| 一种基于TD-LTE帧同步的电网时间同步方法 |
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| 引用本文： | 张国翊,朱海龙,文安,金鑫,黄维芳.一种基于TD-LTE帧同步的电网时间同步方法[J].北京邮电大学学报,2017,40(1):117-123. |
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| 作者姓名： | 张国翊 朱海龙 文安 金鑫 黄维芳 |
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| 作者单位： | 中国南方电网电力调度控制中心,广州,510623;南方电网科学研究院有限责任公司,广州,510080 |
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| 基金项目： | 中国南方电网公司重大科技专项项目 |
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| 摘 要： | 基于分时长期演进(TD-LTE)4G无线通信技术,研究了TD-LTE帧同步工作机制,将绝对时间与TD-LTE系统同步帧结构映射,提出了一种基于TD-LTE帧同步的电网时间同步方法,设计了时延补偿机制,以修正无线传播多路径造成的时延偏差,提高授时精度.通过搭建试验平台实测分析,验证了该方法的可行性,无线授时系统的时间同步精度可达亚微秒量级,可满足配电网各类业务需求.
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| 关 键 词： | 分时长期演进 帧同步 时间同步 时延补偿 授时系统 |
Power Grid Time Synchronization Method Based on TD-LTE Frame Synchronization |
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| ZHANG Guo-yi,ZHU Hai-long,WEN An,JIN Xin,HUANG Wei-fang.Power Grid Time Synchronization Method Based on TD-LTE Frame Synchronization[J].Journal of Beijing University of Posts and Telecommunications,2017,40(1):117-123. |
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| Authors: | ZHANG Guo-yi ZHU Hai-long WEN An JIN Xin HUANG Wei-fang |
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| Abstract: | The operation and maintenance,state monitoring and failure location of all kinds of power grid distribution network service and equipment terminal depend on the precise time synchronization.In view of time division long term evolution (TD-LTE) 4G wireless network communication technology,a TD-LTE frame synchronization mechanism was studied,which uses map absolute time and TD-LTE system synchronization frame structure,and proposes a power grid time synchronization method based on TD-LTE frame synchronization.Meanwhile,a time delay compensation mechanism was designed to revise delay caused by radio propagation multi-path for improving the accuracy of timing system.Finally,the feasibility of the method proposed was verified by simulation and analysis.It is shown that the time synchronization precision of wireless time service system can reach to sub-microsecond level,which can satisfy all kinds of distribution network service demands. |
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| Keywords: | time division long term evolution frame synchronization time synchronization time delay compensation time service system |
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