| View of the current national energy shortage and in response to the national energy-saving emission reduction policy. Condensate extraction pump frequency converter of the once project to two 600MW units of The Daihai Power were changed.The main body of Frequency as "one drag two" approach to control the basic method as follow:frequency operation, frequency standby. The basic method of control in different load, the condensate extraction pump inverter and deaerator feed water valve joint control, to maintain the deaerator water level within a certain range. And to ensure that the pressure of the condensation main tube does not below the protect pressure value of the lower pressure bypass. This article focuses on the condensate pump inverter frequency control strategy and comparative analysis of the actual operations in the different application. The changing of the condensate extraction Pump frequency converter proves the effectivenes and frequency transformation of energy-saving automatic control of the superior quality from practice。... |
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