Title :
Analysis of VFTO across bushing in 765kV gas insulated substation using EMTP software
Author :
Rao, R. Durga ; Amarnath, J.
Author_Institution :
Coll. of Eng., Dept. of EEE, JNTUH, Hyderabad, India
Abstract :
Due to the opening or closing of circuit breakers and disconnect switches in Gas Insulated Substations (GIS), Very Fast Transient Over-voltages (VFTO) are generated, which will bring an instantaneous change in voltage with a very short rise time and it is normally followed by oscillation having high frequencies. This paper describes the variations of VFTO magnitudes transformer bushing of a 765 kV GIS during different switching operations have been calculated and compared by using EMTP.
Keywords :
bushings; circuit breakers; gas insulated substations; power engineering computing; EMTP software; GIS; VFTO analysis; VFTO magnitude transformer bushing; circuit breaker closing; circuit breaker opening; gas-insulated substation; instantaneous change; short rise time; switching operation; very-fast transient overvoltages; voltage 765 kV; Damping; Ferrites; Gas insulation; Insulators; Resistors; Substations; Voltage control; EMTP; EMTP Software; GIS VFTO;
Conference_Titel :
Smart Electric Grid (ISEG), 2014 International Conference on
Conference_Location :
Guntur
Print_ISBN :
978-1-4799-4104-9
DOI :
10.1109/ISEG.2014.7005588
