Self-stability analysis of pressurized water reactors through shifted-ectropy based approach

After the Fukushima accident, safe, stable and efficient operation of nuclear reactors is necessary for the development of nuclear power industry. Since pressurized water reactor (PWR) is the mostly widely used fission reactor, the improvement of its operation performance is quite meaningful. Self-stability is the most important dynamic feature of any reactors, and analyzing the self-stability can give the approach of improving the operation performance. With this in mind, the self-stability analysis of the PWR is presented based on the shifted-ectropy based approach, and a sufficient condition for the globally asymptotic self-stability is established. The correctness of the theoretic result is finally verified through numerical simulation.