350MW超临界CFB机组负荷控制系统建模
|
摘要
针对某350MW超临界CFB机组,从机理分析出发,研究了给煤系统、炉膛热量释放、汽水加热系统和汽轮机系统的动态过程,建立了负荷控制系统模型,并通过稳态工况推导、回归分析和粒子群算法实现了模型参数的辨识和部分未知函数关系的确定。基于实际运行数据,验证了模型的准确性,并在Simulink仿真平台上进行了模型阶跃试验。结果表明:模型输出与实际输出具有良好的一致性,所建立的模型能准确反映机组的运行特性,可以满足各种控制算法的设计要求,为超临界CFB机组负荷控制系统的设计提供了理论基础。
Taking a 350 MW supercritical CFB unit as an object of study,a model of load control system was established for the unit by studying the dynamic process of its coal feeding system,furnace heat release,steam-water system and steam turbine system based on mechanism analysis,and subsequently the identification of model parameters and the determination of partial unknown functions were realized by steady-state recognition,regression analysis and particle swarm optimization.Using actual operation data of the power plant,the model accuracy was verified and the model step tests were carried out on the Simulink simulation platform.Results show that the model output agrees well with actual output,indicating that the model can accurately reflect the operation characteristics of the unit,which is able to meet the design requirements of various control algorithms,thus providing a theoretical basis for the design of load control systems for supercritical CFB units.
Taking a 350 MW supercritical CFB unit as an object of study,a model of load control system was established for the unit by studying the dynamic process of its coal feeding system,furnace heat release,steam-water system and steam turbine system based on mechanism analysis,and subsequently the identification of model parameters and the determination of partial unknown functions were realized by steady-state recognition,regression analysis and particle swarm optimization.Using actual operation data of the power plant,the model accuracy was verified and the model step tests were carried out on the Simulink simulation platform.Results show that the model output agrees well with actual output,indicating that the model can accurately reflect the operation characteristics of the unit,which is able to meet the design requirements of various control algorithms,thus providing a theoretical basis for the design of load control systems for supercritical CFB units.
引文
[1]彭源长.生产革命强供给消费革命降能耗[N].中电新闻网,2017-10-19(005).
[2]陆小泉.我国煤炭清洁开发利用现状及发展建议[J].煤炭工程,2016,48(3):8-10,14.LU Xiaoquan.Present situation and suggestion for clean coal development and utilization in China[J].Coal Engineering,2016,48(3):8-10,14.
[3]肖宏伟.2017年我国能源形势分析及2018年预测[J].科技促进发展,2017,13(11):902-908.XIAO Hongwei.Analysis of China's energy situation in 2017and prediction for 2018[J].Science&Technology for Development,2017,13(11):902-908.
[4]杜峰.低热值混煤燃烧特性研究[D].上海:上海交通大学,2013.
[5]高明明,岳光溪,雷秀坚,等.600 MW超临界循环流化床锅炉控制系统研究[J].中国电机工程学报,2014,34(35):6319-6328.GAO Mingming,YUE Guangxi,LEI Xiujian,et al.Research on control system of 600 MW supercritical circulating fluidized bed boiler[J].Proceedings of the CSEE,2014,34(35):6319-6328.
[6]吕俊复,于龙,张彦军,等.600 MW超临界循环流化床锅炉[J].动力工程,2007,27(4):497-501,587.LJunfu,YU Long,ZHANG Yanjun,et al.A 600MW supercritical circulating fluidized bed boiler[J].Journal of Power Engineering,2007,27(4):497-501,587.
[7]张体可.浅析350 MW超临界循环流化床锅炉技术[J].科技创新与应用,2016(26):134.ZHANG Tike.A brief analysis of 350MW supercritical circulating fluidized bed boiler technology[J].Technology Innovation and Application,2016(26):134.
[8]高明明,岳光溪,雷秀坚,等.超临界CFB锅炉主蒸汽压力控制系统研究[J].动力工程学报,2015,35(8):625-631.GAO Mingming,YUE Guangxi,LEI Xiujian,et al.Research on main steam pressure control of supercritical CFB boilers[J].Journal of Chinese Society of Power Engineering,2015,35(8):625-631.
