Application of Control Process Variables for Cyber Attack Detection and Diagnosis in NPPs

摘要

In order to detect cyber attacks that modulate control signals without any cyber-dimensional symptoms, a control dynamics-based detection system is developed. The detection system consists of the Kalman filter based estimation block and decision block. The validity of the developed detection system was proved by conducting a case study on one of non-safety systems in NPPs. The developed control dynamic-based detection system is not only efficient in terms of memory usage, but also, has smaller computational demands [4]. This efficiency makes it suited to the nuclear I&C field where modifications on the existing system design should be minimized and the time-synch requirement is strict.