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Self-consistent radiation-based simulation of electric arcs: II. Application to gas circuit breakers

机译:基于自一致的基于辐射的电弧仿真:II。应用于气体断路器

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An accurate and robust method for radiative heat transfer simulation for arc applications was presented in the previous paper (part I). In this paper a self-consistent mathematical model based on computational fluid dynamics and a rigorous radiative heat transfer model is described. The model is applied to simulate switching arcs in high voltage gas circuit breakers. The accuracy of the model is proven by comparison with experimental data for all arc modes. The ablation-controlled arc model is used to simulate high current PTFE arcs burning in cylindrical tubes. Model accuracy for the lower current arcs is evaluated using experimental data on the axially blown SF_(6) arc in steady state and arc resistance measurements close to current zero. The complete switching process with the arc going through all three phases is also simulated and compared with the experimental data from an industrial circuit breaker switching test.
机译:在前一篇论文中提出了一种用于电弧应用的准确和坚固的辐射传热模拟方法(第I部分)。本文描述了一种基于计算流体动力学和严格辐射传热模型的自我一致的数学模型。该模型应用于在高压气断路器中模拟开关弧。通过与所有弧模式的实验数据进行比较,证明了模型的准确性。消融控制的电弧模型用于模拟在圆柱形管中燃烧的高电流PTFE电弧。使用在稳定状态下的轴向吹式SF_(6)电弧上的实验数据评估较低电流电弧的模型精度,并且电弧电阻测量接近电流为零。还模拟了通过所有三个阶段进行的完整切换过程,并与来自工业断路器开关测试的实验数据进行了模拟。

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