基于BDS3的高精度授时在智能电网的应用  

A Novel BDS3 Timing Algorithm Application in Smart Grid

作　　者：任烨 吕心力 田永和 曹辉 杨少东 REN Ye;LYU Xinli;TIAN Yonghe;Cao Hui;YANG Shaodong(Tianjin University,Tianjin 300072,China;Zhejiang Saisi Electronic Technology Co.,Ltd.,Jiaxing 314006,Zhenjiang,China)

机构地区：[1]天津大学,天津300072 [2]浙江赛思电子科技有限公司,浙江嘉兴314006

出　　处：《电力大数据》2023年第12期46-53,共8页Power Systems and Big Data

摘　　要：时间同步技术是智能电网运行的关键技术之一。针对智能电网中传统卫星授时带来的可靠性低和授时性能不稳定的问题,本文分析了基于北斗三代系统(BDS3)的高精度授时算法引入的新误差,即多频点观测噪声和载波相位的“天跳”,并针对这两个误差分别建立了高度角归类伪距测量噪声修正算法和基于先验模糊度不变的“天跳”消除算法的修正模型,然后,提出了一种基于序贯最小二乘的无电离层组合授时算法。实验测试分析显示,本文提出的高精度授时算法在授时性能上提升了约15%。Time synchronization technology is one of the key technologies of smart grid operation.In order to solve the problems of low reliability and unstable time service performance caused by traditional satellite timing in smart grid,this paper first establishes a ionospheric free combined BDS3timing algorithm based on sequential least squares.At the same time,two errors,the multi frequency observation noise and the"day-boundary jump"of the carrier phase,are identified in the algorithm.For these two errors,the correction models of the"day-boundary jump"elimination algorithm based on the invariable a priori ambiguity and the pseudo range measurement noise correction algorithm based on altitude angle classification are established respectively.The experimental test and analysis show that the ionospheric free combined BDS3 timing algorithm based on sequential least squares proposed in this paper,compared with the classic satellite timing method,has significantly improved about 15%。

关 键 词：北斗三代 载波相位 天跳 多径误差 序贯最小二乘 智能电网 

分 类 号：P228[天文地球—大地测量学与测量工程]