接近速度对空气静电放电特性的影响

 通过理论分析和实验测量，研究了导体接近速度对空气放电的影响。理论计算了两导体相互接近时导体的自（互）电容系数、导体电势差、导体电势差随导体间的间隙（放电间隙）的变化率和导体电势差的时间变化率。实验研究了5 kV和10 kV放电电压下放电电流峰值和耦合电压峰-峰值随接近速度的变化关系。接近速度直接决定了空气击穿时导体电势差的时间变化率，同时也就决定了不同速度下的空气放电特性；接近速度影响了火花击穿的时间延迟，从而对空气放电产生了时间效应。

Influence of approaching speed on air electrostatic discharge

The influence of the approaching speed of two conductors on the air electrostatic discharge(ESD) was investigated by theoretical analysis and experimental measurement.The self-capacitance(mutual-capacitance) coefficient,the potential difference,the rate of change of potential difference with respect to discharge gap separation,the rate of change of potential difference with respect to time for approaching two conductors were calculated.The correlations between discharge peak currents and induced peak-peak voltages and different approaching speeds at 5 kV and 10 kV discharge voltage levels were obtained by experiment.The approaching speed determines the rate of change of potential difference with respect to time at the time of breakdown,and it also determines the air discharge traits for different approaching speeds.The approaching speed has influence on the lag time of spark breakdown,and this leads to the time effect to the air ESD.