一种用于在线检测局部放电的数字滤波技术

A digital filter technique used for on-line monitoring of partial discharge

研究局部放电在线检测技术中的干扰问题，针对在线检测过程中比较严重的连续周期性干扰信号提出一种数字滤波的抗干扰措施。实验室和现场试验表明数字滤波方法对各种频率的周期性干扰信号具有自适应性。

This paper discusses interference problems in on-line monitoring of partial discharge (PD). A new digital filter technique is presented for suppressing continuous periodical interference signal which is a quite serious interference in on-line monitoring of PD. A series of experiments and field tests show that this digital filter method has adaptive property for various frequency periodical interference signals.