Journal
IEEE SENSORS JOURNAL
Volume 14, Issue 2, Pages 357-361Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2013.2283156
Keywords
PD location; L-shaped ultrasonic array; high-order cumulants; array expansion
Funding
- National Natural Science Foundation of China
Ask authors/readers for more resources
A relocatable combined sensor is designed to locate partial discharge (PD) in a transformer. Based on the sensor, PD location experiments are conducted. The sensor consists of a conformal L-shaped ultrasonic array of 13 elements and includes an ultra-high-frequency electromagnetic sensor. The L-shaped array achieves the effect of 97 virtual elements expanded with high-order cumulants processing technology. It greatly improves the aperture and direction sharpness of the array. The PD location experiments were carried out on a PD experiment platform. The result shows that the combined sensor can distinguish and locate one or multiple PD sources with average relative locating error 2.1% and 4.8%, respectively. Virtual expansion of an array with fewer number elements helps to design a miniaturized and combined sensor. This work should provide as a foundation for application of array technology in power equipment.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available