Title :
Lightning performance of covered conductors overhead distribution lines
Author :
Thanasaksiri, T.
Author_Institution :
Dept. of Electr. Eng., ChiangMai Univ., Chiang Mai, Thailand
Abstract :
This paper analyzes the lightning performance of 22 kV, ChiangMai substation 4 to Doi-Suthep, overhead distribution line with covered conductors. The performance of line which related to the insulator flashover has been modeled and analyzed using EMTP. The backflashover rate (BFOR), shielding failure flashover rate (SFFOR) and induced voltage flashover rate (IVFOR) of line have been determined. The number of lightning flashovers from simulation, by applying ground flash density Ng = 6.5 × 10-5 Td2.277, are close with the data from the line outages recorder.
Keywords :
flashover; overhead line conductors; power overhead lines; shielding; ChiangMai substation; backflashover rate; covered conductors overhead distribution lines; ground flash density; induced voltage flashover rate; insulator flashover; lightning performance; line outages recorder; shielding failure flashover rate; Cable insulation; Conducting materials; Conductors; Flashover; Lightning; Power cable insulation; Power cables; Power distribution lines; Substations; Wire;
Conference_Titel :
Electrical Engineering/Electronics Computer Telecommunications and Information Technology (ECTI-CON), 2010 International Conference on
Conference_Location :
Chaing Mai
Print_ISBN :
978-1-4244-5606-2
Electronic_ISBN :
978-1-4244-5607-9
