FIELD: power industry.
SUBSTANCE: according to a control method of power plants (NPP), feed water flow rate of a steam generator is controlled by pump control as per a signal of feed water flow rate deviation from its setpoint, as well as steam pressure is measured and controlled. Integration of a signal of steam pressure deviation from its setpoint is performed, as per which the scope of the feed water flow rate signal is changed by a corrector. A restriction setpoint of steam pressure deviation from its setpoint and a restriction setpoint of feed water flow rate deviation from its setpoint is introduced. When setpoints are exceeded, the signal from the integrator input is switched off and the integration process is stopped. When the above excess restriction setpoints are not available, the integrator is in operation.
EFFECT: improving measurement accuracy of feed water flow rate due to compensation of error of its meter.
4 cl, 1 dwg
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