Ratio control with logarithmic logics in a new P&P control algorithm for a true fuel-efficient reactor Online publication date: Tue, 13-Feb-2007
by Shantanu Das, Bibhuranjan Basudeb Biswas
International Journal of Nuclear Energy Science and Technology (IJNEST), Vol. 3, No. 1, 2007
Abstract: The concept of expending minimum control energy while stabilising or manoeuvring reactor power for a nuclear reactor is the key for a fuel-efficient reactor control. This concept results from treating the reactor close to its natural characteristics by a new Power and Period (P&P) control scheme. This is proven by spending only the required rate of reactivity (not more) to govern the power by setting together a power error and period error, thus through the characteristic reactor equation (inverse-hour rule), defining the absolute step reactivity required at each power points. However, the use of logarithmic logic, in the new P&P method does add another concept of ratio control, where the effective power error is generated by ratio of demanded power exponential to the observed power exponential curves. This method indeed thus compares the shape of the exponential curve demanded with the observed trajectory, thus close to physics.
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