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Research of Testing Technology of Distributed Safety and Stability Control System

The large-scale security control system involves multiple stations and cross regions. When testing security control stations of different scales at the same time, there are high requirements for communication data bandwidth, signal strength, control distance and communication delay. AS6802 defines a deterministic, high fault tolerance and non-blocking communication synchronization technology. The fault tolerance of the clock synchronization of the security control test system is enhanced by using the unique synchronous handshake system of AS6802 protocol standard to synchronize with the existing Ethernet time. Through simulation analysis, it is verified that the scheme is more flexible to receive and send Ethernet frame data, reduces dynamic delay, and its synchronization accuracy fully meets the requirements of distributed testing.