基于多时源的高稳时间同步装置的研制

Development of High Stability Time Synchronization Device Based on Multi Time Source

时间同步装置作为智能变电站设备的时间同步源,对变电站各设备的正常工作具有举足轻重的作用;2016年国家电网对时同步装置提出了"四统一"要求,对装置的外观和接口进行规范,提高了授时和守时的精度,改进了多时源切换逻辑等;在此背景下,按照的国家电网的新规范要求,从硬件设计,软件开发等各方面对时间同步装置的开发提出了设计和实现方案,对时间同步的精度和稳定性提出解决方法,采用时源优先级分组策略实现多源切换,并提出恒温晶振的预热补偿机制,有效的克服晶振预热不充分带来的守时时间累积误差增大问题。

As the time synchronization source of Smart Substation equipment,time synchronization device plays an important role in the normal operation of substation equipment.In2016,the State Grid put forward the"four unification"requirement for the time synchronization device,standardized the appearance and interface of the device,improved the precision of timing and punctuality,improved the multi time source switching logic and so on.In this context,according to the new specification of the state grid,the design and implementation scheme of the hardware design,software development and other parties are put forward in the face of the development of time synchronization devices.The solution to the accuracy and stability of time synchronization is proposed.The multi source switching is realized by the time source priority grouping strategy,and the constant temperature crystal vibration is proposed.The preheating compensation mechanism effectively overcomes the problem of accumulated time error caused by insufficient preheating of crystal oscillator.