大型煤粉锅炉炉膛压力波动特性分析
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摘要
为研究大型煤粉锅炉炉膛压力波动的形成机理,并定量分析各扰动因素对炉膛压力的影响程度,提出一种联合独立分量分析(ICA)、多尺度延时相关和频谱分析的炉膛压力特性分析方法。该方法将炉膛压力波动视为各种独立波动分量的叠加,通过ICA分离出炉膛压力信号中相互独立的波动分量,然后利用多尺度延时相关将独立分量与炉膛压力扰动因素进行逆向匹配,确定各独立分量对应的扰动源,最后结合频谱分析得到各扰动源对炉膛压力波动的动态增益。对某600 MW机组煤粉锅炉分析表明:相较于给煤量信号的中频分量,炉膛压力波动与一次风量、送风量、引风量信号的中频分量的关系更密切;单位送、引风量波动对炉膛压力的影响基本相同,但单位一次风量变化对炉膛压力的影响大于单位送、引风量变化对炉膛压力的影响。
To study the fluctuation mechanism of the furnace pressure and to quantitatively analyze the influence of various disturbance factors on furnace pressure, a characteristic analysis method of furnace pressure based on independent component analysis(ICA), multi-scale delay correlation and spectrum analysis was proposed. Firstly,the fluctuation of furnace pressure was regarded as the superposition of various independent fluctuation components, and the independent fluctuation components were obtained by using ICA. Secondly, the disturbance factors of furnace pressure were matched with the independent components by using multi-scale delay correlation to determine the corresponding perturbation source of each independent component. Finally, the spectrum analysis was used to obtain the dynamic gain of each disturbance source to the furnace pressure fluctuation. The analysis results of a 600 MW pulverized coal boiler show that, the furnace pressure fluctuation is more closely related to the intermediate frequency component of the primary air, forced-draft air and induced-draft air than that of the coal feed. The unit forced-draft air fluctuation and unit induced-draft air fluctuation has the same effect on furnace pressure, but the effect of changing unit primary air on the furnace pressure is greater than that of changing unit forced-draft air or unit induced-draft air.
To study the fluctuation mechanism of the furnace pressure and to quantitatively analyze the influence of various disturbance factors on furnace pressure, a characteristic analysis method of furnace pressure based on independent component analysis(ICA), multi-scale delay correlation and spectrum analysis was proposed. Firstly,the fluctuation of furnace pressure was regarded as the superposition of various independent fluctuation components, and the independent fluctuation components were obtained by using ICA. Secondly, the disturbance factors of furnace pressure were matched with the independent components by using multi-scale delay correlation to determine the corresponding perturbation source of each independent component. Finally, the spectrum analysis was used to obtain the dynamic gain of each disturbance source to the furnace pressure fluctuation. The analysis results of a 600 MW pulverized coal boiler show that, the furnace pressure fluctuation is more closely related to the intermediate frequency component of the primary air, forced-draft air and induced-draft air than that of the coal feed. The unit forced-draft air fluctuation and unit induced-draft air fluctuation has the same effect on furnace pressure, but the effect of changing unit primary air on the furnace pressure is greater than that of changing unit forced-draft air or unit induced-draft air.
引文
[1]黄勇理,刘杰,柳朝晖,等.富氧燃烧电站锅炉风烟燃烧过程控制方案设计[J].动力工程学报,2015,35(10):786-791.HUANG Yongli,LIU Jie,LIU Zhaohui,et al.Design of control programs for air/gas circulation and combustion subsystem of an oxy-fuel combustion boiler[J].Journal of Chinese Society of Power Engineering,2015,35(10):786-791.
[2]TAN W,FANG F,TIAN L,et al.Linear control of a boiler-turbine unit:analysis and design[J].ISATransactions,2008,47(2):189-197.
[3]李应保,王东风.一种改进型LSSVM模型在电站锅炉燃烧与优化中的应用[J].动力工程学报,2018,38(4):258-264.LI Yingbao,WANG Dongfeng.Application of an improved LSSVM in combustion modeling and optimization of utility boilers[J].Journal of Combustion Science and Technology,2018,38(4):258-264.
[4]郝祖龙,郝雷,常太华,等.电站锅炉炉膛压力信号的复杂性测度分析[J].现代电力,2007,24(1):53-57.HAO Zulong,HAO Lei,CHANG Taihua,et al.Analysis of pressure signals in furnace of utility boiler using complexity measure[J].Modern Electric Power,2007,24(1):53-57.
[5]高建强,张晨.300 MW机组富氧煤粉锅炉燃烧和烟气系统动态特性仿真分析[J].热力发电,2017,46(2):94-99.GAO Jianqiang,ZHANG Chen.Numerical simulation on dynamic performance of combustion and flue gas system in a 300 MW oxy-coal fired boiler[J].Thermal Power Generation,2017,46(2):94-99.
