基于北斗地基增强系统的输电线路舞动监测系统

Transmission Line Galloping Monitoring System Based on Beidou Ground-based Augment System

导线舞动是造成输电线路故障的主要因素之一,随着电网设备状态评价与检修的深入开展,迫切需要对导线摆动参数、舞动轨迹等信息进行实时采集,以实现舞动危险的量化评估、趋势预警、防灾治理。文章利用我国自主建设的北斗卫星导航系统,首先提出了一种基于北斗地基增强系统的广域输电线路舞动监测方法,采用了单频动态后处理技术(PPK),实现了全网同频监测下的导线舞动轨迹点输出;其次结合理论环境测试试验和实地化应用验证,分析了监测方法的可行性及轨迹精度性能,为舞动机理研究和舞动治理提供可靠的技术支撑。

Conductor galloping is one of the main factors causing transmission line fault.With the further progress of power grid equipment condition evaluation and maintenance,it is urgent to collect some relevant information on conductor galloping parameters and trajectory in real time,thereby enabling the quantitative evaluation,trend early-warning and disaster prevention and control of galloping risk.First,using Beidou satellite navigation system established by China,this paper proposes a method for monitoring the wide-area power transmission line galloping based on Beidou ground-based augment system.Then,with the single-frequency PPK dynamic post-processing technology,the output of conductor galloping trajectory points under the same frequency monitoring of the whole network is realized.Finally,in combination with theoretical environment test and real application verification,the feasibility of this monitoring method as well as trajectory accuracy property is explored,the presented work provides a reliable technical support for the study on galloping mechanism and galloping control.