摘要
在纯凝汽式机组负荷-压力对象简化非线性动态模型基础上,结合对抽汽式供热机组供热部分热力系统的分析,依据基本物质和能量守恒定律,建立了供热机组发电负荷-汽轮机前压力-供热抽汽流量与锅炉燃料量-汽轮机高调门开度-抽汽调节蝶阀开度的微分方程形式的动态模型.通过仿真实验证明:供热机组与纯凝汽式机组发电负荷-汽轮机前压力对象控制特性不存在显著差异;供热机组可采用更为灵活的控制方式以提升发电负荷调节速率.
Based on simplified nonlinear dynamic model of load-pressure object for pure condensation unit,in combination of analysis on thermodynamic system in heat-supply part of extraction steam turbine,according to the basic law of conservation of energy and mass,a differential equation model of load-throttle pressure-extraction steam flow versus boiler fuel flow-turbine governor valve＇s opening-extraction control valve＇s opening was constructed for heat supply units.Simulation results show that there is no significant difference between heat supply units and pure condensation units in the control characteristics of load-throttle pressure object.For heat supply units,it is recommended to take more flexible control modes to promote the load up/down rate.
出处
《动力工程学报》
CAS
CSCD
北大核心
2012年第3期192-196,228,共6页
Journal of Chinese Society of Power Engineering
基金
教育部博士点基金资助项目(200800790006)
国家自然科学基金重点资助项目(51036002)
关键词
供热机组
负荷
压力
动态模型
协调控制
heat supply unit
load
pressure
dynamic model
coordinated control
作者简介
刘吉臻(1951-),男,山西岚县人,教授,博士生导师,研究方向为:新能源规模利用条件下火电机组安全、经济、环保运行问题;联系人:田亮,男,副教授,博士,电话(Tel.):13582057872,E-mail:tl0615@sina.com.
