舰船燃气轮机气路测量参数的理论选择方法

针对舰船燃气轮机气路性能监测诊断的有效性要求,归纳总结了气路测量参数选择要求,提出了1套系统完整的燃气轮机气路测量参数的理论选择方法。在可测量和易测量要求及测试精度要求的初步选择基础上,依次采用影响系数、相关系数和条件数对气路测量参数的敏感性、相关性和诊断误差等进行了分析,最终从理论上选择了某舰船3轴燃气轮机气路性能监测诊断的测量参数。实例表明该理论方法具有一定的通用性和工程应用价值,对燃气轮机气路测量参数的选择有一定的指导作用。

Selection of Gas Path Measurement Parameters for Marine Gas Turbine in Theory

According to the validity demand of gas turbine gas path performance monitoring and diagnosis, requirements for gas path measurement parameters selection were generalized and summarized, and a systematic and complete theoretical method of gas turbine gas path measurement parameter selection was put forward. Based on the preliminary selection with the requirements of measurability, testability and measuring accuracy, the sensitivity, correlation, diagnosis error of the gas path measurement parameters were analyzed in combine with influence coefficient, correlation coefficient and condition number respectively. Finally, the measurement parameters were chosen for the gas path performance monitoring and diagnosis of a marine gas turbine with three shafts. Example shows that the theoretical method has certain universality and engineering application value, and has certain instruction function to the selection of gas path measurement parameters of gas turbine.