变压器局放在线监测信号处理的数字滤波技术

A Study of the Application of the Digital Filter in Online Monitoring Partial Discharge Signal Processing in Transformer

根据数字滤波的原理提出了用于变压器局部放电在线监测信号处理的有限冲击响应（ＦＴＲ）和自适应数字滤波方法；用编制的软件对局部放电脉冲信号进行处理的结果表明，该方法可以抑制干扰信号，提高信噪比。

Based on the study on digital filtering theory,a kind of signal processing FIR and selfadaptive filtering system applied in online monitoring PD in transformer is presented in this paper.The result of processing PD signal by programmed softward shows that it can suppress interference and improve Signal/Noise ratio.