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Research on time synchronization technology of wind farm SCADA system

  • 2013-09-19
  • 258.29KB
  • Points it Requires : 2

In order to achieve clock synchronization of the wind farm SCADA system, a clock synchronization method based on the physical layer physical medium-independent interface is proposed. The process of achieving time synchronization between master and slave nodes in a distributed network is analyzed in detail, and a time synchronization method based on a medium-independent interface is proposed to accurately obtain the departure and arrival times of network data frames. By correcting the frequency deviation of each slave node relative to the master node, measuring the link delay by the round-trip method, and calculating the exchange delay in real time to compensate for the uncertainty of the exchange delay, high-precision time synchronization from the master node to the slave node is achieved. Experiments have shown that open-loop time transfer based on a medium-independent interface can achieve high-precision clock synchronization of 25ns.

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