Voltages induced by lightning on electric power distribution lines: Field data and analysis results for the period July 1984-1986
Technical Report
·
OSTI ID:5321848
Measurements have been made during 1984 and 1985 at the NASA Kennedy Space Center, Florida using a newly-developed spherical antenna of the time-domain horizontal and vertical electric fields from lightning return strokes. Statistics are presented for the fields of 42 return strokes. The peak horizontal field was about 0.03 of the peak critical field; the horizontal field had a mean risetime and a falltime to half value about 0.3 ..mu..s prior to the peak in the vertical field. Voltage has also been measured at one end of an unenergized power distribution line about 500 m in length and 10 m in height. Tables of measured peak voltages are given. By way of a newly-written computer program, the line voltage has been calculated using the measured fields as inputs. Agreement between the voltage measurement and theory is generally good. The lightning horizontal electric field can significantly contribute to the induced line voltage. The horizontal fields become larger as the earth conductivity decreases. 16 figs., 3 tabs.
- Research Organization:
- Florida Univ., Gainesville (USA). Dept. of Electrical Engineering
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5321848
- Report Number(s):
- ORNL/Sub-84-89650/1; ON: DE88007841
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
200301* -- Power Transmission & Distribution-- AC Systems
EHV & UHV-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
500100 -- Environment
Atmospheric-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
DATA
ELECTRIC DISCHARGES
ELECTRIC FIELDS
EXPERIMENTAL DATA
INFORMATION
LIGHTNING
MATHEMATICAL MODELS
NUMERICAL DATA
POWER TRANSMISSION LINES
EHV & UHV-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
500100 -- Environment
Atmospheric-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
DATA
ELECTRIC DISCHARGES
ELECTRIC FIELDS
EXPERIMENTAL DATA
INFORMATION
LIGHTNING
MATHEMATICAL MODELS
NUMERICAL DATA
POWER TRANSMISSION LINES