[6]ERIC M D,CVETINOVIC D B,STEFANOVIC P L,et al.Investigation of pressure pulsations in the furnace and flue gas tract of the pulverized coal combustion utility boiler[J].Thermal Science,2010,14(1):261-270.
[7]田亮,刘鑫屏,王琪.基于多尺度相关和机理建模的炉膛压力分析[J].动力工程学报,2012,32(11):853-858.TIAN Liang,LIU Xinping,WANG Qi.Analysis of furnace pressure based on multi-scale correlation and mechanism modeling[J].Journal of Chinese Society of Power Engineering,2012,32(11):853-858.
[8]刘鑫屏,刘洁,田亮,等.燃烧扰动下炉膛压力的特性分析[J].动力工程学报,2010,30(5):357-362.LIU Xinping,LIU Jie,TIAN Liang,et al.Analysis on furnace pressure characteristics under combustion disturbance[J].Journal of Chinese Society of Power Engineering,2010,30(5):357-362.
[9]朱林忠,胡平,顾德东,等.掉焦对炉膛空气动力场热冲击的分析和计算[J].动力工程学报,2007,27(6):881-884.ZHU Linzhong,HU Ping,GU Dedong,et al.Analysis and calculation of thermal impacts inflicted on dynamic flow fields in furnaces by dropping-off of clinker[J].Journal of Chinese Society of Power Engineering,2007,27(6):881-884.
[10]程星星,金保升,赵振宙.锅炉内爆动态模拟与分析[J].中国电机工程学报,2010,30(2):46-49.CHENG Xingxing,JIN Baosheng,ZHAO Zhenzhou.Numerical simulation and analysis of furnace implosion[J].Proceedings of the CSEE,2010,30(2):46-49.
[11]王春昌.煤粉气流爆燃与炉膛负压变化的数学模型研究[J].中国电力,2006,39(12):44-47.WANG Chunchang.Study on the mathematic models for the relation between furnace pressure and coal combustion condition[J].Electric Power,2006,39(12):44-47.
[12]王春昌,宋志强,马光荣.煤粉气流脱火与炉膛负压波动的数学模型研究[J].热力发电,2008,37(3):22-25.WANG Chunchang,SONG Zhiqiang,MA Guangrong.Study on mathematical model under blowing-off fire from flow stream of pulverized coal with air and under fluctuation of furnace draft[J].Thermal Power Generation,2008,37(3):22-25.
[13]朱文龙,周建中,肖剑,等.独立分量分析-经验模态分解特征提取在水电机组振动信号中的应用[J].中国电机工程学报,2013,33(29):95-101.ZHU Wenlong,ZHOU Jianzhong,XIAO Jian,et al.An ICA-EMD feature extraction and its application to vibration signals of hydroelectric generating units[J].Proceedings of the CSEE,2013,33(29):95-101.
[14]JONES N B,LI Y H.A review of condition monitoring and fault diagnosis for diesel engines[J].Lubrication Science,2000,6(3):267-291.
[15]赵建文,刘永佳,梁静,等.基于改进Fast ICA及Romanovsky准则的故障选线[J].中国电机工程学报,2016,36(19):5209-5218.ZHAO Jianwen,LIU Yongjia,LIANG Jing,et al.Fault line selection based on improved Fast ICA and Romanovsky guidelines[J].Proceedings of the CSEE,2016,36(19):5209-5218.
[16]高建强,薛楠楠,王立坤,等.富氧煤粉燃烧锅炉炉内过程仿真模型研究[J].系统仿真学报,2014,26(8):1831-1835.GAO Jianqiang,XUE Nannan,WANG Likun,et al.Research on simulation model of inter-boiler process of oxygen-enriched combustion of pulverized coal[J].Journal of System Simulation,2014,26(8):1831-1835.
[17]焦卫东,杨世锡,钱苏翔,等.基FFT-MCC分析的ICA(BSS)盲不确定性消除[J].中国机械工程,2006,17(7):673-677.JIAO Weidong,YANG Shixi,QIAN Suxiang,et al.Anew method for recognition of independent noise sources of complex system under strong noisy environment[J].China Mechanical Engineering,2006,17(7):673-677.
[2]TAN W,FANG F,TIAN L,et al.Linear control of a boiler-turbine unit:analysis and design[J].ISATransactions,2008,47(2):189-197.
[3]李应保,王东风.一种改进型LSSVM模型在电站锅炉燃烧与优化中的应用[J].动力工程学报,2018,38(4):258-264.LI Yingbao,WANG Dongfeng.Application of an improved LSSVM in combustion modeling and optimization of utility boilers[J].Journal of Combustion Science and Technology,2018,38(4):258-264.
