A fault diagnosis method and system for a nuclear power instrumentation and control system, and a storage medium. The method comprises: acquiring measured values of a sensor under test in a nuclear power instrumentation and control system (S100); on the basis of the measured values and parameters of the nuclear power instrumentation and control system, calculating reference standard values using multiple cross-validation methods (S200); on the basis of characteristics of the measured values, comparing the measured values with the reference standard values to obtain comparison results (S300); on the basis of the comparison results and preset criteria, determining an evaluation result of the sensor under test (S400); and on the basis of the evaluation result of the sensor under test, selecting a corresponding maintenance strategy (S500). The invention achieves fault diagnosis of instrumentation and control system equipment during online operation, improves the accuracy of fault diagnosis for nuclear power instrumentation and control systems, and enables effective maintenance and management of sensors.
- 출원번호 : CN2025/110303
- 출원인 : CHINA NUCLEAR POWER OPERATIONS CO., LTD.
- 특허번호 :
- IPC : G05B-023/02(2006.01)