XIE Qing, ZHANG Jiantao, CHEN Yidan, et al. Simulation Study on Detection Method of Partial Discharge Ultrasonic Array Based on RD-MUSIC Algorithm[J]. High voltageapparatus, 2019, 55(12): 1-6.
XIE Qing, ZHANG Jiantao, CHEN Yidan, et al. Simulation Study on Detection Method of Partial Discharge Ultrasonic Array Based on RD-MUSIC Algorithm[J]. High voltageapparatus, 2019, 55(12): 1-6. DOI: 10.13296/j.1001-1609.hva.2019.12.001.
Simulation Study on Detection Method of Partial Discharge Ultrasonic Array Based on RD-MUSIC Algorithm
Ultrasonic array is a reliable method for partial discharge location detection.However
the research on the direction of arrival of ultrasonic array signals is still not mature at present.So
a new method of direction of arrival(DOA) estimation based on the reduced dimension MUSIC(RD-MUSIC) algorithm is proposed.Firstly
the spectral peak space of PD ultrasonic array signal is searched
which is based on the two-dimensional parallel search mode.Then
the PD array signal is decomposed into one-dimensional sequential search based on the reduced dimension MUSIC algorithm.the output covariance matrix of array signal is processed
the resolution performance of the one-dimensional DOA estimation method for multi-point source is improved.Lastly
compared with RD-MUSIC and MUSIC
it shows RD-MUSIC algorithm has good performance
fast calculation speed
the direction finding error is less than MUSIC algorithm