Ring network communication is an important technical feature of outdoor installation protection

and its reliability directly affects the performance of outdoor installation protection. This paper introduces the communication mechanism and typical implementation framework of outdoor installation protection ring network communication

and analyses the influence of typical communication exceptions such as communication interruption

code error

delay compensation anomaly and network storm on outdoor installation protection. On this basis

handling strategy for communication interrupt

error code

and delay compensation based on double-loop bidirectional data discrimination

network storm handling strategy based on message recognition and filtering are proposed

and the specific implementation scheme is given. Finally

the feasibility and effectiveness of the handling strategy are verified by experiments.