Title :
Suppression of VFT in 1100 kV GIS by adopting resistor-fitted disconnector
Author :
Yamagata, Y. ; Tanaka, K. ; Nishiwaki, S. ; Takahashi, N. ; Kokumai, T. ; Miwa, I. ; Komukai, T. ; Imai, K.
Author_Institution :
Tokyo Electr. Power Co. Inc., Japan
fDate :
4/1/1996 12:00:00 AM
Abstract :
With 1000 kV transmission lines planned in Japan, very fast transient (VFT) phenomena will be suppressed by installing a resistor in a disconnector of gas insulated switchgear (GIS). In this paper the VFT overvoltage suppressing effect of the resistor and the duty required of the resistor are clarified. A 1100 kV resistor-fitted disconnector was tested by constructing a charging current interruption test circuit. It has been clarified that the disconnector accepts the required duty. The disconnector tested is used for the field test
Keywords :
gas insulated switchgear; overvoltage protection; power system protection; switchgear testing; 1000 kV; 1100 kV; GIS; charging current interruption test circuit; disconnector testing; gas insulated switchgear; overvoltage suppressing effect; resistor; resistor-fitted disconnector; very fast transients suppression; Circuit testing; Electrodes; Gas insulated transmission lines; Gas insulation; Geographic Information Systems; Power system transients; Power transformer insulation; Power transmission lines; Resistors; Switchgear; Switching circuits; Voltage control;
Journal_Title :
Power Delivery, IEEE Transactions on
