基于声成像技术的GIS击穿放电点定位方法  

Location method of GIS breakdown discharge point based on acoustic imaging technology

作　　者：田昊洋 任茂鑫 曹培 徐鹏 张今朝 TIAN Haoyang;REN Maoxin;CAO Pei;XU Peng;ZHANG Jinzhao(Electric Power Research Institute of State Grid,Shanghai Municipal Electric Power Company,Shanghai 200437,China;R&D Department,Shanghai Rhythm Electronic Technology Co.,Ltd.,Shanghai 200237,China)

机构地区：[1]国网上海市电力公司电力科学研究院,上海200437 [2]上海睿深电子科技有限公司研发部,上海200237

出　　处：《沈阳工业大学学报》2023年第6期649-655,共7页Journal of Shenyang University of Technology

基　　金：国家自然科学基金项目(51875361);国网上海市电力公司科技项目(520940190075)。

摘　　要：针对常规检测方法在气体绝缘组合电器击穿点定位的局限性,采用基于波束形成的声成像技术对GIS击穿放电点进行定位。通过研究可控响应功率的波束形成技术,利用互相关函数进行延时估计,并结合相位加权算法进行滤波处理,从而得到了一种具有更强抗噪性和抗混响能力的击穿点定位方法。实验结果表明,所提方法对GIS击穿点的综合定位误差约为4.79%,具有更高的鲁棒性。在放电点位置和传感器位置发生变化的情况下,该方法的平均定位误差约为4.57%,定位精度高于95%。Aiming at the limitation of conventional detection methods in locating the breakdown points of gas insulated switchgear,the acoustic imaging technology based on beamforming was used to locate the breakdown points of GIS.By studying the beamforming technology of steered response power,the generalized cross-corelation function was used to estimate the delay.Through adopting the phase transformation weighting algorithm for filtering,a breakdown point location method with stronger anti-noise and anti-reverberation ability was obtained.The experimental results show that the comprehensive positioning error of the as-proposed method is about 4.79%with higher robustness.When the discharge point position and sensor position change,the average positioning error of the method is about 4.57%,and the positioning accuracy is higher than 95%.

关 键 词：气体绝缘组合电器 击穿点定位 声成像 可控响应功率 波束形成 相位变换 鲁棒性 传感器阵列 

分 类 号：TM470[电气工程—电器]