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2014 Fiscal Year Final Research Report

Verification of efffect of natural gas for substitution of SF6

Research Project

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Project/Area Number 24560349
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Power engineering/Power conversion/Electric machinery
Research InstitutionTokyo City University

Principal Investigator

YUMOTO MOTOSHIGE  東京都市大学, 工学部, 教授 (10120867)

Project Period (FY) 2012-04-01 – 2015-03-31
KeywordsSF6代替ガス / 窒素ガス / 電子供給 / 電子付着 / 脱励起 / 窒素原子
Outline of Final Research Achievements

Nitrogen molecule accumulates internal energy easily during a long period by electrical discharge. Accordingly, electrons are supplied continuously even after discharge interruption. Phenomenon of electron supply is very dangerous for the power equipment. Thus, to decrease the number of supplied electrons, small amount of gases which have properties with electron attachment effect or de-excitation effect of internal energy. Results showed that de-excitation gas was not effective. On the other hand electron attachment gas, especially SF6 was effective. From the results it was also deduced that nitrogen atom accumulates internal energy for a long period under the condition of high pressure.

Free Research Field

放電工学

URL: 

Published: 2016-06-03  

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