水轮机及调节系统模型辨识试验研究

Experimental research on identification of hydraulic turbine regulating system model

目前水轮机及其调节系统建模工作已经成为水电厂涉网试验的重要组成部分,但是长期以来人们对其建模方法的研究尚不够充分。为了形成实用化的标准建模方法、客观地评估模型的合理性及准确性,分析研究了水轮机及调节系统模型辨识的方法,并结合现场试验数据,对模型辨识结果进行验证对比,同时提出了最终模型的确立与模型辨识精度的考核依据。对水轮机及调节系统模型辨识的一般原则、模型辨识的基本方法及过程、模型辨识精度的评价以及模型的适用性和最终模型的确定等方面的情况作了介绍。

The modeling of hydraulic turbine regulating system is an essential part of the power grid related test of the power plant; however,the study of the modeling method is not enough.The identification method of the hydraulic turbine regulating system model is studied and analyzed to form a practical standardized modeling method and objectively evaluate the feasibility and accuracy of the model.The model identification results were validated and compared with in-site test data.The assessment basis of the establishment and accuracy identification of the model is put forward.The general principle of model identification,basic method and process of model identification,evaluation of identification accuracy,feasibility of the model and determination of the final model are introduced.