ELF magnetic field measurement and calculation in 500 kV gas insulated substation

Author

Sakai, K. ; Kato, K. ; Okubo, H. ; Matusmoto, A.

Author_Institution

Dept. of Electr. Eng., Nagoya Univ., Japan

Volume

2

fYear

2002

fDate

6-10 Oct. 2002

Firstpage

1220

Abstract

In this paper, we discussed the extremely low frequency (ELF) magnetic field environment in a 500 kV/275 kV gas insulated substation. We investigated magnetic field distribution around 3-phase GIS (gas insulated switchgear) by comparing the measurement results with calculation using finite element method (FEM). By simultaneous measurement of conductor current, we could have very good agreement of calculation results with measurement one. Particularly, the drastic mitigation of magnetic field with distance from GIS was characterized and quantified by comparing the one in open-air substation. In addition, the magnetic field distribution in GIS was discussed by analyzing the influence of induced current distribution in GIS sheath. From the results, we characterized the distinct features of magnetic field distribution in 500 kV/275 kV gas insulated substation by comparing with another type of substation.

Keywords

electric current measurement; electromagnetic induction; finite element analysis; gas insulated substations; gas insulated switchgear; magnetic field measurement; magnetic fields; 275 kV; 3-phase gas insulated switchgear; 500 kV; ELF magnetic field environment; FEM; conductor current; conductor current measurement; extremely low frequency magnetic field environment; finite element method; gas insulated substation; induced current distribution; magnetic field distribution; magnetic field measurement; open-air substation; simultaneous measurement; Current measurement; Finite element methods; Frequency; Gas insulation; Geographic Information Systems; Geophysical measurement techniques; Ground penetrating radar; Magnetic field measurement; Substations; Switchgear;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference and Exhibition 2002: Asia Pacific. IEEE/PES

Print_ISBN

0-7803-7525-4

Type

conf

DOI

10.1109/TDC.2002.1177652

Filename

1177652