NDLI: Influence of switching conditions on the VFTO magnitudes in a GIS

Content Provider	IEEE Xplore Digital Library
Author	Kumar, V.V. Thomas, J.M. Naidu, M.S.
Copyright Year	1986
Abstract	Estimation of very fast transient overvoltage (VFTO) has been carried out using EMTP for various switching conditions in a 420 kV gas insulated substation. The variation of VFTO peak along the GIS bus nodes for disconnector and circuit breaker switching operations as well as the variation of VFTO peak with different magnitudes of trapped charges have been studied. The results indicate a distinct pattern of variation of VFTO peak along the nodes of the GIS bus in the case of disconnector switch operation as compared to that of circuit breaker operation. It has also been noticed that the variation of VFTO peak levels are not in direct proportion to the trapped charge present on the HV bus.
Sponsorship	IEEE Power Engineering Society
Starting Page	539
Ending Page	544
Page Count	6
File Size	126397
File Format	PDF
ISSN	08858977
Volume Number	16
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Geographic Information Systems Substations Gas insulation Switches Switching circuits Switchgear Circuit breakers Frequency EMTP Dielectrics and electrical insulation
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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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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