摘要
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.
出处
《华北电力大学学报(自然科学版)》
CAS
北大核心
2017年第3期15-21,共7页
Journal of North China Electric Power University:Natural Science Edition
基金
国家自然科学基金资助项目(51307060)
中央高校基本科研业务费专项资金项目(2016ZZD07)
河北省自然科学基金面上项目(E2015502081)
河北省科技计划(Z2013086)
新能源电力系统国家重点实验室开放课题资助(LAPS16009)
关键词
局部放电
L型超声阵列传感器
MEMP算法
双局放源
仿真
partial discharge (PD)
L-type ultrasonic array sensor
MEMP algorithm
the double PD source
simulation