RTC-METHOD FOR THE CONTROL OF NUCLEAR-REACTOR POWER

In this paper, a new concept of the Reactivity Trace Curve (RTC) for r eactor power control is presented. The concept is demonstrated for a r eactor model with one group of delayed neutrons, where the reactivity trace curve is simply a closed form exponential solution of the RTC-di fferential equation identifier. An extended reactor model of multigrou p (six groups) of delayed neutrons is discussed for power control usin g the RTC-method which is based on numerical solution of the governing equation for the RTC-differential equation identifier. In this numeri cal solution, an impeded analytical solution for the RTC-identifier in every sampling time step is used. Finally, the concept is applied to a more rigorous reactor model, namely; a model of multigroup of delaye d neutrons with temperature feedback. The simulation studies for all o f the above mentioned cases demonstrate the validity of the concept fo r reactor power control with absolute elimination of power shootings.