[9]高明明.大型循环流化床锅炉燃烧状态监测研究[D].北京:华北电力大学,2013.
[10]秦志明,张栾英,谷俊杰.直流锅炉单元机组协调控制系统的研究与设计[J].动力工程学报,2016,36(1):16-21,29.QIN Zhiming,ZHANG Luanying,GU Junjie.Research and design on the coordinate control system of a once-through boiler unit[J].Journal of Chinese Society of Power Engineering,2016,36(1):16-21,29.
[11] GAO Mingming,HONG Feng,LIU Jizhen.Investigation on energy storage and quick load change control of subcritical circulating fluidized bed boiler units[J].Applied Energy,2017,185:463-471.
[12] GAO Mingming,HONG Feng,LIU Jizhen,et al.Investigation on the energy conversion and load control of supercritical circulating fluidized bed boiler units[J].Journal of Process Control,2018,68:14-22.
[13]吕明超.煤中挥发分测定影响因素的研究[J].煤质技术,2013(4):11-15.LMingchao.Research on the influencing factors on the determination of volatile matter in coal[J].Goal Quality Technology,2013(4):11-15.
[2]陆小泉.我国煤炭清洁开发利用现状及发展建议[J].煤炭工程,2016,48(3):8-10,14.LU Xiaoquan.Present situation and suggestion for clean coal development and utilization in China[J].Coal Engineering,2016,48(3):8-10,14.
[3]肖宏伟.2017年我国能源形势分析及2018年预测[J].科技促进发展,2017,13(11):902-908.XIAO Hongwei.Analysis of China's energy situation in 2017and prediction for 2018[J].Science&Technology for Development,2017,13(11):902-908.
[4]杜峰.低热值混煤燃烧特性研究[D].上海:上海交通大学,2013.
[5]高明明,岳光溪,雷秀坚,等.600 MW超临界循环流化床锅炉控制系统研究[J].中国电机工程学报,2014,34(35):6319-6328.GAO Mingming,YUE Guangxi,LEI Xiujian,et al.Research on control system of 600 MW supercritical circulating fluidized bed boiler[J].Proceedings of the CSEE,2014,34(35):6319-6328.
[6]吕俊复,于龙,张彦军,等.600 MW超临界循环流化床锅炉[J].动力工程,2007,27(4):497-501,587.LJunfu,YU Long,ZHANG Yanjun,et al.A 600MW supercritical circulating fluidized bed boiler[J].Journal of Power Engineering,2007,27(4):497-501,587.
[7]张体可.浅析350 MW超临界循环流化床锅炉技术[J].科技创新与应用,2016(26):134.ZHANG Tike.A brief analysis of 350MW supercritical circulating fluidized bed boiler technology[J].Technology Innovation and Application,2016(26):134.
[8]高明明,岳光溪,雷秀坚,等.超临界CFB锅炉主蒸汽压力控制系统研究[J].动力工程学报,2015,35(8):625-631.GAO Mingming,YUE Guangxi,LEI Xiujian,et al.Research on main steam pressure control of supercritical CFB boilers[J].Journal of Chinese Society of Power Engineering,2015,35(8):625-631.
[9]高明明.大型循环流化床锅炉燃烧状态监测研究[D].北京:华北电力大学,2013.
[10]秦志明,张栾英,谷俊杰.直流锅炉单元机组协调控制系统的研究与设计[J].动力工程学报,2016,36(1):16-21,29.QIN Zhiming,ZHANG Luanying,GU Junjie.Research and design on the coordinate control system of a once-through boiler unit[J].Journal of Chinese Society of Power Engineering,2016,36(1):16-21,29.
[11] GAO Mingming,HONG Feng,LIU Jizhen.Investigation on energy storage and quick load change control of subcritical circulating fluidized bed boiler units[J].Applied Energy,2017,185:463-471.
[12] GAO Mingming,HONG Feng,LIU Jizhen,et al.Investigation on the energy conversion and load control of supercritical circulating fluidized bed boiler units[J].Journal of Process Control,2018,68:14-22.
[13]吕明超.煤中挥发分测定影响因素的研究[J].煤质技术,2013(4):11-15.LMingchao.Research on the influencing factors on the determination of volatile matter in coal[J].Goal Quality Technology,2013(4):11-15.