Estimation of radiated high frequency magnetic and electric fields in a 245kV GIS

Author

RamaRao, J.V.G. ; Amarnath, J. ; Kamakshaiah, S.

Author_Institution

Dept. of Electr. Eng., B.V.C. Eng. Coll., Odalarevu, India

fYear

2010

fDate

17-20 Oct. 2010

Firstpage

1

Lastpage

4

Abstract

The transient high frequency electric and magnetic fields are generated in Gas insulated substations (GIS) systems during switching operations by both radiation and conduction mechanisms. In this paper the radiated transient electric and magnetic fields are measured by using high frequency field sensors at important locations in the 245kV GIS were presented. The measurements are carried out at three important locations including at bus link, cable termination and C.T position respectively. The frequencies of transient field´s ranges from 25MHz to 40 MHz and are observed at various locations considered for measurement. The magnitudes of transient fields are compared at each location. These results are very useful in order to prepare some precautionary protection measure to avoid malfunctioning of secondary equipment and metering equipment in GIS systems.

Keywords

electric field measurement; gas insulated substations; magnetic field measurement; power system measurement; GIS; cable termination; conduction mechanism; frequency 25 MHz to 40 MHz; gas insulated substation; high frequency field sensors; radiated high frequency magnetic field; secondary equipment malfunctioning; switching operation; transient field; transient high frequency electric field estimation; voltage 245 kV; Electric fields; Electric variables measurement; Frequency measurement; Geographic Information Systems; Magnetic field measurement; Magnetic fields; Transient analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2010 Annual Report Conference on

Conference_Location

West Lafayette, IN

ISSN

0084-9162

Print_ISBN

978-1-4244-9468-2

Type

conf

DOI

10.1109/CEIDP.2010.5723979

Filename

5723979