Title :
Breakdown characteristics of MV distribution and electric traction lines insulators stressed by standard and short tail lightning impulses
Author :
Ancajima, A. ; Baran, I. ; Costea, M. ; Carrus, A. ; Cinieri, E. ; Dragan, G. ; Mazzetti, C.
Author_Institution :
Univ. of Piura, Piura
Abstract :
The paper presents the results of experimental tests performed with impulse voltage with short tail (STLI: 1.2/4 mus) on composite insulators in use in the MV distribution lines and electric traction lines. The voltage-time to breakdown characteristics under 1.2/4 mus waves are presented and compared with the characteristics under standard lightning impulse (LI: 1.2/50 mus). Models based on the disruptive effect, as proposed by Kind [9], and modified by Chowdhuri [13], are also considered and applied in order to predict the Volt-time characteristics under standard and non standard lightning voltages. The viability of the application of these models to the tested insulators is considered and discussed.
Keywords :
electric breakdown; insulators; lightning protection; power distribution lines; power overhead lines; power system protection; MV distribution lines; breakdown characteristics; composite insulators; electric traction lines insulators; impulse voltage; short tail lightning impulses; standard lightning impulses; Breakdown voltage; Dielectrics and electrical insulation; Electric breakdown; Impulse testing; Insulator testing; Lightning; Performance evaluation; Probability distribution; Surges; Tail; Lightning overvoltages; insulation coordination; short tail lightning impulses;
Conference_Titel :
Power Tech, 2005 IEEE Russia
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-93208-034-4
Electronic_ISBN :
978-5-93208-034-4
DOI :
10.1109/PTC.2005.4524343
