基于SBAS技术的输电线路地表形变监测  

Surface deformation monitoring of transmission lines in power grid based on SBAS technology

作　　者：马仪 耿浩 黄然 张辉 马御棠 刘靖 MA Yi;GENG Hao;HUANG Ran;ZHANG Hui;MA Yutang;LIU Jing(Joint Laboratory of Power Remote Sensing Technology(Electric Power Research Institute, Yunnan Power Grid Company ltd.),Kunming 650217,China;Yunnan Power Grid Company Ltd.,Kunming 650000,China;Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)

机构地区：[1]电力遥感技术联合实验室(云南电网有限责任公司电力科学研究院),昆明650217 [2]云南电网有限责任公司,昆明650000 [3]北京空间飞行器总体设计部,北京100094

出　　处：《测绘工程》2022年第2期46-52,58,共8页Engineering of Surveying and Mapping

摘　　要：地质灾害对输电杆塔和电网系统运行带来安全隐患,人工巡查无法及时发现地表缓慢形变导致的杆塔形变,且巡查效率低,成本高。为解决地质形变给输电线路带来的威胁,需监测输电线路沿线的地表形变。基于Sentinel-1A卫星数据,以SBAS-InSAR为技术手段,对RT甲、乙线和YF直流线沿线实现周期性、低成本和高精度的形变监测,并分析监测结果,提供输电线路维护建议,以消除输电杆塔因地表形变导致的杆塔形变威胁。Yunnan has complex terrain and frequent geological disasters.The power transmission network is widely distributed in the province,and the transmission lines are vulnerable to geological disasters or geological movements.Geological disasters bring security risks to the operation of transmission towers and power grid system.Manual inspection can not find the tower deformation caused by slow ground deformation in time,and the inspection efficiency is low and the cost is high.Based on Sentinel-1A satellite data and SBAS-InSAR technology,this paper proposes periodic,low-cost and high-precision deformation monitoring along Rentong line A,B and Yongfu DC line of Yunnan power grid,analyzes the monitoring results,and provides suggestions for transmission line maintenance,to eliminate the threat of transmission tower deformation caused by ground surface deformation.

关 键 词：SAR SBAS-InSAR技术 地表形变 哨兵1A 

分 类 号：P237[天文地球—摄影测量与遥感]