Dielectric Recovery Characteristics after High-Frequency Current Interruption in Vacuum Circuit Breaker
| Autor: | Ryoji Oshiro, Eiji Kaneko, Satoru Tamaki, Kazuki Ganaha |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Transient recovery voltage business.industry 020209 energy 020208 electrical & electronic engineering Electrical engineering Energy Engineering and Power Technology 02 engineering and technology Dielectric Arc (geometry) Electrode 0202 electrical engineering electronic engineering information engineering Vacuum chamber Electrical and Electronic Engineering Current (fluid) business Circuit breaker Voltage |
| Zdroj: | Electrical Engineering in Japan. 197:29-38 |
| ISSN: | 0424-7760 |
| DOI: | 10.1002/eej.22866 |
| Popis: | SUMMARY When the contacts of circuit breaker are opened just before current zero, the gap between contacts will still be very short. Therefore, it cannot withstand recovery voltage between the contacts. In such a case, multiple reignition is likely to take place. Many investigators had tried to clarify this phenomenon, and many reports have been published. However, high-frequency current interruption and dielectric recovery characteristics are related to some parameters (value of current, arc time, and so on). In addition, arc phenomenon has also been implicated. Hence, it is difficult to understand this phenomenon accurately. In this paper, we conducted dielectric recovery test and high-frequency current interruption test. Further, we conducted observation experiment using vacuum chamber in order to investigate the effect of small dc current. At the end, we calculated plasma density in the electrodes after high-frequency current interruption by considering the result of observation experiment and dielectric recovery test. |
| Databáze: | OpenAIRE |
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