Title :
Development of an UHF detection system for partial discharge measurement in transformer insulation
Author :
Rengarajan, S. ; Parmar, R.N. ; Bhoomaiah, A. ; Kuntia, J.S.
Author_Institution :
Corp. R&D Div., Bharat Heavy Electr. Ltd., Hyderabad
Abstract :
A test system to detect partial discharges in transformer oil insulation, using an UHF sensor has been developed. The UHF sensor is basically a duel arm Archimedean spiral antenna with a frequency response of 300 -3000 MHz. The UHF signal is amplified using an RF amplifier and analysed both in time and frequency domains. Various types of discharges have been created by means of a discharge simulator and characterised. Also, the location of a discharge site is identified by using two antennae and time of flight method.
Keywords :
UHF amplifiers; UHF antennas; UHF detectors; partial discharge measurement; power transformer insulation; spiral antennas; RF amplifier; UHF detection system; UHF sensor; discharge simulator; duel arm Archimedean spiral antenna; frequency 300 MHz to 3000 MHz; partial discharge measurement; transformer oil insulation; Fault location; Insulation testing; Oil insulation; Partial discharge measurement; Partial discharges; Power transformer insulation; Sensor phenomena and characterization; Sensor systems; Spirals; System testing;
Conference_Titel :
Electrical Insulation, 2008. ISEI 2008. Conference Record of the 2008 IEEE International Symposium on
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4244-2091-9
Electronic_ISBN :
1089-084X
DOI :
10.1109/ELINSL.2008.4570288
