Weighted values based on the measured gas turbine combustion system line monitoring method

Based on the measured weight values ​​point line monitoring method for gas turbine combustion system, belonging to the gas turbine combustion system monitoring. Existing combustion monitoring system is difficult to make the problem of determination of the combustion state trends. A system for online monitoring method for a gas turbine combustor measuring points based on the weighting values, to the temperature measuring points arranged in n number of uniformly circumferential turbine outlet of the gas turbine exhaust temperature to obtain data in the normal operation period tm Ti; Ti increases associated with T1 factor ai, 1, of Ti and T1 in relation function, respectively, to give a predicted value of Ti; calculating a fault-free temperature measuring points 1 exhaust temperature of theory T1 '; allowing the temperature measuring point theory 1 values ​​T1' and the temperature measuring points 1 T1 is the difference between the measured value △ T1 satisfy 0 mean and standard deviation of the normal distribution σ1; monitored by the temperature measuring points T1 and scope of the relationship between △ [-3σ1,3σ1] a. Online monitoring of the gas turbine exhaust temperature achieved according to the present invention, the full use of the correlation between the exhaust temperature of each measuring point, accurately detect the abnormal evolution.