600MW火电厂锅炉精确配风控制对AGC功能的影响研究
摘要
传统锅炉燃烧控制策略和厂家的挡板控制原则均不能很好地满足AGC对火电机组负荷调节要求。通过对锅炉燃烧的深入研究和分析,根据AGC对火电机组负荷调节要求,针对传统锅炉燃烧控制策略的缺点和不足,本课题提出了锅炉精确配风燃烧控制策略。
本课题针对盘南电厂600MW机组两种不同类型锅炉及其燃烧系统地提出了以精确配风为基础的燃烧控制策略、数学模型和解决方案,并首次在盘南电厂4台600MW机组上成功进行了应用和实施。经过对AGC项目的试验研究和在盘南电厂4台锅炉上的实际应用证明,采用精确配风的锅炉燃烧控制策略和方案是合理有效和成功的,AGC试验期间各项技术指标优良,锅炉参数控制平稳,锅炉燃烧稳定、高效,负荷响应及时、迅速,完全满足了电网AGC对机组的要求。
论文研究得到了清晰的现代大型电站锅炉在AGC方式下的控制思路:①对具体的控制过程要有合理的、符合实际情况的数学模型,以质量平衡和能量平衡为基础的精确配风方式来制定配风的控制策略,符合燃烧过程的控制方式,对于AGC控制方式下的电站锅炉推荐采用这种控制方式。②采用精确配风的燃烧控制策略要根据具体锅炉的实际情况,制定负荷锅炉燃烧特点要求的燃烧自动控制总体解决方案。③要有完整、可靠的一、二次风风量测点。由于现代大型电站锅炉结构比较紧凑,常常没有布置燃烧器对应的角二次风量或层二次风量,即使布置有也常常因为测点直管段很短,流场不均,致使测量结果误差很大,甚至不能使用。对于这些情况必需得对风量测量装置进行进一步的研究,采取适当的解决方案,最好进行必要的改造和技术升级。
研究结果还表明,精确配风的锅炉燃烧控制策略同样适合于其它类型的锅炉的燃烧自动控制,具有广阔的推广应用前景和价值。
Traditional boiler combustion control strategy and manufacturers control the baffle can not be good in principle to meet the AGC Power Unit load regulation requirements. Through the boiler combustion in-depth research and analysis, according to AGC of thermal power unit load regulation requirements, the traditional boiler combustion control strategy flaws and shortcomings, issue put forward the boiler combustion control accurate air distribution strategy.
This study on PanNan power plant for 600 MW unit of two different types of boiler combustion system and put forward a accurate air distribution based on the wind Combustion control strategy, mathematical models and solutions, and for the first time allocate in the PanNan four 600 MW power plant unit. After the AGC research the practical application in the PanNan four power plant boilers, prove Using accurate air distribution of the boiler combustion control strategies and programmes are rational, and effective and successful, in AGC trial period of technical indicators parameters is fine, smooth-control, combustion stability, efficient and timely response to load quickly, fully meet the requirements power network of AGC.
From this we can be relatively clear of large utility boilers in the modern mode of control of AGC ideas:①First of specific control process must be reasonable and in line with the actual situation of the mathematical model to the quality of balance and energy balance based on the accurate way to distribute air with the control strategy, the power plant boiler with the combustion process control by AGC recommend using this control method.②using of accurate air distribution to the combustion control strategy based on the actual situation of specific boiler, boiler according combustion characteristics requirements to establish the combustion control overall solution.③there must be complete and reliable one, the second Fengfeng measurement points. As the modern large-scale power plant boiler structure is compact, often without the corresponding layout burner angle of the wind or the second layer of secondary air, even if the layout is often because the measuring point of a very short straight, the flow field uneven, resulting in significant measurement error, Can not even use. For these circumstances necessary for the wind measurement devices to conduct further research to take appropriate solution, the best carry out the necessary transformation and upgrading technology.
The study and analysis also shows that, accurate Air Distribution wind boiler combustion control strategy also suitable for other types of boiler combustion control, has broad application prospects and value to extend.
