【作者】 张志华；

【导师】 孙建平；

【作者基本信息】 华中科技大学 ， 流体机械及工程， 2011， 硕士

【摘要】 水轮机是水电站的核心设备,水电站在正式投入运行之前,科研人员必须对整个水轮机组进行全面的性能测试,以了解机组在各种工况下的运行状态,进而指导机组的安全、高效、稳定运行。本文针对模型及真机试验过程中数据处理的特点,开发出满足要求的数据处理软件。本文首先详细的介绍了模型水轮机试验参数的测量及其计算过程,并通过相似准则将模型特性参数转化为运转特性参数,根据模型水轮机性能分析的要求采用了拉格朗日与三次样条插值的数值处理方法并由特性曲线图形化的流程编写了相应的数据处理模块。其次针对现场效率及稳定性试验方法和过程进行了分析,鉴于模型试验与真机试验的差别,文中着重对各种测流方法与适用条件进行了探讨,并根据现场试验对数据处理结果的要求编写了相应的模块。在这一数据处理模块中采用了等截面截取等值线的方法,处理结果显示这种方法非常适合现场试验数据的处理。最后特别讨论了影响水电机组稳定运行的转子动平衡问题,并结合影响系数法的基本理论,实现了分析动平衡问题的数据分析模块。本文开发出的数据处理软件,程序文件小,执行速度快,并且具有强大的数值计算功能,既适合模型试验又满足现场试验要求。更多还原

【Abstract】 Turbine is the core equipment of hydropower stations,the scientific researchers must carry on comprehensive performance tests to entire hydroelectric power unit in order to understand the unit’s running status under each kind of operating mode before official investment.It can instruct the unit’s security,highly effective,steady operation.This article will develop a software satisfied the request of data present in figures which considers some characteristics in the testing data processing.The first part of this article introduces detailedly the survey and computational process of parameters in model hydraulic turbine test,and transforms the model characteristic parameters as the running performance parameters through the similarity criterion,has developed the corresponding software module according to the request of the model hydraulic turbine performance analysis and the process of the characteristic curve present in figures.The second part mostly aims at locale efficiency and stability test,considering the differences of model and real test,this part discusses emphatically all kinds of flux measurement and suitable condition to carry out, has developed the software module according to the locale test’s request of data procedure.The third part studies on dynamic balance of hydro-generator rotor which has great affect on the stability of hydro-generating units and developed analysis modules on problems of rotor balance combining with the theory of the influence coefficient method.The data processing software is small and highly executable,more than that,it has great power of calculation and graphics display,it is suitable for model test and field test.更多还原