Nuclear power plant double-unit digital instrument control verification system and method

Abstract

The invention discloses a nuclear power plant double-unit digital instrument control verification system and method. The nuclear power plant double-unit digital instrument control verification systemcomprises a simulation model layer, a control logic layer and a man-machine interface layer, wherein the simulation model layer simulates the operation of a nuclear power plant unit based on an operation instruction and generates operation data, and the simulation model layer comprises a simulation nuclear power plant first simulation model server and a simulation nuclear power plant second simulation model server; the control logic layer receives an operation instruction sent by the man-machine interface layer, accesses the simulation model layer, and carries out corresponding service logic processing in response to the operation instruction; the service logic processing includes calculation and analysis of working conditions of first and second units of the nuclear power plant in real time based on the operation data, measurement of the working condition deviation, correction of DCS configuration logic and parameters, and generation of a nuclear power plant unit operation control instruction based on the corrected DCS configuration logic and parameters; and the man-machine interface layer sends the operation instruction to the control logic layer and receives a processing resultreturned by the control logic layer. The nuclear power plant double-unit digital instrument control verification system has the advantages that the maintenance efficiency of the instrument control system is improved, and an operation platform for skill training is provided for DCS operation and maintenance personnel of a nuclear power plant.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant control, and in particular relates to a nuclear power plant dual-unit digital instrument control verification system and a method thereof. Background technique [0002] Due to the advantages of reliability and stability, DCS system has been widely used in nuclear power plants in recent years. However, there are many test blind spots in the DCS system during factory testing and on-site debugging, and it is impossible to completely cover and test system defects. The defects of the DCS system itself and the blind spots of the operation and maintenance personnel's cognition of the DCS system may cause some common operational events in the DCS operation and maintenance process, and in severe cases, it will cause unplanned shutdown. In recent years, there have been many unplanned outages in nuclear power plants of China National Nuclear Corporation. Through analysis, most of the reasons are...

AI Technical Summary

Problems solved by technology

For the outage unit, during the overhaul period, the equipment of the important system will be started, stopped and other maintenance operations. If there is a potential defect in the DCS system, the control command will be sent to the operating unit by mistake. In severe cases, it will cause shutdown or even shutdown.