| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a load on a gas turbine by an operation confirmation test of an excessive speed prevention function. <P>SOLUTION: An operation confirmation test of an excessive speed prevention means is incorporated in a load dump test. A second threshold value smaller than a first threshold value being a trip rotation number in normal operation and smaller than a permissible maximum rotation number in the load dump test is set as a trip rotation number for the test, a gas turbine rotation number is increased by performing load dump during the load dump test, and when it is detected by a trip control function 50 that the gas turbine rotation number increases and surpasses the second threshold value and a trip signal is generated, the trip signal is retained for a predetermined period, and the trip signal is output to a flow regulation valve 42 after the predetermine period elapses. <P>COPYRIGHT: (C)2012,JPO&INPIT |
