360MW机组汽包压力及水位仿真模型研究  

STUDY ON EMULATION MODEL FOR PRESSURE AND WATER-LEAVEL IN THE DRUM OF 360 MW UNIT

作　　者：向贤兵[1] 向上[1] 

机构地区：[1]重庆电力高等专科学校动力系,重庆400053

出　　处：《热力发电》2009年第10期20-24,共5页Thermal Power Generation

摘　　要：以某电厂360MW机组为对象,建立汽包水位数学模型,并在Matlab/Simulink平台上进行仿真试验,获得了模型的动态特性。仿真结果表明,所建模型各系数为压力的函数,模型具有明显的时变性与非线性,可用于检验控制系统在大范围内的控制性能。当汽轮机调节阀和给水流量、燃料量扰动时,汽包水位变化的动态特性均表现为具有惯性和无自平衡能力的特征。Taking 360 MW unit in one power plnat as the object,a mathematic model of waterlevel in the drum has been established,and an emulation test being carried out on the Matlab/Simulink platform, obtaining the dynamic characters of the model. Results of emulation show that each coefficient of the established model is a function of the pressure. The model has remarkable time - varying behavior and non - linearity. It can be used to check control performance of the control system in a large range. In the event of disturbance occurring in turbine＇s govenor valve, feed water flow rate, or fuel quantity, the dynamic characters of water - level variation in the drum are all manifested as boasting inertia and having no ability for selfbalance.

关 键 词：360MW机组 汽包水位 汽包压力 数学模型 动态特性 仿真 

分 类 号：TM62[电气工程—电力系统及自动化] TP391.9[自动化与计算机技术—计算机应用技术]