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随着数字化变电站的发展,变电站设备在线监测系统的未来发展趋势是采用IEC 61850实现无缝通信,由于空间距离和节点的变化,使现场采样值传输的同步精度变成一个难题。以IEEE 1588标准中的精确时间协议(PTP)为基础,通过使用整合IEEE 1588标准中核心部分的以太网物理层控制芯片DP83640,使得采用以太网架构的分布式变电站设备在线监测系统主从节点上的时钟达到精确的时间同步,同时缩短了设计周期。
With the development of digital substations, the future trend of substation equipment on-line monitoring system is to adopt IEC 61850 to realize seamless communication. Due to the change of spatial distance and nodes, the synchronization precision of on-site sampling value transmission becomes a difficult problem. Based on the accurate time protocol (PTP) in the IEEE 1588 standard, the DP83640, an Ethernet physical layer control chip that integrates the core part of the IEEE 1588 standard, is adopted to make the distributed substation equipment on-line monitoring system master-slave nodes with an Ethernet architecture Of the clock to achieve accurate time synchronization, while shortening the design cycle.