【摘要】 研究了原动机及调速器的实测建模问题。通过分析燃煤机组与燃气轮机在进行转速阶跃试验时的典型响应特性,提出一种新的原动机及调速器模型,即响应特性模型。根据模型的前提条件,指出了该模型的适用范围。应用响应特性模型以及单纯形算法,对某电厂的原动机及调速器进行了参数辨识,并利用系统发生频率大扰动时的数据进行校核。仿真值与实测值的对比表明,采用响应特性模型并结合实测的参数,在定性与定量两方面,均能较好地模拟实际的原动机及调速器。更多还原

【Abstract】 In the long term dynamic simulation of power systems,the accurate modeling of the turbine-governors is an essential.This paper investigates the modeling and parameter identification of turbine-governors by field tests.The typical response characteristics of steam turbines and gas turbines under speed step change tests are analyzed.Based on the result of the analysis,a new turbine-governor model structure,known as the response model,is proposed and its applicable range is also discussed.Then,based on the field test data,the parameters of the response model for a typical steam unit are identified by the simplex method.Later,these parameters are verified by a large frequency disturbance test.Comparison between the simulative curves and the test curves shows that the response model and its identified parameters can simulate the behavior of the turbine-governor under large frequency disturbance correctly.更多还原