SF6 가스차단기 대전류 아크유동해석

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.

목차 (Table of Contents)

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