Pressure Rises Due to Arc Under Insulating Oil in Closed Vessel-Relationship between Bubble Behavior and Pressure Rises
| Autor: | Tomo Tadokoro, Tadashi Amakawa, Mikimasa Iwata, Toshiya Ohtaka, Masashi Kotari |
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| Rok vydání: | 2016 |
| Předmět: |
Electric power equipment
Fundamental study Materials science Petroleum engineering Computer Networks and Communications Transformer oil Arc duration 020209 energy Applied Mathematics Bubble General Physics and Astronomy 02 engineering and technology Mechanics law.invention Distribution system law Signal Processing 0202 electrical engineering electronic engineering information engineering Dynamic pressure Electrical and Electronic Engineering Transformer |
| Zdroj: | Electronics and Communications in Japan. 99:91-102 |
| ISSN: | 1942-9533 |
| Popis: | When a fault arc occurs in oil-filled electric power equipment such as transformers in transmission and distribution systems, it generates a flammable gas and a dynamic pressure rise that may trigger an explosion. The purpose of this fundamental study is to investigate the effects of the arc under electrical insulation oil on pressure rises in a closed vessel containing air and oil. In particular, this paper is intended to investigate the relationship between the pressure rises and the generated bubble behavior by the arc. The pressure rises in both air and oil are measured under experimental conditions involving an arc current ranging from 2.3 kA to 8.9 kA, an arc duration of 10i?źms or 100i?źms. Experimental results show that the behavior of a bubble affects the pressure rises in the air and the oil as low-frequency pressure oscillation comparatively. |
| Databáze: | OpenAIRE |
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