Title :
Discussion on discharge mechanism based on leakage current measurements of outdoor polymeric insulating materials in salt-fog test
Author :
Hikita, M. ; Miyata, M. ; Kurihara, S. ; Ohtsuka, S. ; Hashimoto, Y. ; Higashi, S.
Author_Institution :
Kyushu Inst. of Technol., Kitakyushu, Japan
Abstract :
We have developed a measuring system to separate leakage current of polymer material for outdoor insulator into three frequency components. We discuss the relation between discharge types and degradation on the surface of polymer materials for outdoor insulators. The special attention is paid to the discharge form in a salt fog test by considering each frequency component. Discharge image is analyzed by gaining the light emission intensity distribution using image-processing technology, allowing us to investigate the relationship between the three frequency components of the leakage current and discharge light emission.
Keywords :
leakage currents; organic insulating materials; discharge image; discharge mechanism; frequency component; image-processing technology; leakage current measurements; light emission intensity distribution; outdoor polymeric insulating materials; salt-fog test; Current measurement; Cutoff frequency; Frequency conversion; Frequency measurement; Leakage current; Materials testing; Plastic insulation; Polymers; Surface discharges; Thermal degradation;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2002 Annual Report Conference on
Conference_Location :
Cancun, Mexico
Print_ISBN :
0-7803-7502-5
DOI :
10.1109/CEIDP.2002.1048813
