Typical fault modeling and simulation of secondary circuit system of nuclear power plant

The nuclear power plant experiences a high failure rate due to the prolonged exposure to complex and harsh environments of high temperature and high pressure. In this paper, typical faults of the secondary circuit system of nuclear power plants are studied, and Simulink is used to establish simulation models of the secondary circuit steam generator, turbine generator, condenser, and feed water pump. By injecting typical faults, the anti-interference ability of the secondary circuit system is analyzed, and the reaction behavior of the nuclear power plant under various abnormal conditions is better predicted. In this paper, the effectiveness and practicability of the proposed fault model are verified through detailed simulation experiment design and data analysis, providing a new approach and method for fault diagnosis and prevention in nuclear power plants.