NDLI: Arc temperature profile measurement and characteristic analysis on an SF6 high-voltage CB

Content Provider	IET Digital Library
Author	Bai, Su Guan, Yonggang Luo, Haiyun Liu, Weidong
Abstract	The arc temperature profile in an interrupter, which determines the extinguishing characteristic of an SF6 circuit breaker (CB), is of interest to designers and developers. In this investigation, optical fibres and spectrograph were employed to measure the arc temperature profiles in a 252 kV SF6 CB during short current interrupting. The temperature profiles of the upstream, throat, and downstream of the nozzle have been measured. The optical fibres can transfer the arc light from the measuring points in the nozzle to the spectrograph. Moreover, the spectral line intensities of copper (Cu) 510.5, Cu 515.3, and Cu 521.8 nm were obtained by the spectrograph. The condition in CB can be treated as a local thermal equilibrium system, and the temperature profiles can be calculated by two-line method and Abel inverse method. The arc temperature profiles of the interrupter under 15–50 kA root mean square current have been analysed through the method established in this investigation.
Starting Page	3046
Ending Page	3051
Page Count	6
ISSN	17518687
Volume Number	12
e-ISSN	17518695
Issue Number	Issue 12, Jul (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/12/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2017.1792
Journal	IET Generation, Transmission & Distribution
Publisher Date	2018-03-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Abel Inverse Method Arc Light Arc Temperature Profile Measurement Characteristic Analysis Circuit Breaker Current 15 KA to 50 KA Inorganic Insulation Interrupters Local Thermal Equilibrium System Nozzle Nozzles Optical Fibre Root Mean Square Current SF6 High-voltage CB SF6 Insulation Short Current Interruption Spectral Line Intensities Spectrograph Switch Temperature Measurement Thermal Variables Measurement Two-line Method Voltage 252 KV
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering 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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