Title :
Volt-time characteristics of short air gaps under nonstandard lightning voltage waves
Author :
Chowdhuri, P. ; Mishra, Akhilesh Kumar ; McConnell, B.W.
Author_Institution :
Fellow; Tennessee Technological University, Cookeville, TN 38505
Abstract :
The volt-time characteristics of 5-cm long rod-plane and rod-rod air gaps were experimentally determined with five different waveshapes of the applied impulse voltage. The front time of the waves was varied from 25 ns to 10 /spl mu/s, and the time to half value was varied from 0.5 ps to 100 ps. The volt-time characteristics were also checked analytically using the concept of disruptive effect. The parameters for the disruptive effect were experimentally determined.
Keywords :
air gaps; electric breakdown; insulation co-ordination; insulation testing; lightning protection; power system protection; 25 to 100 mus; 5 cm; applied impulse voltage; disruptive effect; nonstandard lightning voltage waves; power system insulation co-ordination; rod-plane air gaps; rod-rod air gaps; short air gaps; volt-time characteristics; waveshapes; Air gaps; Aluminum; Breakdown voltage; Delay effects; Dielectrics; Impulse testing; Lightning; Power system transients; Spark gaps; Student members;
Journal_Title :
Power Delivery, IEEE Transactions on
