分布式故障录波系统

同步技术、数据存储技术、各录波采集单元协调启动技术、通信技术等是分布式故障录波系统的关键技术。文中提出了一种可以适应于分布式故障录波系统的同步方法：先利用GPS的秒脉冲信号同步各个录波采集单元的采样脉冲，再采用软件自同步算法完成采样值序列的同步。阐述了录波采集单元的启动方法和这种启动方法对采集数据窗的影响。通过分析可以看出，录波数据采用分布式存储可以缓解集中式故障录波系统存储容量和转发时间紧张的问题；录波主站与录波采集单元之间的通信方式应采用基于TCP/IP的网络通信。给出了IP编址的分布式故障录波系统结构和样机的动模试验结论。

DISTRIBUTED FAULT RECORDING SYSTEM

The synchronizing technology,data storing technology,the technology of coordinated start of record- collecting units and communicating technology are key technologies to a recording system . A synchronizing method adapted to the distributed fault recording system is proposed which consists of synchronizing the sampling pulses of various record- collecting units by m eans of the pulse signals per second of GPS followed by the synchronization of the sequence of sam pled values by adopting the software auto- synchronizing algorithm.The method of starting the record- collecting unit and the effect of such a starting method on the data collecting window are discussed.It can be seen from analysis thatthe adoption of the distributed storage for recorded data can solve the problem of insufficient storing capacity of the concentrated fault recording system and the pressing time for retransm ission.It is proposed that the TCP/ IP- based network com munication should be adopted as the mode of com munication between the m aster recording station and record- collecting units. Presented in this paper are the construction of the IP addressing distributed fault- recording system and conclusions about dynam ic analog tests on a prototype.