单抽汽轮机热电耦合的模糊解耦控制
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摘要
抽汽式汽轮机存在着热负荷、电负荷之间的强耦合以及参数的不确定性问题,其中任一负荷的变化都会引起另一个的波动,进而影响整个汽轮机控制系统的性能.针对上述问题,以某造纸厂热电厂6 MW单抽汽轮机为例,在分析其工作原理的基础上应用机理法建立了系统数学模型.其次,分析了其强耦合特性,根据实际需要设计了模糊解耦控制方法以实现热电解耦及提高系统适应性.最后,进行了Matlab/Simulink仿真实验,结果表明,与常规对角解耦相比,该方法在强耦合及模型参数存在一定波动时,仍能保证较好的稳定性及鲁棒性.
Parameter uncertainty and serious coupling relationship exists between heat load and electric load are two major problem in extraction steam turbine,a small change in either load of the two will cause further fluctuations,thereby affecting the performance of the turbine control system.To solve these problems,taking a 6MW single extraction steam turbine from power plant of a paper mill as a case.Based on the analysis of its working principle we establish a mathematical model.Then,we analysis its strong coupling characteristics,and design a fuzzy decoupling control method to achieve decoupling and improve the thermoelectric system adaptability,according to the actual need.Finally,the Matlab/Simulink simulation results show that,compared to conventional diagonal decoupling,the method in strong coupling model parameters and there are some fluctuations,it can still ensure better stability and robustness.
Parameter uncertainty and serious coupling relationship exists between heat load and electric load are two major problem in extraction steam turbine,a small change in either load of the two will cause further fluctuations,thereby affecting the performance of the turbine control system.To solve these problems,taking a 6MW single extraction steam turbine from power plant of a paper mill as a case.Based on the analysis of its working principle we establish a mathematical model.Then,we analysis its strong coupling characteristics,and design a fuzzy decoupling control method to achieve decoupling and improve the thermoelectric system adaptability,according to the actual need.Finally,the Matlab/Simulink simulation results show that,compared to conventional diagonal decoupling,the method in strong coupling model parameters and there are some fluctuations,it can still ensure better stability and robustness.
引文
[1]郭钰峰,徐志强,于达仁.汽轮机调节原理[M].2版.北京:机械工业出版社,2010.
[2]唐丽.抽汽式汽轮机热电牵连解耦控制的研究与应用[J].电站系统工程,2009,25(1):61-63.
[3]史毅越.抽汽式汽轮机的模型辨识及热电解耦[D].南京:东南大学,2014.
[4]纪云锋.抽汽汽轮机组DEH系统的解耦控制[J].液压与气动,2007(5):49-50.
[5]裘浔隽,杨瑜文,林中达.用多变量模糊神经网络实现双抽汽轮机热电负荷的解耦控制[J].汽轮机技术,2003,45(2):76-79.
[6]吴优福,裘浔隽.用神经网络实现双抽汽轮机的负荷解耦控制及仿真[J].能源研究与利用,2003(1):29-32,40.
[7]陈蓓,田娜,姚培.基于单神经元自适应PID的水分定量内模解耦控制[J].陕西科技大学学报(自然科学版),2008,26(3):91-95.
[8]高希明,孟彦京.一种基于神经元的解耦控制算法研究[J].陕西科技大学学报(自然科学版),2009,27(1):110-113.
[9]胡灿,田小梅.基于耦合度分析的家禽孵化过程模糊解耦控制系统[J].衡阳师范学院学报,2016,37(3):26-29.
[10]麦雪凤,宁甲宇.焦炉集气管压力模糊解耦及吸力协调控制与应用[J].冶金自动化,2015,39(1):72-76.
[11]王茹,陶泽炎.基于模糊前馈解耦的变风量空调控制方法研究[J].计算机测量与控制,2015,23(2):450-453,456.
[12]王昕煜,赵静一,徐丽杰.桥梁同步顶升模糊解耦控制策略研究[J].中国工程机械学报,2015,13(4):347-352,371.
[13]王江鹏.基于模糊解耦的精馏塔温度控制的仿真研究[D].昆明:昆明理工大学,2015.
[14]张玲,张文苑,郑恩让.一种模糊解耦控制系统的设计与仿真研究[J].计算机仿真,2010,27(8):118-121.
[15]柴天佑.多变量自适应解耦控制及应用[M].北京:科学出版社,2001.
[2]唐丽.抽汽式汽轮机热电牵连解耦控制的研究与应用[J].电站系统工程,2009,25(1):61-63.
[3]史毅越.抽汽式汽轮机的模型辨识及热电解耦[D].南京:东南大学,2014.
[4]纪云锋.抽汽汽轮机组DEH系统的解耦控制[J].液压与气动,2007(5):49-50.
[5]裘浔隽,杨瑜文,林中达.用多变量模糊神经网络实现双抽汽轮机热电负荷的解耦控制[J].汽轮机技术,2003,45(2):76-79.
[6]吴优福,裘浔隽.用神经网络实现双抽汽轮机的负荷解耦控制及仿真[J].能源研究与利用,2003(1):29-32,40.
[7]陈蓓,田娜,姚培.基于单神经元自适应PID的水分定量内模解耦控制[J].陕西科技大学学报(自然科学版),2008,26(3):91-95.
[8]高希明,孟彦京.一种基于神经元的解耦控制算法研究[J].陕西科技大学学报(自然科学版),2009,27(1):110-113.
[9]胡灿,田小梅.基于耦合度分析的家禽孵化过程模糊解耦控制系统[J].衡阳师范学院学报,2016,37(3):26-29.
[10]麦雪凤,宁甲宇.焦炉集气管压力模糊解耦及吸力协调控制与应用[J].冶金自动化,2015,39(1):72-76.
[11]王茹,陶泽炎.基于模糊前馈解耦的变风量空调控制方法研究[J].计算机测量与控制,2015,23(2):450-453,456.
[12]王昕煜,赵静一,徐丽杰.桥梁同步顶升模糊解耦控制策略研究[J].中国工程机械学报,2015,13(4):347-352,371.
[13]王江鹏.基于模糊解耦的精馏塔温度控制的仿真研究[D].昆明:昆明理工大学,2015.
[14]张玲,张文苑,郑恩让.一种模糊解耦控制系统的设计与仿真研究[J].计算机仿真,2010,27(8):118-121.
[15]柴天佑.多变量自适应解耦控制及应用[M].北京:科学出版社,2001.