COMBUSTOR PRESSURE FLUCTUATION MONITORING SYSTEM OF M701P GAS TURBINE AND ITS INTERLOCK PROTECTIVE FUNCTIONS

The principle,system structure,and the interlock protective functions of the combustor pressure fluctuation monitoring(CPFM) system for M701F gas turbine have been presented.Through improvement measures,such as adjusting the moment of force for installing the CPFM probe,modifying the alarming logic,and paralelly connecting resistance across IPC704 pre-box to combat interference of low frequency noise,etc.,the interlock functions of CPFM system can satisfy requirements in operation of the gas turbine.Practical application in recent years shows that the CPFM system can better remotely monitor combustion in the gas turbine,providing monitoring protection.