中文摘要：

潜供电弧能否及时熄灭对于电力系统单相自动重合闸具有重要意义,潜供电弧运动过程中的能量变化和燃弧时间之间存在着密切关系。首先分析了电弧的能量变化过程,建立了电弧输入输出能量的关联方程式,提出了潜供电弧燃弧时间的计算方法。建立了链式电弧模型,计算获取电弧实时运动过程所需的各项参数。进行潜供电弧低压物理模拟实验,将潜供电弧燃弧时间的计算结果与实验数据进行了对比验证,并与用临界长度计算燃弧时间的方法进行了比较。研究发现,上述提出的利用能量平衡的计算方法能更准确地计算燃弧时间,特别是有风情况下的燃弧时间,可为潜供电弧燃弧时间的仿真建模和单相自动重合闸提供更准确的计算方法。

英文摘要：

The reliable extinction of secondary arc is of great significance to the single-phase reclosing of the power system. Experiments have shown that there is a close relationship between the energy process and the arcing time during the arc motion process. Through the energy process analysis of secondary arc, the energy equations of the input power and output power were established, then the method of calculating the arcing time was proposed. The real-time motion parameters of the arc were acquired with the establishment of the dynamic arc chain model. Low voltage simulation experiment was then established. The computational results were compared with experimental data verification, also with the computational arcing time of critical length method. It was found that the arcing time can be calculated more accurately by the new energy balance method, especially with wind load, which can provide a more precise method for the modeling of secondary arc and single-phase reclosing of the power systems.