Simultaneous Measurement of Microscopic Image and Discharge Pulses at the Moment of Electrical Tree Initiation : Electrical Properties of Condensed Matter
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概要
- 論文の詳細を見る
This paper reports some experimental results concerning the tree initiation from a semiconductive needle electrode in polyethylene under a 50 Hz AC voltage. With a newly developed measuring system, the correspondence between partial discharge pulses and tree initiation and growth up to 10-20 μm in length was clarified for the first time. Tree observation and pulse measurement were made simultaneously. At the moment of tree initiation, positive pulses (current from the needle towards the grounding electrode) of 0.05-0.1 pC were first observed. A very small shade of the initial tree was observed when continuous positive pulses appeared; it grew rapidly to about 10 μm in length, along with the positive and negative pulses. After the tree branched, the growth rate dropped for a while. In many cases, the negative pulses disappeared during this stage.
- 社団法人応用物理学会の論文
- 1988-04-20
著者
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OKAMOTO Tamotsu
Tokyo Institute of Technology
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Ohtsuka Tomohiko
Department Of Physical Electronics Tokyo Institute Of Technology
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FUKAGAWA Hiroshi
Department of Electronic-Engineering, The University of Electro-Communications
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Okamoto T
Keio Univ. Yokohama Jpn
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Fukagawa Hiroshi
Department Of Electronic-engineering The University Of Electro-communications
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Okamoto Toshiyuki
Department Of Applied Science Faculty Of Engineering Kyushu University:(present Address)alps Denki C
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Hozumi N
Criepi
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Okamoto T
Central Res. Inst. Electric Power Ind. Abiko
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HOZUMI Naohiro
Yokosuka Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI)
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OKAMOTO Tatsuki
Yokosuka Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI)
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FUKAGAWA Hiromasa
Yokosuka Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI)
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