Study of Improved RSS Algorithm for Ultrasonic Array Applied to PD Location in Transformer

被引：24
|
作者：
Luo Yongfen [1 ]
Du Fei [1 ]
Pan Wei [1 ]
Gao Jiaping [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Elect Engn, Xian 710049, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2015年 / 15卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Partial discharge (PD); wideband focus; high-order cumulants; virtual array expansion; noise suppression; POWER TRANSFORMERS;
D O I：
10.1109/JSEN.2015.2432058
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An improved rotated sub-space (RSS) algorithm for the application of array technology in partial discharge (PD) location in transformer. The algorithm is based on classic RSS algorithm and high-order cumulants, and it is studied through numerical simulation and experimental tests. Based on an L-shaped and a cross-shaped array, the simulation of single and multiple PD source direction is carried out to compare the classic RSS algorithm with improved RSS algorithm. The results confirm the processing capacity in wideband focus, aperture expansion, enhance of directing, and noise suppression of improved RSS algorithm. Moreover, both algorithms are used for PD location experiments, showing that the error of improved RSS algorithm is similar to 3 degrees. Improved RSS algorithm solves the problem of wideband focusing in PD location, enhances the performance of the array aperture and directing, achieves the effect of the array consists of much more elements with a virtual expansion, simplifying the follow-up circuit.
引用
收藏
页码：4986 / 4991
页数：6
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