To ensure the stability of the power communication system

the strategies for improving small granularity slicing and constant bit rate(CBR)business that based on flexible Ethernet(FlexE)/slicing packet network(SPN)devices are proposed.This strategy establishes a framework for slicing packet network that supports small granularity slicing together with a protection switching approach.At the same time

in order to ensure the adaptability of high-isolation Ethernet for the power systems

the Operation Administration and Maintenance(OAM)configuration process for Ethernet is optimized.Furthermore

to address the issue of clock jitter

a clock recovery method based on the improved direct digital frequency synthesizer is proposed.Experimental analysis shows that when the byte size is 200 B

the latency of network devices based on EoFgu-CBR is 117 μs

which is lower than that of devices from other manufacturers.This indicates that the proposed strategy for small granularity slicing and CBR business based on FlexE/SPN devices can effectively guarantee the real-time performance of power system communications.