Title :
Observation and analysis of multiphase back flashover on the Okushishiku Test Transmission Line caused by winter lightning
Author :
Motoyama, Hideki ; Shinjo, Kazuo ; Matsumoto, Yasuhiro ; Itamoto, Naoki
Author_Institution :
CRIEPI, Tokyo, Japan
fDate :
10/1/1998 12:00:00 AM
Abstract :
This paper describes observation and analysis of multiphase back flashover phenomena on the Okushishiku Test Transmission Line in the winter lightning season. Observation of lightning surges caused by natural lightning and rocket-triggered lightning strokes has been carried out on the test transmission line since 1987. From 1993 to 1996, lightning currents and voltages at the test transmission line were measured simultaneously for ten times. Especially, a four-phase back flashover was observed in 1994. A new calculation method of multiphase back flashover, which is based on the leader developing model, is proposed. Calculated results by the proposed method show good agreements with the observations
Keywords :
electric current measurement; flashover; lightning; power overhead lines; surges; voltage measurement; EMTP; Okushishiku Test Transmission Line; four-phase back flashover; insulation design; leader developing model; lightning currents measurement; lightning surges; lightning voltages measurement; multiphase back flashover; natural lightning; rocket-triggered lightning; winter lightning; Circuit testing; Current measurement; Distributed parameter circuits; Flashover; Lightning; Poles and towers; Power transmission lines; Sea measurements; Surges; Transmission lines;
Journal_Title :
Power Delivery, IEEE Transactions on
