变电站环境下GNSS接收机性能及观测数据质量分析

Analysis on GNSS receive performance and observation data quality in substation environment

摘要: 为了研究变电站强电磁环境对全球卫星导航系统（GNSS）接收机工作性能及观测数据质量影响,分别在500 kV、220 kV、110 kV变电站主控楼楼顶布置测试站点,并用GNSS接收机连续观测24小时．通过接收机内部噪声和数据完整率、信噪比(SNR)、多路径效应等综合评估变电站对GNSS接收机工作性能及观测数据质量的影响．实验结果表明:变电站强电磁环境下GNSS接收机能正常工作,且未对观测数据质量产生显著影响,观测数据质量满足相应标准.

Abstract: In order to study the impact of strong electromagnetic environment of the substation on performance of the GNSS receiver and quality of observation data,GNSS receivers were arranged on the roof of main control building of the 500 kV, 220 kV and 110 kV substation respectively to observe continuously for 24 hours. The impact of substation on performance of the GNSS receiver and the quality of the observation data is comprehensively evaluated through internal noise of the receiver,data integrity rate, signal-to-noise ratio, and multipath effects. The experimental results show that the GNSS receiver can work normally under strong electromagnetic environment of the substation, and the substation does’t have significant impact on quality of observation data.The quality of observation data meets the corresponding standards.