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

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基于改進公垂線法的變壓器局放超聲定位研究

來源:電工電氣發布時間:2020-02-26 14:26 瀏覽次數:585
基于改進公垂線法的變壓器局放超聲定位研究
 
王飛龍
(內蒙古電力(集團)有限責任公司包頭供電局,內蒙古 包頭 014030)
 
    摘 要:方向角和俯仰角確定后,定位誤差與傳感器到變壓器內部局放源之間的距離成正相關性。提出了一種改進的測向公垂線中點法,該方法通過模擬實驗求得各傳感器感應到的超聲信號情況隨局放源與傳感器之間距離的變化曲線,測得傳感器感應到的超聲幅值,從而推算局放源與傳感器之間的空間距離,并認為局放源在測向線公垂線上,而且局放源距測向線的距離與局放源到傳感器之間的距離成正比。模擬變壓器局放實驗證實了該方法可以在測向線公垂線中點法的基礎上進一步提高定位精度。
    關鍵詞:傳感器;改進測向線公垂線中點法;變化曲線;定位;距離
    中圖分類號:TM41;TM930.12     文獻標識碼:B     文章編號: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
 
參考文獻
[1] 李志勇, 溫宗周. 變壓器局部放電超聲波監測系統設計與實現[J]. 西安工程大學學報,2010,24(1):71-75.
[2] 謝慶. 基于空間譜估計的變壓器局放超聲陣列定位方法研究[D]. 保定:華北電力大學,2010.
[3] 程述一,律方成,謝慶,等. 基于暫態對地電壓和超聲陣列信號的變壓器局放定位方法[J]. 電工技術學報,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,魏方園,王飛龍. 基于改進多平臺定位原理的變壓器局放超聲定位研究[J]. 電測與儀表,2014,51(6):45-49.
[6] 張麗君,謝慶,李菱,等. 基于測向線公垂線中點的局部放電相控超聲幾何定位算法研究[J]. 高壓電器,2012,48(2):30-33.

 

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