Title :
The Influence of Acoustic Velocity on the Space Charge Measurement by Pulsed Electro-Acoustic
Author :
Zhang, Zongxin ; Tu, Youping ; Wang, Qian
Author_Institution :
Key Lab. of High Voltage & EMC, Beijing North China Electr. Power Univ., Beijing, China
Abstract :
This paper concerned on the influence of acoustic velocity change on the pulsed electro-acoustic (PEA) space charge measurement. The space charge measurement results of an air gap and low density polyethylene (LDPE) samples have been compared under different temperature respectively. According to the experimental results, it was found that acoustic velocity of test samples changes with the increasing of temperature, and which would bring distortion into space charge output signals. Moreover, the influence of temperature on the test results was corrected based on the real velocity which corresponding to the working temperature.
Keywords :
acoustic waves; charge measurement; insulation testing; polyethylene insulation; pulsed electroacoustic methods; space charge; LDPE; acoustic velocity; air gap; low density polyethylene; pulsed electro-acoustic; space charge measurement; Acoustic measurements; Acoustics; Charge measurement; Electrodes; Space charge; Temperature distribution; Temperature measurement;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6253-7
DOI :
10.1109/APPEEC.2011.5749170
