Title :
The deduction of partial discharge pulse current from its radiating UHF signal
Author :
Zhou, Lixing ; Li, Weiguo ; Su, Sheng
Author_Institution :
Coll. of Electr. Power & Inf. Eng., Changsha Univ. of Sci. & Technol.
fDate :
Nov. 29 2005-Dec. 2 2005
Abstract :
In this paper, a new method for obtaining partial discharge (PD) characteristic based on ultra-high frequency (UHF) measurements is presented. According to electromagnetic theory, the PD electromagnetic radiation can be regarded as the dipoles radiation. Based on which, the radiation model of partial discharge pulse current is established. The waveform parameter of PD pulse current can be obtained by spectrum analysis of its radiation UHF signal, and the waveform of PD pulse current can be deduced by the time integral of its radiation UHF signal. The result of simulating experiment shows that the method for deducing PD pulse current is effective and is contributed to the PD pattern recognition and insulation defect diagnoses
Keywords :
electromagnetic waves; partial discharges; UHF signal radiation; dipoles radiation; electromagnetic radiation; electromagnetic theory; insulation defect diagnosis; partial discharge pulse current; spectrum analysis; ultrahigh frequency measurements; Electromagnetic measurements; Electromagnetic radiation; Frequency; Partial discharges; Pattern recognition; Power transformer insulation; Pulse measurements; Pulse transformers; Signal analysis; UHF measurements; Partial discharge; UHF; characteristic analysis; dipole radiation; transformer;
Conference_Titel :
Power Engineering Conference, 2005. IPEC 2005. The 7th International
Conference_Location :
Singapore
Print_ISBN :
981-05-5702-7
DOI :
10.1109/IPEC.2005.206904
