Title :
Wavefront characteristics of the lightning current measured at the Toronto CN tower
Author :
Hussein, A.M. ; Janischewskyj, W. ; Milewski, M. ; Chang, J.S.
Author_Institution :
Ryerson Polytech., Toronto Univ., Ont., Canada
Abstract :
Lightning strikes to the Toronto CN Tower have been monitored since 1978. In this paper, a detailed description of the current measuring system installed at the Tower in 1990 and extended in 1997 is given. Typical current derivative and current waveforms of CN Tower strikes are presented. Cumulative statistics of the wavefront characteristics of lightning currents (maximum steepness, wavefront peak and risetime) measured at the CN Tower in 1999 are derived. These statistics have led to recommendations concerning instrumentation and techniques for the proper measurement of lightning currents especially for those encountered at elevated objects
Keywords :
electric current measurement; instrumentation; lightning; statistical analysis; Toronto CN Tower; current derivative; current measuring system; current waveforms; instrumentation; lightning current measurement; lightning strikes monitoring; maximum steepness; wavefront characteristics; wavefront peak; wavefront risetime; Coils; Current measurement; Electric variables measurement; Instruments; Lightning; Magnetic field measurement; Poles and towers; Rockets; Statistics; Velocity measurement;
Conference_Titel :
Electromagnetic Compatibility, 2001. EMC. 2001 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-6569-0
DOI :
10.1109/ISEMC.2001.950532
