Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

Article retrieval

文章检索

首页 >> 文章检索 >> 文章浏览排名

基于改进公垂线法的变压器局放超声定位研究

来源:电工电气发布时间:2020-02-26 14:26 浏览次数:1084
基于改进公垂线法的变压器局放超声定位研究
 
王飞龙
(内蒙古电力(集团)有限责任公司包头供电局,内蒙古 包头 014030)
 
    摘 要:方向角和俯仰角确定后,定位误差与传感器到变压器内部局放源之间的距离成正相关性。提出了一种改进的测向公垂线中点法,该方法通过模拟实验求得各传感器感应到的超声信号情况随局放源与传感器之间距离的变化曲线,测得传感器感应到的超声幅值,从而推算局放源与传感器之间的空间距离,并认为局放源在测向线公垂线上,而且局放源距测向线的距离与局放源到传感器之间的距离成正比。模拟变压器局放实验证实了该方法可以在测向线公垂线中点法的基础上进一步提高定位精度。
    关键词:传感器;改进测向线公垂线中点法;变化曲线;定位;距离
    中图分类号:TM41;TM930.12     文献标识码:B     文章编号:1007-3175(2020)02-0054-04
 
Research on Partial Discharge Ultrasonic Location in Transformer Based on Improved Common Perpendicular Line
 
WANG Fei-long
(Baotou Power Supply Bureau, Inner Mongolia Power (Group) Co., Ltd, Baotou 014030, China)
 
    Abstract: After the direction angle and the pitch angle are determined, the positioning error is positively correlated with the distance between the sensor and the partial discharge (PD) source. This paper proposed a kind of improved direction-finding common perpendicular midpoint method, obtaining the curve of the ultrasonic signal induced by each sensor changing with the distance between the PD source and the sensor by simulation experiment and measuring the sensor ultrasonic amplitude, so as to calculate the spatial distance between the PD source and the sensor. It is considered that the PD source is on the direction-finding common perpendicular line and the distance between the PD source and the direction-finding line is proportional to the distance between the PD source and the sensor. The simulation of transformers PD experiments verifies that this method could further improve the positioning accuracy on the basis of direction-finding common perpendicular midpoint method.
    Key words: sensor; improved direction-finding common perpendicular midpoint method; variation curve; location; distance
 
参考文献
[1] 李志勇, 温宗周. 变压器局部放电超声波监测系统设计与实现[J]. 西安工程大学学报,2010,24(1):71-75.
[2] 谢庆. 基于空间谱估计的变压器局放超声阵列定位方法研究[D]. 保定:华北电力大学,2010.
[3] 程述一,律方成,谢庆,等. 基于暂态对地电压和超声阵列信号的变压器局放定位方法[J]. 电工技术学报,2012,27(4):255-262.
[4] LUO Yongfen, JI Shengchang, LI Yanming. Phased ultrasonic receiving planar array transducer for partial dischargelocation in transformer[J].IEEE Transactions on Ultrasonics Ferroelectric and Frequency Control,2006,53(3),614-622.
[5] 李燕青,魏方园,王飞龙. 基于改进多平台定位原理的变压器局放超声定位研究[J]. 电测与仪表,2014,51(6):45-49.
[6] 张丽君,谢庆,李菱,等. 基于测向线公垂线中点的局部放电相控超声几何定位算法研究[J]. 高压电器,2012,48(2):30-33.