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 Synchronization technology, data storage technology, the recording acquisition unit coordination start technology, communication technology is the key technology of distributed fault recording system. In this paper, we propose a synchronization method that can be adapted to distributed fault recording system: first use the GPS second pulse signal to synchronize the sampling pulse of each recording acquisition unit, and then use the software self-synchronization algorithm to complete the synchronization of the sample sequence. The start-up method of the recording acquisition unit and the influence of this start-up method on the acquisition data window are described. Through analysis, it can be seen that the recorded data using distributed storage can ease the problem of storage capacity and time-lag of the centralized fault recording system; the communication between the primary recording station and the recording acquisition unit should be based on TCP / IP Network communication. The IP addressable distributed fault recorder system structure and prototype dynamic test results are given