摘要
本文从国际电工委员会IEC61362(1998)"水轮机控制系统技术规程"中对水轮发电机组甩100%额定负荷后动态品质指标分析入手,运用MATLAB语言及SIMULINK对水轮机调节系统甩负荷过程建模并进行仿真计算,分析了水轮机调速器典型结构、调节参数和控制方式对控制性能影响。结果表明:在调速器中引入适当的非线性控制环节,能够很好地解决大波动到小波动过程的平稳过渡,从而使甩负荷过程性能指标显著提高;非线性与线性水轮机模型甩负荷仿真曲线的变化趋势相近,因而线性水轮机模型仿真结果具有代表性。
The author studied the transient performance index of hydraulic generator unit in a full load rejection, which was specified in IEC61362(1998)—'Guide to specification of hydraulic turbine control systems'. The MATLAB language and SIMULAINK were adopted and a model of hydraulic turbine regulation systems was developed. The influence of the governor's typical structure regulating parameter and control mode were analyzed. The simulation result showed that the smooth transition from big fluctuate to little fluctuate was well obtained by introducing a proper nonlinear component into the governor. The transient performance index was evidently enhanced. The simulating curve of the nonlinear hydraulic turbine model was close to that of the linear model, so that the linear hydraulic turbine model, instead of the nonlinear model, could be used to simulate the hydraulic turbine performance with good representation.
出处
《水利学报》
EI
CSCD
北大核心
2003年第3期98-103,共6页
Journal of Hydraulic Engineering
关键词
水轮发电机组
甩负荷
调速器
非线性控制
hydraulic generator unit
load rejection
performance index
non-linear control
