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Measurement of Transient Electric Field Emission from a 245 kV Gas Insulated Substation Model during Switching
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 Title & Authors
Measurement of Transient Electric Field Emission from a 245 kV Gas Insulated Substation Model during Switching
Rao, M. Mohana; Thomas, M. Joy; Singh, B.P.;
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 Abstract
The transient fields generated during switching operations in a Gas Insulated Substation (GIS) are associated with high frequency components in the order of few tens of MHz. These transient fields leak into the external environment of the gas-insulated equipment and can interfere with the nearby electronics. Measurements of the transient fields are thus required to characterise the interference caused by switching phenomena in such substations. In view of the above, E-field emission measurement during a switching operation has been carried out for a 245 kV GIS model, using a resonant dipole antenna and D-dot sensor. The characteristics of the E-fields i.e., frequency spectra and their levels have been analysed and are reported in the paper. Suitability of the measurements has been confirmed by comparing frequency spectra of the measured and computed transient fields.
 Keywords
D-dot sensor;Electromagnetic Interference (EMI);Gas Insulated Substations;Gas-to-air bushing;Resonant dipole antenna;Transient E-field;
 Language
English
 Cited by
1.
내부쉴드 구조에 따른 컴팩트한 폴리머 부싱 설계에 관한 연구,조한구;유대훈;강형경;

한국전기전자재료학회논문지, 2009. vol.22. 5, pp.436-442 crossref(new window)
 References
1.
M. Mohana Rao, M. Joy Thomas and B.P. Singh, 'Frequency Characteristics of Very Fast Transient Currents (VFTC) in a 245 kV GIS', IEEE Trans. Power Delivery, vol. 20, no. 4, pp. 2450-2457, Oct 2005 crossref(new window)

2.
C.M. Wiggins and S.E. Wright, 'Switching Transient Fields in Substations', IEEE Trans. Power Delivery, vol.6, no. 2, pp. 591-600, Apr 1991 crossref(new window)

3.
C.M. Wiggins, D.E. Thomas, F.S. Nickel, T.M. Salas and S.E. Wright, 'Transient Electromagnetic Interference in Substations', IEEE Trans. Power Delivery, vol.9, no.4, pp. 1869-1883, Oct 1994 crossref(new window)

4.
S. Nishiwaki, K. Nojima, S. Tatara, M. Kosakada, N. Tanabe and S. Yanabu, 'Electromagnetic Interference with Electronic Apparatus by Switching Surges in GIS - Cable system', IEEE Trans. Power Delivery, vol.10, no. 2, pp. 739-746, Apr 1995 crossref(new window)

5.
M. Mohana Rao, M. Joy Thomas and B.P. Singh, 'Computation of EMI fields in a high voltage gas insulated substation during switching operations', IEEE Symposium on EMC, Boston, USA, August 2003