| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control apparatus of a water supply pump that makes a reducing amount of a water supply flow rate to a steam generator small during a steam condensate pump trip to inhibit a water level of the steam generator from reducing and prevents the steam condensate pump continuing an operation from continuing a runout operation. <P>SOLUTION: The control apparatus of the water supply pump includes: the plurality of steam condensate pumps installed in parallel to increase a pressure of steam condensate from a condenser; and the plurality of water supply pumps installed in parallel to further increase the steam condensate whose pressure has been increased by the steam condensate pump to supply the steam condensate to the steam generator. The control apparatus outputs a frequency control instruction to a variable frequency power supply device. The control apparatus also includes: a tripping controller that changes the maximum flow-rate limit value, only in the transition duration, with respect to the frequency control instruction to the variable frequency power supply to a runout flow rate in which a short time operation is admitted when the trip of the steam condensate pump during the operation is detected; and a restoration controller that changes the maximum flow-rate limit value from the runout flow rate to a normal flow rate when a stand-by machine of the steam condensate pump is detected to start. <P>COPYRIGHT: (C)2012,JPO&INPIT |
