智能电网高精度时间同步方法

摘要

根据智能电网对时间同步要求高精度和高安全性的原则,对智能电网时间同步方案进行研究.采用北斗/GPS双模授时和IEEE 1588协议相结合的电力系统时间同步技术,根据运行模式和授时精度的不同分别给出适用于主站、子站的不同时间同步配置方案,从而实现整个智能电网的时间同步.并对时间同步系统的误差进行分析与讨论,根据主、从时钟同步误差提出基于闭环控制的晶振补偿方法,有效地提高了广域网时间同步精度.%In order to satisfy the high precision and high security requirements of time synchronization for Smart Grids, a time synchronization system is proposed in this paper, which is based on the Bei-Dou/GPS dual-mode timing and IEEE 1588 protocol. According to different operation modes of the system, different time synchronization schemes are presented for master stations and sub-stations. And their time synchronization errors are discussed, the closed loop control method of crystals compensation is also proposed, the efficiency and precision of the time synchronization are improved.