Rapid load fluctuation adapting type water supplying flow rate control method

The invention relates to the technical field of water supplying control of supercritical units, and specifically relates to a rapid load fluctuation adapting type water supplying flow rate control method. The method is characterized in that the main steam flow rate is treated as a main input signal of water supplying control; the difference between target load of the unit and the target load afterspeed limitation, the deviation between the target main steam pressure and the actual main steam pressure, and the deviation between the target temperature and the actual temperature of an outlet ofa separator are overlapped and act on the set water supplying flow rate value; the coal quantity change and the water supplying quantity change are relatively independent; and intermediate point temperature deviation is added to correct the water supplying quantity. According to the method, sufficient water supplying flow rate and pressure are supplied by a water supplying system in running, so that the problems such as la