变压器局放超声法在线定位中的信号处理

Signal Processing of On-Line Locating PD in Transformer

提出了适用于变压器局放在线定位的电、声信号对应关系的判定方法和超声信号处理方法，其可有效排除干扰，较可靠地检测出局放超声信号并确定时延。

An ultrasonic signal processing method of on-line locating PD in transformer is described in this paper. It can detect ultrasonic signal sensitively and the result of time delay estimation is satisfactory. A method to determine the relation between electrical signal and ultrasonic signal of the on-line locating is also supplied.