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      SF6 가스차단기 대전류 아크유동해석

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      https://www.riss.kr/link?id=A75896789

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      다국어 초록 (Multilingual Abstract)

      Arcs have long been used as a light and a heat source. Modern industrial applications demand the arc<br/>
      discharge to be run at a power level which has not been encountered hitherto. Because of the high power level<br/>
      encountered, there is a strong interaction between the arc discharges and their surroundings. This interaction<br/>
      makes quantitative prediction of industrial arc plasma systems extremely difficult. The design of such systems<br/>
      is still largely based on trial and error although the situation is rapidly improving because of the available<br/>
      computational power at a cost which is still rapidly coming down. The desire to predict the behavior of arc<br/>
      plasma system, thus reducing the development cost, has been the motivation of arc research. The most<br/>
      enormous duty of a circuit breaker is to interrupt fault current in a circuit, thereby protecting other<br/>
      components from damage. This is achieved by separating the two contacts in a gas or a liquid, and an arc is<br/>
      inevitably established between the contacts. The arc must be controlled during the high current phase of the<br/>
      AC cycle and interrupted at an appropriate current zero. In this paper, we have simulated the flow<br/>
      characteristics of high current arc and surrounding gas in a SF6 gas circuit breaker. This is based on an arc<br/>
      model which takes account of the turbulence enhanced momentum and heat transfer and the radial radiation<br/>
      transfer (including re-absorption at the edge of the arc). The radiation transfer in a circuit breaker is calculated<br/>
      based on a monotonic radial temperature profile from the axis. The temperature, velocity, electric field as well<br/>
      as the pressure can easily be visualized under arcing conditions.
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      Arcs have long been used as a light and a heat source. Modern industrial applications demand the arc<br/> discharge to be run at a power level which has not been encountered hitherto. Because of the high power level<br/> encountered, there...

      Arcs have long been used as a light and a heat source. Modern industrial applications demand the arc<br/>
      discharge to be run at a power level which has not been encountered hitherto. Because of the high power level<br/>
      encountered, there is a strong interaction between the arc discharges and their surroundings. This interaction<br/>
      makes quantitative prediction of industrial arc plasma systems extremely difficult. The design of such systems<br/>
      is still largely based on trial and error although the situation is rapidly improving because of the available<br/>
      computational power at a cost which is still rapidly coming down. The desire to predict the behavior of arc<br/>
      plasma system, thus reducing the development cost, has been the motivation of arc research. The most<br/>
      enormous duty of a circuit breaker is to interrupt fault current in a circuit, thereby protecting other<br/>
      components from damage. This is achieved by separating the two contacts in a gas or a liquid, and an arc is<br/>
      inevitably established between the contacts. The arc must be controlled during the high current phase of the<br/>
      AC cycle and interrupted at an appropriate current zero. In this paper, we have simulated the flow<br/>
      characteristics of high current arc and surrounding gas in a SF6 gas circuit breaker. This is based on an arc<br/>
      model which takes account of the turbulence enhanced momentum and heat transfer and the radial radiation<br/>
      transfer (including re-absorption at the edge of the arc). The radiation transfer in a circuit breaker is calculated<br/>
      based on a monotonic radial temperature profile from the axis. The temperature, velocity, electric field as well<br/>
      as the pressure can easily be visualized under arcing conditions.

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      목차 (Table of Contents)

      • Abstract
      • 1. 서론
      • 2. 수치해석
      • 3. 결과 및 고찰
      • 4. 결론
      • Abstract
      • 1. 서론
      • 2. 수치해석
      • 3. 결과 및 고찰
      • 4. 결론
      • 참고문헌
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