FEED WATER PUMP CONTROL DEVICE IN NUCLEAR POWER PLANT

摘要

PURPOSE:To provide a nuclear power plant feed water pump control device capable of automatically generating a feed water flow demand signal for compensating the feed water flow change of switched side feed water pumps by automatically operated side feed water pumps at the time of feed water pump switching operation so as to suppress the water level fluctuation of a reactor and to reduce the burden of an operator. CONSTITUTION:A reactor feed water control device is provided with a water level controller 60 formed of a PI control means for detecting the reactor water level, main steam flow and feed water flow of a boiling water reactor so as to output a feed water flow demand signal from the added value obtained by adding the deviation between the preset reactor water level set value and the detected actual water level to the deviation between the main steam flow and feed water flow; and a correcting means 67 for controlling the flow from plural feed water pumps 1, 2, 5, 6 for feeding water to the reactor by switching operators 61-64 of the feed water flow demand signal and another flow demand signal and automatically generating the flow command of the switched side feed pumps at the feed pump switching operation time and also compensating the flow of the automatically operated side feed pumps by the flow change of the switched side feed pumps.