NDLI: Investigations on the dielectric behavior of vacuum circuit breakers after switching operations

Content Provider	IEEE Xplore Digital Library
Author	Gramberg, I. Kurrat, M. Gentsch, D.
Copyright Year	2010
Description	Author affiliation: Institut für Hochspannungstechnik und Elektrische Energieanlagen, Technische Universität Braunschweig, Schleinitzstraße 23, 38106, Germany (Gramberg, I.; Kurrat, M.) \|\| ABB AG, Calor Emag Mittelspannungsprodukte, Oberhausener Str. 33, 40472 Ratingen, Germany (Gentsch, D.)
Abstract	The dielectric behaviour of vacuum interrupters (VI) before and after switching operations has been investigated. At first, switching operations with different intensities of load with short circuit currents at 50Hz frequency were performed. The test objects were a standard VI with a rated voltage of 12kV, a rated current of 1250A and a short circuit interruption current of 20kA. In order to simulate switching operations as they are performed under ordinary technical conditions with these VIs, a standard switchgear has been modified. The three, by default assembled VI poles of this switchgear have been replaced by one test setup pole, which allows an easy exchange of a single vacuum interrupter. The switchgear is connected to a high power test field, where the necessary 50Hz half cycles with 20kA rms of current intensity can be generated. The different current intensities were chosen in steps of 5kA in order to simulate different operational demands. It is known, that the dielectric performance of VIs can be affected and decreased by switching operations [1]. The dielectric behaviour of VIs that haven't been and the VIs that have been switched with different amounts of current, have been tested with lightning impulse voltage. Furthermore, the VIs have been opened and the traces of the switching operations have been investigated.
Starting Page	269
Ending Page	272
File Size	622667
Page Count	4
File Format	PDF
ISBN	9781424483679
ISSN	10932941
e-ISBN	9781424483686
e-ISBN	9781424483662
DOI	10.1109/DEIV.2010.5625755
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-30
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dielectrics Lightning Circuit breakers Optical switches Ceramics Voltage measurement
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Software

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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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