Research on fault simulation and fault diagnosis of electric gate valves in nuclear power plants

Electric gate valve failure is a common type of fault in nuclear power plants. Among all factors leading to reactor shutdown in nuclear power plants, valve failures account for a significant proportion. Due to the difficulty in obtaining valve failure data in nuclear power plants, to effectively obtain such data and provide data support for the development of subsequent fault diagnosis algorithms, this paper adopts an experimental research method. It designs and constructs an electric gate valve failure simulation test bench, obtains experimental data under various states of electric gate valves, and develops a fault diagnosis system for electric gate valves in nuclear power plants based on this. The experimental results show that the data generated in this experiment can well achieve the purpose of classifying valve failure types and evaluating the degree of failure. Moreover, the developed fault diagnosis system exhibits high diagnostic accuracy and low error in evaluating the degree of failure.