Nuclear power unit safety level DCS network structure

Abstract

The invention provides a nuclear power unit safety level DCS network structure, and belongs to the technical field of nuclear power station safety protection. The system comprises a man-machine data bus, a safety bus and a safety system bus which form a looped network, and a nuclear power unit safety level DCS is arranged in the looped network; arrangement positions of the nodes in the man-machinedata bus, the arrangement positions of the nodes in the safety bus and the arrangement positions of the nodes in the safety system bus meet the conditions that the arrangement nodes of the multiple sub-cabinets with the same panel table are adjacent, and the arrangement nodes of the multiple sub-cabinets with the same power supply are adjacent. The influence on other equipment of the safety-levelDCS when the sub-cabinets with the same panel table and the same power supply are powered off or maintained off the network can be avoided to the greatest extent. The debugging and overhauling work efficiency and debugging efficiency of the safety-level DCS are improved, and the debugging period is shortened; and the influence range of single control station or single-row control cabinet shutdownmaintenance is reduced, and the maintainability and reliability of the system are improved.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant safety protection, in particular to a nuclear power unit safety level DCS network structure. Background technique [0002] As an important part of the nuclear power plant DCS system, the safety-level DCS of nuclear power units has realized the functional control of the safety-level and safety-related systems of nuclear power units. (ESFAC), Special Safety Facility Automatic Test Cabinet (ESFAT), Data Transmission Cabinet (DTC), Digital Safety Related Cabinet (SRC1-3), Analog Safety Related Cabinet (SRC4), Equipment Interface Cabinet (CIC), stack Core cooling monitoring system (CCMS), safety control display device (SCID), safety alarm cabinet (APC), gateway (GW), post-accident monitoring system (PAMS), etc.; each functional module includes multiple sub-cabinets, all Information exchange between sub-cabinets realizes functions such as control, display, and logic processing of safety-lev...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at setting multiple functional modules in different areas, and the number of sub-cabinets is large, and the layout is not reasonable enough. When an accident occurs in a certain functional module or sub-cabinet or the power is cut off for maintenance, it will affect the data communication of the entire system. , providing a safety-level DCS network structure for nuclear power units

Images