Title :
Influence of terminal components for suppression of high-frequency transients in GIS
Author :
Tavakoli, Ahmad ; Gholami, Ahmad
Author_Institution :
Center of Excellence for Power Syst. Autom. & Oper., Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
Reportedly, switching operation in gas insulated substation (GIS) leads to deformation of transformer winding and bushing failures. This paper presents practicable method that is investigated for mitigation of overvoltage magnitude and resonance frequency amplitude of very fast transients (VFT) at the power transformer. Properties of this method are simple and inexpensive with at least changes in installed GIS. This method can be changing in the type and length of terminal components. Also alteration of load side terminal and source side terminal are examined. Computer simulation has been done using the alternative transients program (ATP), a widely used version of EMTP.
Keywords :
bushings; deformation; gas insulated substations; overvoltage protection; power engineering computing; power system transients; power transformer insulation; transformer windings; ATP; EMTP; GIS; alternative transients program; bushing failures; deformation; gas insulated substation; high-frequency transients suppression; overvoltage magnitude mitigation; power transformer; resonance frequency amplitude; transformer winding; Geographic Information Systems; Power transformers; Resonant frequency; Switches; Transient analysis; Voltage control; EMTP/ATP; gas insulated substation (GIS); resonance frequencies; switching; very fast transient overvoltages (VFTOs);
Conference_Titel :
IPEC, 2010 Conference Proceedings
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-7399-1
DOI :
10.1109/IPECON.2010.5697132
