基于连续波SAR成像模型的输电线路悬垂绝缘子风偏角识别方法  

Identification Method of Wind Deflection Angle of Transmission Line Suspension Insulators Based on Continuous Wave SAR Imaging Model

作　　者：李萍 LI Ping(College of Electrical and Information Engineering,Heilongjiang Institute of Technology,Harbin 150001,China)

机构地区：[1]黑龙江工程学院电气与信息工程学院,黑龙江哈尔滨150001

出　　处：《测试技术学报》2024年第1期41-47,共7页Journal of Test and Measurement Technology

摘　　要：为了在恶劣环境中保证输电线路悬垂绝缘子风偏角识别结果可信,提出基于连续波合成孔径雷达(SAR)成像模型的输电线路悬垂绝缘子风偏角识别方法。基于连续波SAR成像模型,持续发射脉冲信号,通过基于位置标定的绝缘子风偏角识别方法,定位绝缘子目标区域中绝缘子串2个端点的像素坐标,生成绝缘子SAR图像。采用基于改进频率变标算法的连续波SAR成像处理方法,缓解绝缘子SAR图像失焦现象,进行SAR图像分割,获取生成绝缘子SAR图像中绝缘子目标区域,并结合“两点确定一条直线”标准识别绝缘子串的风偏角。实验验证:所提方法在恶劣环境中像素拟合效果较佳,对绝缘子风偏角识别结果和实际风偏角的风偏度信息高度匹配。In order to ensure the reliability of the wind deflection angle identification results of suspension insulators on transmission lines in harsh environments,a wind deflection angle identification method of suspension insulators on transmission lines based on continuous wave SAR imaging model is proposed.Based on the continuous wave SAR imaging model,the pulse signal is continuously transmitted,and the pixel coordinates of the two ends of the insulator string in the insulator target area are located through the identification method of the wind deflection angle of the insulator based on the position calibration,and the insulator SAR image is generated.The continuous wave SAR imaging processing method based on the improved frequency scaling algorithm is used to alleviate the defocus phenomenon of the insulator SAR image,and the SAR image is segmented.Acquire the insulator target area in the generated insulator SAR image,and identify the wind deflection angle of insulator string based on the standard of“two points determine a straight line”.Experimental results show that the proposed method highly matches the wind deflection information of the actual wind deflection angle with the identification results of the wind deflection angle of the insulator in a harsh environment.

关 键 词：连续波 SAR成像模型 输电线路 悬垂绝缘子 图像分割 风偏角识别 

分 类 号：TM85[电气工程—高电压与绝缘技术]