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Voltages Induced on a Power Distribution Line by Overhead Cloud Lightning

Conference ·
OSTI ID:6002394
 [1];  [1];  [1];  [1];  [1]
  1. Univ. of Florida, Gainesville, FL (United States)
+ Show Author Affiliations
Lightning electromagnetic fields interact with electric power lines to induce currents and line voltages. There are two major types of lightning: ground flashes and cloud flashes. In general, lightning between cloud and ground causes higher voltages on power lines, either by direct strike or by the inducing effects of nearby events, than does lightning within or between clouds or from cloud to air (all commonly known as cloud lightning). Voltages induced by overhead cloud lightning on a 448 m open-circuited power distribution line and the corresponding north-south component of the lightning magnetic field were simultaneously measured at the NASA Kennedy Space Center during the summer of 1986. The incident electric field was calculated from the measured magnetic field. The electric field was then used as an input to the computer program, EMPLIN, written and provided by Dr. F. Tesche, that calculated the voltages at the two ends of the power line. EMPLIN models the frequency-domain field/power line coupling theory found, for example, in Ianoz et. al. The direction of the source, which is also one of the inputs to EMPLIN, was crudely determined from a three-station time delay technique. The authors find reasonably good agreement between calculated and measured voltage waveforms.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Florida, Gainesville, FL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Federal Energy Management Program Office
DOE Contract Number:
AC05-84OR21400
OSTI ID:
6002394
Report Number(s):
CONF-9104163--5; ON: DE91010802
Country of Publication:
United States
Language:
English

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Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240303 -- Power Transmission Lines & Cables-- Overhead Lines-- (1990-)
240400* -- Power Transmission & Distribution-- Health & Safety-- (1990-)
CLOUDS
COMPUTER CODES
COMPUTERIZED SIMULATION
E CODES
ELECTRIC DISCHARGES
ELECTRIC FIELDS
ELECTRIC POTENTIAL
ELECTROMAGNETIC FIELDS
FEDERAL REGION IV
FLORIDA
FREQUENCY ANALYSIS
HAZARDS
INDUCTION
LIGHTNING
MAGNETIC FIELDS
NORTH AMERICA
OVERHEAD POWER TRANSMISSION
OVERVOLTAGE
POWER DISTRIBUTION SYSTEMS
POWER TRANSMISSION
POWER TRANSMISSION LINES
SIMULATION
USA
WAVE FORMS