Joint Simulation of Pressurizer and Chemical and Volume Control System of PWR Based on Modelica

Abstract With the increasing emphasis on concepts such as digital reactors, accurately simulating reactors through simulation software is an inevitable goal. Pressurizer and chemical volume control systems are important equipment for maintaining reactor pressure. If some important indicators can be accurately reflected through simulation software, it will be of great significance. This article establishes the pressurizer and the purification and volume control system parts of the chemical volume control system through OpenModelica, and simulates the model under standard conditions, power increase and power decrease conditions. The analysis of the simulation results proves that the established pressurizer and chemical volume control system model has the function of stabilizing pressure and maintaining purification flow.