带电检测装备线性度误差检测的影响因素研究

针对目前局部放电带电检测仪器缺乏统一检验规范的问题,根据超声波和暂态地电位局部放电检测仪检测原理与技术规范要求,结合实验室线性度误差校验结果,综合分析了信号幅值、频率、背景噪声对检测仪器线性度误差的影响,提出了用线性度误差表征超声波和暂态.地电位局部放电检测仪器性能的方法。研究结果表明:局部放电带电检测仪器线性度误差检测实验中,选择合适的信号幅值、频率对于检测结果的精度至关重要。

Research on influencing factors of linearity error detection for live testing equipments

Aiming at the problem of the present partial discharge live detector lacking unifieddetection regulation, based on test principles and technical specifications of ultrasonic and transientearth voltage partial discharge detector, combining with linearity error check result in laboratory,analyzes comprehensively the influences of signal amplitude, frequency, background noise on linearityerror of detectors, puts forward the method of using linearity error to indicate the partial dischargedetectors performance of ultrasonic and transient earth voltage. The research result shows that in thelinearity error detection test of partial discharge live detector, selection of the appropriate signalamplitude and frequency is very important to the precision of the test results.