Title :
The evaluation of fifty percent breakdown voltage across Iranian 400 kV transmission line insulators
Author :
Vahidi, B. ; Abedi, M. ; Hosseinian, S.H.
Author_Institution :
Dept. of Electr. Eng., Amirkabir Univ., Tehran, Iran
Abstract :
The Iranian isokeraunic map developed by the authors is presented. A statistical analysis of tower footing resistances of 400 kV lines in the Iranian national grid is also presented. An attempt has been made to evaluate lightning fifty-percent breakdown voltage (V50 ) across 400 kV insulators in Iran, according to obtained keraunic levels and probabilistic results of tower footing resistances. A comparison between calculated V50 and V50 of presently installed insulators of 400 kV lines in the Iranian transmission system is also presented
Keywords :
insulators; lightning; power overhead lines; 400 kV; Iranian isokeraunic map; breakdown voltage; lightning; national grid; probabilistic results; statistical analysis; tower footing resistances; transmission line insulators; Breakdown voltage; Computer hacking; Dielectrics and electrical insulation; Equations; Flashover; Lightning; Poles and towers; Power overhead lines; Statistical analysis; Transmission lines;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-87942-568-7
DOI :
10.1109/ICPADM.1991.172065
