Simulation of PD location in power transformer based on Root Multiple Signal Classification method

Author

Li, Yan-qing ; Xie, Qing ; Wang, Nan ; Xiang, Xin ; Lü, Fang-Cheng

Author_Institution

Key Lab. of Power Syst. Protection & Dynamic Security Monitoring & Control, North China Electr. Power Univ., Baoding, China

fYear

2009

fDate

19-23 July 2009

Firstpage

553

Lastpage

556

Abstract

Due to the heavy calculation and low estimation precision with little signal-to-noise (SNR) of MUSIC (multiple signal classification) algorithm in partial discharge location used ultrasonic phased array, in this paper, a new location method is proposed based on root-multiple signal classification (Root-MUSIC). Firstly, Root-MUSIC algorithm is used for direction of arrival estimating of PD source. Secondly, space location of PD source is realized by crossover location principle. Finally, the result of simulation based on 7 times 7 plane phased array model vertifies the correctness of the new method.

Keywords

partial discharges; power transformers; signal classification; Root-MUSIC; crossover location; partial discharge location; plane phased array; power transformer; root multiple signal classification method; ultrasonic phased array; Accidents; Classification algorithms; Covariance matrix; Direction of arrival estimation; Eigenvalues and eigenfunctions; Multiple signal classification; Partial discharges; Phased arrays; Power transformers; Signal analysis; crossover location; partial discharge; root-MUSIC;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the

Conference_Location

Harbin

Print_ISBN

978-1-4244-4367-3

Electronic_ISBN

978-1-4244-4368-0

Type

conf

DOI

10.1109/ICPADM.2009.5252369

Filename

5252369