Research and Application of Transient Satistical Method for Nuclear Power Plant

The number of transient occurrences of nuclear power plants is closely related to the fatigue life of equipment, so transient statistics are of great significance for improving the level of intelligent operation and maintenance of nuclear power plants and the renewal of operation licenses. At present, transient statistical methods at home and abroad have the disadvantages of large training data and poor generalization ability, and are rarely used in engineering. In this paper, a transient classification method based on equivalent distance measurement is established according to the design transient variation law, and the automation of transient classification, segmentation and counting process is realized. The current transient classification method is verified by the operation data of nuclear power plants, and the results show that the current method can effectively realize the statistical work of various operating transients. The application of transient statistical method plays an important role in the improvement of the intelligence level of nuclear power plants and the continuation of operation permits. © 2024 Atomic Energy Press. All rights reserved.