Simulation on The Boundary Control of Steam Test Based on Jtopmeret

Steam system is an important part of nuclear power plant. And test method is usually required to verify the system technical plan during the design stage. For effective simulation of steam export features at steam generator secondary side under dynamic conditions in a large-scale steam test project, two boundary control schemes of PID closed-loop and open loop were proposed. A simulation model of the test system was established using the two-phase modeling tool JTopmeret. In the early stage of the test, the simulation model was optimized and verified based on system thermal test data, and the accuracy and reliability of the simulation model were confirmed. Based on the revised simulation model, two boundary control schemes were compared. The open loop control scheme with better outcomes was confirmed as the control scheme of the final test. The simulation results provided effective guidance for the final test, as well as strong support for the successful accomplishment of the test.