lines; corona-generated space charge; ion concentrations; long-term fluctuations; positive field; static electric field; transmission lines; wind; Atmospheric measurements; Corona; Current measurement; Electric fields; Fluctuations; Meteorology; Monitoring; Space charge; Transmission line measurements; Transmission lines; Corona; electric fields; ions; power transmission lines; space charge;
fLanguage :
English
Journal_Title :
Power Delivery, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8977
Type :
jour
DOI :
10.1109/TPWRD.2004.834309
Filename :
1413444
Link To Document :
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