Journal
IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING
Volume 13, Issue 8, Pages 1136-1141Publisher
WILEY
DOI: 10.1002/tee.22676
Keywords
SF6 decomposition; direct current; partial discharge; pressure
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Funding
- National Key Technologies R&D Program of China [2017YFB0902705]
- National Natural Science Foundation of China [51377181, 51607127]
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To clarify the influence of pressure on SF6 decomposition under positive DC partial discharge (PD), SF6-positive DC partial discharge decomposition experiments at different pressures were carried out. We found that the contents of SF6 primary decomposition products are proportional to openBdP/E. Keeping the chamber volume and external temperature constant, the difference of air chamber pressure means that the electronic mean free path is different. So, different pressures make a difference in the energy of free electrons obtained in a single flight, which results in the difference in the reaction rates of SF6 primary decomposition and further influences the formation of SF6 PD characteristic decomposition components. (c) 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
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