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

fYear

2010

fDate

27-29 Oct. 2010

Firstpage

68

Lastpage

71

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);

fLanguage

English

Publisher

ieee

Conference_Titel

IPEC, 2010 Conference Proceedings

Conference_Location

Singapore

ISSN

1947-1262

Print_ISBN

978-1-4244-7399-1

Type

conf

DOI

10.1109/IPECON.2010.5697132

Filename

5697132