Title :
Very first transient overvoltages in GIS
Author :
Wenyuan, Zliang ; Baozhuang, Sfii ; Yuchang, Qiu
Author_Institution :
Xi´´an Electr. Power Coll., China
Abstract :
A differentiating/integrating (D/I) system which does not change GIS (gas insulated substation) configuration is developed for the measurement of very fast transient overvoltages (VFTO) occurring in GIS. Then the numerical computation of VFTO is studied on the base of field measurement results. Some factors influencing VFTO magnitude are analyzed through computation. The possible reason why VFTO may cause more failures in 300 kV and above GIS is presented
Keywords :
gas insulated substations; transients; voltage measurement; GIS; differentiating/integrating system; gas insulated substation; insulation co-ordination; very first transient overvoltage measurement; Current transformers; Electrodes; Frequency; Geographic Information Systems; Low voltage; Parasitic capacitance; Power system analysis computing; Power system reliability; Power system transients; Surges;
Conference_Titel :
Power System Technology, 1998. Proceedings. POWERCON '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4754-4
DOI :
10.1109/ICPST.1998.728955
