基于磁场传感与北斗定位的采空区输电杆塔倾斜预警方法  

Early Warning Method of Transmission Tower Inclination in Goaf Based on Magnetic Field Sensing and Beidou Positioning

作　　者：宰红斌 韩海安 上官明霞 单荣荣[3] ZAI Hongbin;HAN Haian;SHANGGUAN Mingxia;SHAN Rongrong(Operation and Maintenance Department,State Grid Jincheng Power Supply Company,Jincheng 048000;Department of Science and Technology,State Grid Shanxi Electric Power Company,Taiyuan 030021;NARI Technology Development Co.,Ltd.,Nanjing 211106)

机构地区：[1]国网晋城供电公司运维检修部,晋城048000 [2]国网山西省电力公司科技部,太原030021 [3]国电南瑞科技股份有限公司,南京211106

出　　处：《电气工程学报》2020年第3期44-49,共6页Journal of Electrical Engineering

基　　金：国家重点研发计划(面向新型城镇的能源互联网关键技术及应用)资助项目(2018YFB0905000)。

摘　　要：现有采空区输电杆塔倾斜监测预警方法存在监测实时性弱、准确度低、受单一参数影响的缺陷。针对这一问题,提出一种基于磁场传感与北斗定位的采空区输电杆塔倾斜监测与预警方法。首先,建立采空区输电杆塔的磁场传感模型,计算输电线磁通密度。然后,结合北斗卫星定位技术,基于双因素分级叠合的方法,在监测杆塔运行状态的同时判断杆塔倾斜危险性程度等级。最后,通过三种故障情况下的算例结果表明,与传统的依靠单一手段进行输电杆塔状态监测预警的方法相比,所提方法的预测准确度平均提升了8.66%以上,故障反应速度平均提升了38.01%以上,从而验证了所提方法的有效性与优异性。The existing monitoring and early-warning methods of transmission tower tilting in goafs have the shortcomings of weak real-time monitoring,low accuracy,and affected by a single parameter.Aiming at this problem,a tilt monitoring and early warning method for transmission towers in mined-out areas based on magnetic field sensing and Beidou positioning is proposed.First,a magnetic field sensing model of a transmission tower in a goaf is established,and the magnetic flux density of the transmission line is calculated.Then,combined with Beidou satellite positioning technology,based on the two-factor hierarchical superposition method,the tower’s tilting danger level is determined while monitoring the operating status of the tower.Finally,the calculation results of the three kinds of fault situations show that compared with the traditional method of relying on a single method for the monitoring and early warning of transmission tower conditions,the accuracy of the proposed method has increased by an average of 8.66%or more,and the reaction speed of faults has increased on average.It is more than 38.01%,which verifies the effectiveness and superiority of the proposed method.

关 键 词：采空区 输电杆塔 磁场传感 北斗定位 倾斜监测 故障预警 

分 类 号：TM75[电气工程—电力系统及自动化]