基于遗传算法构建转子温度计算公式

Based on Genetic Algorithm to Construct the Formulas of Rotor Temperature

介绍了一种利用有限元的计算结果,通过遗传算法来确定有关汽轮机转子温度计算惯性环节系数的方法。该方法用冷态启动、极热态启动、滑参数停机过程的汽轮机转子有限元法计算的体积平均温度作为标准值,通过寻优方法来确定惯性环节法计算汽轮机转子体积平均温度的并联的惯性环节的个数,以及每个惯性环节的时间常数和权重系数。并通过温态启动和热态启动过程的汽轮机转子有限元法和惯性环节法计算的体积平均温度的对比,来验证得到的系数的精度和易用性。该方法解决了惯性环节法系数确定的工程难题。

An introduction is being presented to calculation methods of the relevant inertia coefficients through genetic algorithm using a finite element calculations result. The method uses turbine rotor FEM volume average temperature in cold start, extremely hot start, slip parameter shutdown process as a standard value by optimizing search method to determine inertia parallel the number, and the time constant of each inertia and weighting coefficients. And through contrast of turbine rotor volume average temperature calculating by finite element method and the inertia element method in the warm and hot start process, to verify the accuracy and ease use of the coefficients obtained. The method solving the engineering problems of determining inertia coefficient of Turbine rotor temperature.