中文摘要：

针对带高压物体的电晕放电辐射信号的时域、频域特征开展研究,对静电电晕放电电流、辐射场进行了理论分析,设计完成了静电电晕放电电流及辐射信号实验.研究发现,不同极性电晕放电的辐射场波形测试有明显差别：实验条件为负极性时,先发生电晕放电,但正极性放电发生时,脉冲幅值比负极性时大;负电晕电流脉冲波形的上升时间小于正电晕电流.实验结构不同,电晕放电辐射场的特征不同：利用电晕放电针与直流高压源直接相连的实验结构得到的放电波形的上升时间为十几个ns,频率分布集中在20～100 MHz;利用孤立导体电晕放电实验结构得到的放电波形的上升时间为几个ns,频率分布集中在200～600 MHz.结论对于研究带高压物体的电晕放电辐射信号特征具有很好的参考价值.

英文摘要：

The characteristics of signal radiated of time domain and frequency domain from corona discharge.The theories of corona current and its radiation field were analyzed.The experiments showed that the polarity effect of the waveform of corona current pulse was distinct,1） negative corona discharge occured firstly and the pulse amplitude was shorter than that of positive corona;2） the rising time of pulse waveform of negative corona current was smaller than that of positive corona current.The characteristics of radiation field from corona discharge was different when the experimental structure was different,the rising time of discharge waveform was about 10ns,and the frequency range was from 20 to 100 MHz when the experimental structure conjunction the source were used;the rising time of discharge waveform was several ns,and the frequency range was from 200 to 600 MHz when isolated conductor experimental structure were used.The results were important to research on the characteristics of signal radiated from corona discharge that happed on the charged object.