Investigation of Nanosecond Pulsed Discharge and Its Audio Characteristics in Atmospheric-pressure Air  

作　　者：REN Chengyan RAN Huijuan WANG Jue WANG Tao YAN Ping 

机构地区：[1]Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China [2]Key Laboratory of Power Electronics and Electric Drive, Chinese Academy of Sciences, Beijing 100190, China [3]Graduate University of Chinese Academy of Sciences, Beijing 100190, China

出　　处：《高电压技术》2013年第8期2038-2044,共7页High Voltage Engineering

基　　金：Project supported by National Basic Research Program of China （973 Program） （2011 CB209402）, National Natttral Science Foundation of China（50907069）.

摘　　要：There was no well-resolved mechanism of audible noise caused by corona discharge on UHV transmission lines. Hence we measured the sound pressure of pulsed discharges between needle-plane electrodes under different discharge conditions in air, for revealing the intrinsic relationship between discharge and its audible noise(AN). The relationship between discharge parameters and audio characte- ristics was drawn from the analysis of the electric and sound signals obtained in experiments. Experiment results showed that nanosecond pulsed discharges produce the sound pressure with a microsecond pulse lagging behind the discharge pulse in their waveforms. The peak value of the sound pulse decreases and its high frequency component gradually attenuates, when the measuring distance from discharges increases. The sound pulses correlate with the discharge current and voltage significantly, especially the current. The audible noise produced by repetitive pulsed discharge increases with the strength, duration, and pulse repetition rate of discharge.There was no well-resolved mechanism of audible noise caused by corona discharge on UHV transmission lines. Hence we measured the sound pressure of pulsed discharges between needle-plane electrodes under different discharge conditions in air, for revealing the intrinsic relationship between discharge and its audible noise（AN）. The relationship between discharge parameters and audio characte- ristics was drawn fTom the analysis of the electric and sound signals obtained in experiments. Experiment results showed that nanosecond pulsed discharges produce the sound pressure with a microsecond pulse lagging behind the discharge pulse in their waveforrns. The peak value of the sound pulse decreases and its high frequency component gradually attenuates, when the measuring distance fi：om discharges increases. The sound pulses correlate with the discharge current and voltage significantly, especially the current. The audible noise produced by repetitive pulsed discharge increases with the strength, duration, and pulse repetition rate of discharge.

关 键 词：脉冲放电 音频特性 大气压力 空气 纳秒 特高压输电线路 无线网络连接 噪声产生 

分 类 号：TN912.26[电子电信—通信与信息系统] O461.25[电子电信—信息与通信工程]