By Topic

Development of a pocket ultrahigh frequency partial-discharge detector to warn switchyard personnel of imminent failure of a nearby high-voltage plant

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Lopez-Roldan, J. ; Powerlink Queensland, Virginia, QLD, Australia ; Tee Tang

A pocket device to warn switchyard personnel of imminent insulation breakdown in a nearby HV plant has been developed. The detector is based on the well-known UHF technique for PD detection. However, it is much smaller, lighter, and cheaper than a conventional PD detector. It can discriminate against communication, broadcasting, and external PD sources present in substation switchyards and thus avoid false alarms. During the design stage, an analysis of the electromagnetic emission spectra of several substations was carried out. Continuous recording of frequency and amplitude enabled the identification of several discharge sources, whose characteristics were very dependent on climatic conditions. During laboratory and field testing, several RF sensors and pulse processing algorithms were tested using an oil tester to simulate PD in oil. Final tests in outdoor substations were carried out to verify the immunity of the detector to external back ground emissions while retaining an acceptable detection range for targeted internal discharges. The developed UHF pocket alarm has much greater sensitivity than AM radio, the current detection method. It provides simple light and sound warnings and thereby eliminates the need for continuous interpretation of interference sounds on a detuned radio.

Published in:

Electrical Insulation Magazine, IEEE  (Volume:28 ,  Issue: 1 )