电晕电流信号高速数据采集技术

高压环境下的电晕电流信号具有复杂的脉冲特性,为了获得精确完整的电晕电流信号,提出了一种多通道并行数据采集技术.通过对多通道并行采样技术的理论分析与仿真,研究了通道偏置误差、增益失配误差、时钟相位误差变化对并行采样的影响.结果表明信号经过通道失配误差校正后,所得信号波形和频谱与标准信号基本一致,可以满足系统工程设计要求.

High-Speed Data Acquisition Technology for Corona Current Signal

Corona current signals have complex pulse characteristics under high voltage.In order to obtain an accurate and complete corona current signal,a multichannel parallel data acquisition technology is proposed.Through the theoretical analysis and simulation on multichannel parallel sampling technology,the effects on the parallel sampling about the changes of the channel offset error,gain mismatch error and the clock phase error are studied.Results show that the signal waveform and spectrum are basically identical to the standard signal after channel mismatch error correction.It can meet the requirements of system engineering design.