Small-batch-size convolutional neural network based fault diagnosis system for nuclear energy production safety with big-data environment

In this paper, a novel optimized convolutional neural network with small-batch-size processing (SCNN) was proposed and assembled in the nuclear fault diagnosis system. Eleven kinds of normal and fault conditions that include the whole316 simulator sensor features were used to evaluate the performance of the proposed diagnosis system.

The application of batch normalization with SCNN significantly optimized the model validation accuracy and loss under100 epochs compared with normal operation and adding drop-out operation in same condition. Besides, outstanding diagnosis accuracy was highlighted by the comparison of traditional binary and multiple classification methods. Thisproposed diagnosis system has achieved more precise diagnosis accuracy and will provide the useful guidance to operators, assisting them to make accurate and rapid decision to ensure nuclear energy production safety.