Digital improved verification system for analog control system of nuclear power plant

Abstract

The invention provides a digital improved verification system for an analog control system of a nuclear power plant. The system includes a simulation system body, an analog meter control system body,and a digitalizer control system body; the simulation system body is used for analogue simulation of real-time operation state of the nuclear power plant, the analog meter control system body is connected with the simulation system body and used for using the simulation system body as a control object and implementing various logic control functions in an analog control mode, and the digitalizer control system body is connected with the simulation system body and used for using the simulation system body as the control object, implementing various logic control functions same as these of the analog meter control system body in an analog control mode, and verifying the equivalence between the digital logic control functions and the corresponding logic control functions in the analog meter control system body. The system has the advantages that it can be ensured that the digital control system retains the functions and performance of an original simulation system after digital improvement.

Description

technical field [0001] The invention relates to the technical field of instrument control, in particular to a verification system for digital improvement of a nuclear power plant analog control system. Background technique [0002] Simulator control system for nuclear power plants (such as Daya Bay Nuclear Power Plant, Ling Ao Phase I Nuclear Power Plant), mainly composed of component-assembled analog devices and relays, supplemented by a small amount of programmable logic controller (PLC) and Solar computer-based monitoring System (KIT / KPS), steam turbine control system (GRE). Since these power plants were put into commercial operation, their main instrument control systems and equipment based on analog technology have faced increasingly severe challenges in terms of equipment failure, equipment aging, spare parts supply, maintenance costs, etc., and even affected the safety and stability of nuclear power plants. ,Economic Operation. In addition, the instrument control sy...

AI Technical Summary

Problems solved by technology

[0004] With the increase of unit running time and considering the development of instrument control technology, the control technology based on analog boards and relays has been gradually eliminated, and the procurement of spare parts will become increasingly difficult, which will affect the operating status of the unit and equipment. Maintenance is a technical and economical double burden

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