| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a nuclear power plant capable of suppressing the scattering of power rate during increasing the power. <P>SOLUTION: In the nuclear power plant operated by lowering supply water temperature during increasing the reactor thermal power, for maintaining the supply water temperature at a set temperature, an extraction flow rate control valve is placed in an extraction pipe for extracting steam from the steam system and sending steam to the supply water heater, a supply water temperature meter is placed at the outlet of the supply water heater and an extracted steam flow rate controller is provided for outputting the opening demand of the extracted steam flow rate control valve by inputting a supply water temperature measured value and a supply water temperature set value. Because the supply water temperature can be controlled to the set temperature by controlling the opening of the extracted steam flow rate control valve, the scattering of power rate in increasing the power of the nuclear power plant can be suppressed. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
