NDLI: Time resolved measurements of x-ray induced partial discharges

Content Provider	IEEE Xplore Digital Library
Author	Adili, S. Herrmann, L.G. Franck, C.M.
Copyright Year	2012
Description	Author affiliation: Power Systems and High Voltage Laboratories, ETH Zurich, 8092 Zurich, Switzerland (Adili, S.; Franck, C.M.) \|\| ABB Switzerland Ltd, Corporate Research, CH-5405 Baden-Dättwil, Switzerland (Herrmann, L.G.)
Abstract	The initial statistical time lag of partial discharge (PD) measurements was eliminated by using short x-ray pulses (duration 50 ns) for triggering. Phase resolved PD (PRPD) patterns at low electric field levels were recorded. No significant difference between the PRPD patterns after x-ray pulse triggering and naturally incepted PDs was observed. These measurements were performed with self-produced spherical void samples and even voids of 0.5 mm were detected after one x-ray pulse application. It is assumed that the x-ray pulses provide necessary start electrons to start an avalanche. However, in order to study the effect of the x-ray pulse on the triggering and on the discharge mechanism, time resolved PD measurements with an ultra-wideband detection circuit are necessary. In this work, the classical wide-band PD detection circuit was modified and time resolved measurements were performed. Particular emphasis is placed on the effect of the x-ray dose on the first PD pulses, here shown for one void size. Moreover, the temporal development of subsequent discharges after the total decay of the x-ray pulse is studied. To increase the accuracy of the detection, optical measurements of the discharge are synchronously made with a photomultiplier tube.
Starting Page	125
Ending Page	128
File Size	351981
Page Count	4
File Format	PDF
ISBN	9781467312530
ISSN	00849162
e-ISBN	9781467312523
e-ISBN	9781467312516
DOI	10.1109/CEIDP.2012.6378737
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-14
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Partial discharges Discharges (electric) Pulse measurements Current measurement Electrodes Partial discharge measurement Time measurement
Content Type	Text
Resource Type	Article

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2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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