中文摘要：

电晕是输电线路设计和运行中面临的重要问题之一,通过实验测量和模拟计算,得到了不同气压湿度下的正直流电晕流注脉冲特性;流注放电存在的电压区间随着气压和湿度的升高而增大,实验测量和利用流体模型计算得到的流注脉冲幅值均随着气压降低、湿度升高而减小;利用流注通道中电子密度的变化对这一现象进行了分析。

英文摘要：

Corona is one of the important problems in the design and operation of transmission lines. Positive DC corona streamer characteristics under different air pressure and humidity conditions are obtained through the experiment and simulation. Voltage range, in which streamer discharge existed, increases with rising of air pressure and humidity, while streamer pulse amplitude measured and calculated by fluid model decreases as air pressure falls or humidity rises. This phenomenon is analyzed through the variation of electron density in the streamer channel.