Fault diagnosis device, system and method for Level 2 redundant devices of nuclear power plant

Abstract

The invention solves the technical problem of providing a full diagnosis system and method for states of instrument control system Level 2 redundant devices of a nuclear power plant, particularly the diagnosis method for the states after the redundant network devices unsatisfying single faults are crossed and broken. The fault diagnosis device, system and method for the Level 2 redundant devices of the nuclear power plant comprise a diagnosis server side and a diagnosis client side. The diagnosis server side comprises a host diagnosis server side and a slave diagnosis server side. The diagnosis server side comprises a diagnosis client side request processing module, a diagnosis client side request forwarding module, a module for updating device diagnosis states to a real-time database, and master and secondary diagnosis server side data alignment modules. The diagnosis client side comprises a local device state diagnosis module.

Description

technical field [0001] The invention relates to the field of network security, in particular to a diagnostic device, system and method for judging whether there is a fault in the Level 2 redundant equipment of a nuclear power plant. Background technique [0002] The Level 2 layer of the nuclear power plant is the unit supervision and control layer, including data processing functions related to the human-machine interface and process control interface. The redundant device fault diagnosis methods commonly used in the industry are mostly diagnosed by sending packets through the network. Data communication cannot be carried out between the main servers, and the specific network fault information cannot be diagnosed, which causes inconvenience to the maintenance engineers of the nuclear power plant for network maintenance. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a fault diagnosis device for Level 2 redundan...

AI Technical Summary

Problems solved by technology

The redundant device fault diagnosis methods commonly used in the industry are mostly diagnosed by sending packets through the network. Data communication cannot be carried out between the main servers, and the specific network fault information cannot be diagnosed, which causes inconvenience to the maintenance engineers of the nuclear power plant for network maintenance

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