NDLI: optimizing validation of voltage and time for VLF (0.1 Hz) voltage testing on-site

Content Provider	IEEE Xplore Digital Library
Author	Junhua Luo Zhuochun Zhou Li Zhang
Copyright Year	2007
Description	Author affiliation: Wuhan High Voltage Res. Inst. of SGCC, Wuhan (Junhua Luo)
Abstract	Very low frequency (VLF) voltage test on-site has been applied widely for evaluating the status of installation and operation of medium voltage power cable lines. For optimizing and validating the test voltage and test time, the validity, equivalency and relationship of test voltage and test time of VLF voltage test is discussed and analyzed in this paper. The results of research and optimization in the paper have proved and verified that the VLF voltage test method of $3_{0}U0$ test voltage and 40 min test time is a better choice for checking and verifying the safe operational life of power cable lines, and 2.S $U_{0}/25$ min or 3U0/25 min is suggested for verifying the safe operational life of aged cable line that has been in service more than 7 years. VLF voltage test may establish the present status of dielectric quality of power cable lines.
Starting Page	17
Ending Page	20
File Size	1026582
Page Count	4
File Format	PDF
ISBN	9781424404469
DOI	10.1109/EEIC.2007.4562579
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power cables Breakdown voltage Dielectric liquids Life testing Medium voltage Aging Laboratories Solids Dielectric breakdown Frequency
Content Type	Text
Resource Type	Article

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