局部相似理论在双轴燃气轮机实时建模中的应用

本文提出的双轴燃气轮机的局部相似理论, 将高压转子看成一台在特定环境下工作的单轴燃气轮机, 将高、低压涡轮及尾喷管看成一个独立的联合部件。用这种方法建立的燃气轮机实时模型, 可降低动态特性参数的维数, 满足计算速度和精度的要求。因而能用于双轴燃气轮机的微机数字控制和对气动性能参数监控中的失效参数实时估值计算。 

PARTIAL SIMILARITY AND A REAL-TIME MODEL OF TWIN-SPOOL GAS TURBINE

Partial similarity of twin spool gas turbine means that the high pressure rotor can be considered as a single spool gas turbine operating under a specifical circumstance,the high and low pressure turbines and exhaust nozzle are considered a single components of a combination.In formulation of a real time gas turbine model,this method reduces dimensions of the dynamic parameters of the model.Therefore,calculation speed and accuracy of the model are good enough for real time modeling.Thus the model is capable of microcomputer digital control of gas turbine and of real time estimation of mal functioned parameters in the gas turbine monitoring system.