特高压输电线舞动监测技术研究  

Research on Galloping Monitoring Technique for UHV Transmission Line

作　　者：曹海林[1] 杨力生[1] 杨士中[1,2] 王韬[1] 应伟兵[1] 管伟[1] 

机构地区：[1]重庆大学通信与测控中心,重庆400030 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《高电压技术》2011年第9期2111-2118,共8页High Voltage Engineering

基　　金：输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709101);重庆市科委自然科学基金(CSTC2010BB2243);中央高校基本科研业务费资助项目~~

摘　　要：针对现有输电线舞动测量精度不高、数据传输量过大等局限性,在现有微位移测量的微波比相测距技术工作的基础上,提出了1种基于智能天线、扩频技术的特高压输电线舞动监测方案,并对系统的工作原理进行了详细阐述。方案中智能天线对安装在特高压输电线上的多个无线电信标的空间角、距离信息进行监测,利用角度和距离信息计算获得特高压输电线舞动量。针对多信标的空间角估计需求,提出了1种基于平面阵的酉-旋转不变参数估计的改进算法,并对算法进行了仿真分析。仿真结果表明,提出的算法可以精确估计信标的角度信息,结合微波比相测距技术得到的距离信息,可对特高压输电线舞动进行高精度实时监测。Considering the shortcoming of existed galloping measuring systems,including lack of accuracy and heavery load of data transmission.We proposed a galloping monitoring system for ultra-high voltage transmission line by the smart antenna and spread spectrum technique,and analyzed the working principle of the system in detail,in which the directions and ranges of the beacons,equipped on the ultra-high voltage transmission line,are monitored by the antenna array.The galloping of the ultra-high voltage transmission line is calculated with these directions and ranges information.According to the multiple beacons telemetry,a two-dimensional spread spectrum unitary estimation of signal parameter via rotational invariance technique algorithm is proposed and numerically simulated.The simulation results show that this system can estimate the direction information of the beacons accurately,combined with the distance information gathered by the microwave phase-comparing range measuring technology,the galloping of ultra-high voltage transmission line can be real-time monitored with a high accuracy.

关 键 词：舞动 特高压 输电线 智能天线 扩频 信标 

分 类 号：TM754[电气工程—电力系统及自动化]