Title :
Sensitivities and noise-resistant performances of various PD sensors located outside a GIS
Author :
Mizojiri, T. ; Murase, H. ; Sawa, Y. ; Maruyama, S. ; Nakajima, T. ; Hoshino, T.
Author_Institution :
Aichi Inst. of Technol., Toyota
Abstract :
This paper deals with the method of PD detection with the sensor (antenna) put at the outside of the GIS tank. It pays attention to the flange of the spacer as a leakage place of the PD electromagnetic radiation. Three kinds of antennas are proposed and made for trial purposes. And comparative study of the three antennas with the internal PD sensor (disc coupler) used worldwide so far is made from the viewpoint of the sensitivity characteristic and the noise-resistant performance. As a result, it is concluded that one kind of antenna has equal or even higher sensitivity to/than the internal disc coupler, without remarkable inferiority about the noise-resistant performance in the frequency range from 1.2 GHz to 2.7 GHz.
Keywords :
UHF antennas; gas insulated switchgear; partial discharge measurement; GIS tank; PD sensors; antenna sensitivity; disc coupler; frequency 1.2 GHz to 2.7 GHz; gas-insulated switchgear; noise-resistant performance; partial discharge detection; Electromagnetic interference; Electromagnetic radiation; Electromagnetic waveguides; Flanges; Frequency; Geographic Information Systems; Log periodic antennas; Partial discharges; Signal generators; Testing;
Conference_Titel :
Electrical Insulating Materials, 2008. (ISEIM 2008). International Symposium on
Conference_Location :
Mie
Print_ISBN :
978-4-88686-005-7
Electronic_ISBN :
978-4-88686-006-4
DOI :
10.1109/ISEIM.2008.4664532
