Abstract:The coordinated control system of traditional thermal power plant is difficult to meet the requirements of power grid under new circumstances. In order to make an analysis and optimization of the system,a load pressure mathematical model of unit should be established.Taking the 2×330MW units of the first phase of Huadian Luohe Power Generation Company Limited as examples,this paper established the mathematical model of units on the basis of mechanism analysis, and confirmed the model parameters according to the historical data and the results of dynamic test. In addition,a simplified model was also built for the distributed control systems of objected units.Through comparing the model results with actual operation data of units,it was proved that the model has good accuracy and reproducibility.The establishment of unit model could lay a good foundation for the future application of advanced control algorithm.

Keywords:coal fired power unit, mechanism analysis, experimental modelling, model parameter