[4]郝祖龙,郝雷,常太华,等.电站锅炉炉膛压力信号的复杂性测度分析[J].现代电力,2007,24(1):53-57.HAO Zulong,HAO Lei,CHANG Taihua,et al.Analysis of pressure signals in furnace of utility boiler using complexity measure[J].Modern Electric Power,2007,24(1):53-57.
[5]高建强,张晨.300 MW机组富氧煤粉锅炉燃烧和烟气系统动态特性仿真分析[J].热力发电,2017,46(2):94-99.GAO Jianqiang,ZHANG Chen.Numerical simulation on dynamic performance of combustion and flue gas system in a 300 MW oxy-coal fired boiler[J].Thermal Power Generation,2017,46(2):94-99.
[6]ERIC M D,CVETINOVIC D B,STEFANOVIC P L,et al.Investigation of pressure pulsations in the furnace and flue gas tract of the pulverized coal combustion utility boiler[J].Thermal Science,2010,14(1):261-270.
[7]田亮,刘鑫屏,王琪.基于多尺度相关和机理建模的炉膛压力分析[J].动力工程学报,2012,32(11):853-858.TIAN Liang,LIU Xinping,WANG Qi.Analysis of furnace pressure based on multi-scale correlation and mechanism modeling[J].Journal of Chinese Society of Power Engineering,2012,32(11):853-858.
[8]刘鑫屏,刘洁,田亮,等.燃烧扰动下炉膛压力的特性分析[J].动力工程学报,2010,30(5):357-362.LIU Xinping,LIU Jie,TIAN Liang,et al.Analysis on furnace pressure characteristics under combustion disturbance[J].Journal of Chinese Society of Power Engineering,2010,30(5):357-362.
[9]朱林忠,胡平,顾德东,等.掉焦对炉膛空气动力场热冲击的分析和计算[J].动力工程学报,2007,27(6):881-884.ZHU Linzhong,HU Ping,GU Dedong,et al.Analysis and calculation of thermal impacts inflicted on dynamic flow fields in furnaces by dropping-off of clinker[J].Journal of Chinese Society of Power Engineering,2007,27(6):881-884.
[10]程星星,金保升,赵振宙.锅炉内爆动态模拟与分析[J].中国电机工程学报,2010,30(2):46-49.CHENG Xingxing,JIN Baosheng,ZHAO Zhenzhou.Numerical simulation and analysis of furnace implosion[J].Proceedings of the CSEE,2010,30(2):46-49.
[11]王春昌.煤粉气流爆燃与炉膛负压变化的数学模型研究[J].中国电力,2006,39(12):44-47.WANG Chunchang.Study on the mathematic models for the relation between furnace pressure and coal combustion condition[J].Electric Power,2006,39(12):44-47.
[12]王春昌,宋志强,马光荣.煤粉气流脱火与炉膛负压波动的数学模型研究[J].热力发电,2008,37(3):22-25.WANG Chunchang,SONG Zhiqiang,MA Guangrong.Study on mathematical model under blowing-off fire from flow stream of pulverized coal with air and under fluctuation of furnace draft[J].Thermal Power Generation,2008,37(3):22-25.
[13]朱文龙,周建中,肖剑,等.独立分量分析-经验模态分解特征提取在水电机组振动信号中的应用[J].中国电机工程学报,2013,33(29):95-101.ZHU Wenlong,ZHOU Jianzhong,XIAO Jian,et al.An ICA-EMD feature extraction and its application to vibration signals of hydroelectric generating units[J].Proceedings of the CSEE,2013,33(29):95-101.
[14]JONES N B,LI Y H.A review of condition monitoring and fault diagnosis for diesel engines[J].Lubrication Science,2000,6(3):267-291.
[15]赵建文,刘永佳,梁静,等.基于改进Fast ICA及Romanovsky准则的故障选线[J].中国电机工程学报,2016,36(19):5209-5218.ZHAO Jianwen,LIU Yongjia,LIANG Jing,et al.Fault line selection based on improved Fast ICA and Romanovsky guidelines[J].Proceedings of the CSEE,2016,36(19):5209-5218.
[16]高建强,薛楠楠,王立坤,等.富氧煤粉燃烧锅炉炉内过程仿真模型研究[J].系统仿真学报,2014,26(8):1831-1835.GAO Jianqiang,XUE Nannan,WANG Likun,et al.Research on simulation model of inter-boiler process of oxygen-enriched combustion of pulverized coal[J].Journal of System Simulation,2014,26(8):1831-1835.
[17]焦卫东,杨世锡,钱苏翔,等.基FFT-MCC分析的ICA(BSS)盲不确定性消除[J].中国机械工程,2006,17(7):673-677.JIAO Weidong,YANG Shixi,QIAN Suxiang,et al.Anew method for recognition of independent noise sources of complex system under strong noisy environment[J].China Mechanical Engineering,2006,17(7):673-677.
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