Engineering design and primary experiment study of a 2.6-MV field-distortion oil switch

A 2.6-MV field-distortion oil switch was developed and tested. Engineering design theories of this switch, including electrode areas, oil anode-cathode (A-K) gaps, insulator-surface electric field, and A-K gaps of the pre-gas switch, were described in detail. Structure designs of the switch were pre...

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Bibliographic Details
Published inIEEE transactions on dielectrics and electrical insulation Vol. 24; no. 4; pp. 1978 - 1984
Main Authors Hu, Yixiang, Wei, Hao, Qiu, Ai'ci, Zeng, Jiangtao, Sun, Fengju, Cong, Peitian, Zhang, Xinjun, Yao, Weibo, Yang, Shi
Format Journal Article
LanguageEnglish
Published New York IEEE 2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Breakdown
Design engineering
Distortion
Electric breakdown
Electric field effects
Electric fields
Electrodes
high-voltage techniques
Insulators
jitter
Mathematical model
Natural gas
oil insulation
Oils
Switches
Time lag
time-delay arrays
Vibration
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Summary:A 2.6-MV field-distortion oil switch was developed and tested. Engineering design theories of this switch, including electrode areas, oil anode-cathode (A-K) gaps, insulator-surface electric field, and A-K gaps of the pre-gas switch, were described in detail. Structure designs of the switch were presented. Electric-field distributions of the oil A-K gap and insulator surface were analyzed and discussed. Also, switch breakdown processes were estimated. Finally, performances of this switch were tested on the "JianGuang-I" facility (2.3MV/350ns). Preliminary experiment results show that with a 250kV trigger voltage, the switch-breakdown time delay is about 132ns and its jitter (the standard deviation) is less than 4.4ns.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2016.006121