Nuclear power security system based on fast looped network protection protocol

The embodiment of the utility model provides a nuclear power security system based on a rapid looped network protection protocol. The nuclear power security system comprises a factory looped network domain and a living quarter looped network domain, wherein the factory looped network domain is a main ring of the Ethernet ring; wherein the living quarter looped network domain is a sub-ring of the Ethernet; wherein each of the factory looped network domain and the living area looped network domain comprises a main node and a plurality of sub-nodes; wherein the main nodes and the branch nodes inthe factory looped network domain and the living area looped network domain are respectively connected in sequence to form a ring; the sub-nodes are used for shooting video monitoring videos and sending the shot video monitoring videos to the main node in the ring network domain where the sub-nodes are located; and the main node is used for receiving and storing the video monitoring records sent by the sub-nodes. The syst