Modeling and simulation of the primary circuit of the Paks nuclear power plant for control and diagnosis
Erzsébet Németh, Csaba Fazekas, Gábor Szederkényi, Katalin Mária Hangos · 2007
Two related but different dynamic simulators of the primary circuit of the Paks Nuclear Power Plant in Hungary are described in this paper that have been built from a simple dynamic model based on first engineering principles. For dynamic analysis and controller design purposes a simple continuous time discrete-continuous hybrid state-space model has been developed that is implemented in the MATLAB/SIMULINK environment. This model has been extended by the fault models of non-compensable major leaking faults, and has been discretized to obtain a discrete event system model in the form of a coloured Petri net (CPN). The CPN model has been used to verify a safety procedure that initiates the draining of the liquid in the primary circuit when a non-compensable primary-to-secondary leaking fault occurs.