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

fYear

2008

fDate

9-12 June 2008

Firstpage

100

Lastpage

103

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2008. ISEI 2008. Conference Record of the 2008 IEEE International Symposium on

Conference_Location

Vancouver, BC

ISSN

1089-084X

Print_ISBN

978-1-4244-2091-9

Electronic_ISBN

1089-084X

Type

conf

DOI

10.1109/ELINSL.2008.4570288

Filename

4570288