STUDY ON EMULATION MODEL FOR PRESSURE AND WATER-LEAVEL IN THE DRUM OF 360 MW UNIT
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STUDY ON EMULATION MODEL FOR PRESSURE AND WATER-LEAVEL IN THE DRUM OF 360 MW UNIT
Thermal Power GenerationVol. 38, Issue 10, Pages: 20-24(2009)
作者机构:
重庆电力高等专科学校动力系
作者简介:
基金信息:
DOI:
CLC:TM621
Published:2009
稿件说明:
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XIANG Xian-bing, XIANG ShangPower Department. STUDY ON EMULATION MODEL FOR PRESSURE AND WATER-LEAVEL IN THE DRUM OF 360 MW UNIT[J]. Thermal power generation, 2009, 38(10): 20-24.
DOI:
XIANG Xian-bing, XIANG ShangPower Department. STUDY ON EMULATION MODEL FOR PRESSURE AND WATER-LEAVEL IN THE DRUM OF 360 MW UNIT[J]. Thermal power generation, 2009, 38(10): 20-24.DOI:
STUDY ON EMULATION MODEL FOR PRESSURE AND WATER-LEAVEL IN THE DRUM OF 360 MW UNIT
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。
Abstract
Taking 360 MW unit in one power plnat as the object
a mathematic model of water-level 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 self-balance.