Study on the Dynamic Response Characteristics of Thermal Power Unit Primary Frequency Regulation under Condenser Water Level Disturbance

In this paper, Dymola software is used to establish a dynamic thermal model of a 600MW supercritical reheat unit, and the steam temperature control system and water level control system are added to the model to study the influence of different water level disturbances on the mass flow rate and output power of condensate, and the response results of unit parameters under different loads are compared and analyzed. The results show that under the same operating load, the greater the water level disturbance of the condenser, the greater the increment of the output power of the corresponding unit. Under different operating loads, under the same condenser water level disturbance, the output power increment of the unit is different due to the same condenser water level disturbance, the dynamic response results of the unit during higher load operation are better than the dynamic response results of the unit under lower load operation.