Modeling and simulation of pressurizer dynamic process in PWR nuclear power plant

By analysis of the actual operating characteristics of pressurizer in pressurized water reactor(PWR) nuclear power plant and based on some reasonable simplification and basic assumptions,the quality and energy conservation equations about pressurizer's steam zone and the liquid zone are set up.The purpose of this paper is to build a pressurizer model of two imbalance districts.Water level and pressure control system of pressurizer is formed though model encapsulation.Dynamic simulation curves of main parameters are also shown.At last,comparisons between the theoretical analysis and simulation results show that the pressurizer model of two imbalance districts is reasonable.