基于L型阵列与MEMP算法的双局放源超声定位仿真研究

Simulation Research of the Double PD Source Ultrasonic Location Based on L-type Array and MEMP Algorithm

电气设备局部放电超声阵列检测方法是新近发展起来的一种可靠性较高的检测方法。提出了一种基于增广矩阵束(matrix enhancement and matrix pencil,MEMP)的测向算法和L型阵列传感器的双局放源检测方法。首先,建立局放超声信号的L型阵列传感器模型;然后利用MEMP测向算法实现双局放源的波达方向估计,获得局放源的方位角和俯仰角。通过与传统的MUSIC算法测向仿真结果进行对比,验证了MEMP算法的有效性和优越性。

The ultrasonic array detection method for partial discharge （ PD ） of electrical equipment is a new method with high reliability. In this paper, a detection method for double partial discharge source is proposed based on matrix enhancement and matrix pencil （MEMP） direction-finding algorithm and an L-type array sensor. Firstly, a model of L- type array sensor for PD ultrasonic signal is established. Then the direction of arrival （DOA） estimation of double PD source can be obtained by MEMP direction-finding algorithm so that the azimuth and pitch angle of PD can he calculated. Compared with the direction-finding simulation results of MUSIC algorithm, the effectiveness and superiority of MEMP are verified.