【摘要】 为深入准确掌握气体特征参数对其放电特性的影响，分别对线-管式及线-板式电场下气体压力、温度和成分对放电特性的影响进行了试验分析。结果表明气体压力增大，伏安特性曲线右移，在气体压力较低（<0.08 MPa）时，击穿电压与气体压力近似呈线性关系，气体压力>0.08 MPa后基本呈对数关系或指数关系。由常压升至0.24 MPa，线-管式电场击穿电压提升30%～40%，击穿电流下降约60%；而线-板式电场击穿电压上升50%左右，击穿电流变化不大。气体温度升高，伏安特性曲线左移。气体成分对电压的影响相较电流更显著，影响程度与其中电负性气体占比有关。更多还原

【Abstract】 In order to deeply and accurately understand the influence of the characteristic parameters of the gas on its discharge characteristics, the effects of gas pressure, temperature and composition on the discharge characteristics under the wire-tube and wireplate electric fields were analyzed respectively. The results show that as the gas pressure increases, the volt-ampere characteristic curve shifts to the right, and the breakdown voltage is approximately linear with the gas pressure when the gas pressure is low(<0.08 MPa),and is basically logarithmic or exponential when the gas pressure >0.08 MPa. By increasing from atmospheric pressure to 0.24 MPa, the breakdown voltage of the wire-tube type electric field is elevated by 30% to 40%, and the breakdown current decreases by about 60%.Meanwhile, the breakdown voltage of the wire-plate type electric field rises by about 50%,and the breakdown current does not change much. As the gas temperature increases, the volt-ampere characteristic curve shifts to the left. The effect of gas composition on voltage is more pronounced than on current, and the magnitude of the effect is related to the proportion of electronegative gas in it.更多还原