Abstract: Abstract:Based on analysis of thermodynamic characteristics of 600MW supercritical once through boiler unit, according to the energy conservation law, the mass conservation law and the momentum conservation law, a dynamic simulation model of 600MW supercritical once through boiler was established. Aiming at the feedwater disturbance, the power disturbance and the fuel quantity disturbance, the dynamic tests were carried out. The test results show that the model can simulate dynamic characteristics of practical unit accurately.

Key words: Keywords:once through boiler, simulation modeling, dynamic characteristics