高电压技术2013，Vol.39Issue(5)：1054-1060,7.DOI:10.3969/j.issn.1003-6520.2013.05.005
采用改进型圆形超声阵列传感器的油中局放定位
Locating Partial Discharge in Oil Using the Improved Circular Ultrasonic Array Sensor
摘要
Abstract
The method of using ultrasonic array to locate partial discharge (PD) is one of the latest achievements in the modern array sensor technology and array signal processing technology.Thus,we practically adopted an improved circular ultrasonic array sensor to locate PD sources.Firstly,we developed an improved circular ultrasonic array sensor,thereby,we built a PD locating experimental platform in oil.Secondly,the phase mode excitation and the multiple signal classification (MUSIC) algorithms,combining with the multi-platform locating principle,were used to find direction of PD array signals and to locate the PD sources.Finally,the fast independent component analysis (FastICA) algorithm was used to de-noise the measured signals and to confirm their direction and locations.Results show that the locating accuracy of the improved circular array is better than that of traditional circular and the square array; by de-noising the array signals,the locating error is reduced to 4.9 cm which is less than 11.3 cm,the error in the case of no de-noising.Moreover,the validation of presented method is proved by a few experiments.关键词
局部放电/圆形阵列/相位模式激励/快速独立分量分析/定位/去噪Key words
partial discharge/ circle array/ phase mode excitation/ fast independent component analysis/ locating/ denoising引用本文复制引用
谢庆,程述一,律方成,侯姗姗,王成强..采用改进型圆形超声阵列传感器的油中局放定位[J].高电压技术,2013,39(5):1054-1060,7.基金项目
国家高技术研究发展计划(863计划)(2011AA05A121) （863计划）
河北省自然科学基金(E2010001703) （E2010001703）
Project supported by National High-tech Research and Development Program of China (863 Program) (2011AA05A121),Hebei Provincial Natural Science Foundation of China(E2010001703). （863 Program）
