Frequency Conversion Logic Implementation and Energy-Saving Analysis of 600 MW Unit Electric Pump
In order to achieve energy conservation and consumption reduction of the unit,Fugu Power Plant carried out frequency conversion transformation on two electric pumps of Unit 2,changing from spoon tube regulation to frequency conversion regulation. Combining the correspondence between the frequency converter and the speed of the electric pump,the relationship between the feedwater main control and the frequency converter regulation command function was found to better control the feedwater. Through the start-up and variable load operation of the unit,the frequency converter control was stable,the feedwater control was stable,and the steam drum water level change met the requirements. Calculations showed that the energy-saving effect was significant and the expected goal was achieved.
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