本课题针对盘南电厂600MW机组两种不同类型锅炉及其燃烧系统地提出了以精确配风为基础的燃烧控制策略、数学模型和解决方案,并首次在盘南电厂4台600MW机组上成功进行了应用和实施。经过对AGC项目的试验研究和在盘南电厂4台锅炉上的实际应用证明,采用精确配风的锅炉燃烧控制策略和方案是合理有效和成功的,AGC试验期间各项技术指标优良,锅炉参数控制平稳,锅炉燃烧稳定、高效,负荷响应及时、迅速,完全满足了电网AGC对机组的要求。
论文研究得到了清晰的现代大型电站锅炉在AGC方式下的控制思路:①对具体的控制过程要有合理的、符合实际情况的数学模型,以质量平衡和能量平衡为基础的精确配风方式来制定配风的控制策略,符合燃烧过程的控制方式,对于AGC控制方式下的电站锅炉推荐采用这种控制方式。②采用精确配风的燃烧控制策略要根据具体锅炉的实际情况,制定负荷锅炉燃烧特点要求的燃烧自动控制总体解决方案。③要有完整、可靠的一、二次风风量测点。由于现代大型电站锅炉结构比较紧凑,常常没有布置燃烧器对应的角二次风量或层二次风量,即使布置有也常常因为测点直管段很短,流场不均,致使测量结果误差很大,甚至不能使用。对于这些情况必需得对风量测量装置进行进一步的研究,采取适当的解决方案,最好进行必要的改造和技术升级。
研究结果还表明,精确配风的锅炉燃烧控制策略同样适合于其它类型的锅炉的燃烧自动控制,具有广阔的推广应用前景和价值。
Traditional boiler combustion control strategy and manufacturers control the baffle can not be good in principle to meet the AGC Power Unit load regulation requirements. Through the boiler combustion in-depth research and analysis, according to AGC of thermal power unit load regulation requirements, the traditional boiler combustion control strategy flaws and shortcomings, issue put forward the boiler combustion control accurate air distribution strategy.
This study on PanNan power plant for 600 MW unit of two different types of boiler combustion system and put forward a accurate air distribution based on the wind Combustion control strategy, mathematical models and solutions, and for the first time allocate in the PanNan four 600 MW power plant unit. After the AGC research the practical application in the PanNan four power plant boilers, prove Using accurate air distribution of the boiler combustion control strategies and programmes are rational, and effective and successful, in AGC trial period of technical indicators parameters is fine, smooth-control, combustion stability, efficient and timely response to load quickly, fully meet the requirements power network of AGC.
From this we can be relatively clear of large utility boilers in the modern mode of control of AGC ideas:①First of specific control process must be reasonable and in line with the actual situation of the mathematical model to the quality of balance and energy balance based on the accurate way to distribute air with the control strategy, the power plant boiler with the combustion process control by AGC recommend using this control method.②using of accurate air distribution to the combustion control strategy based on the actual situation of specific boiler, boiler according combustion characteristics requirements to establish the combustion control overall solution.③there must be complete and reliable one, the second Fengfeng measurement points. As the modern large-scale power plant boiler structure is compact, often without the corresponding layout burner angle of the wind or the second layer of secondary air, even if the layout is often because the measuring point of a very short straight, the flow field uneven, resulting in significant measurement error, Can not even use. For these circumstances necessary for the wind measurement devices to conduct further research to take appropriate solution, the best carry out the necessary transformation and upgrading technology.
The study and analysis also shows that, accurate Air Distribution wind boiler combustion control strategy also suitable for other types of boiler combustion control, has broad application prospects and value to extend.
引文
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[2]Jaleeli N,VanSlyck L S,Ewart D N,et al.A G Hoffman understanding automatic generation control[J].IEEE Transactions on Power System,1992,7(3):1106-1122.
[3]于达仁,郭钰锋.电网一次调频能力的在线估计[J].中国电机工程学报,2004,24(3): 72-76.
[4]姚建刚,唐捷,李西泉等.发电侧电力市场竟价交易模式的研究[J].中国电机工程学报,2004, 24(5):78-83.
[5]吴磊,瞿桥柱,管晓宏.发电经济调度可行解判据及其求解方法[J].电网技术,2004,28(1): 1-4.
[6]何光宇,郭家春,陈雪青.广义不均衡网络流的改进算法及其应用[J].中国电机工程学报, 2004,24(7):59-63.
[7]方勇,李渝曾.合理回收容量成本的激励性电力竞争机制的建模研究[J].中国电机工程学报, 2004,24(1):18-23.
[8]韩忠旭,王毓学,曲云等.基于增量式函数观测器的状态反馈在平凉4×300MW单元机组中 的应用[J].中国电机工程学报,2004,24(12):233-237.
[9]林静怀,黄文英.控制策略标准在福建区域联络线控制与考核中的应用[J].电网技术,2004, 28(8):51-54.
[10]孟碧波,万诗新.水电厂计算机监控系统AGC安全问题对策[J].电网技术,2004,28(14): 49-52,56.
[11]孟詳星,韩学山.一种新的计及备用容量约束的调度模型[J].电网技术,2005,29(14): 20-25.
[12]贾德香,程浩忠.基于改进禁忌算法的区域控制偏差分区优化方法[J].电网技术,2007, 31(7):1-5.
[13]韩祯祥,电力系统自动控制.北京:水利电力出版社,1997
[14]N.Jaleeli,L.S.VanSlyck,D.N.Ewart,et al.,"Understanding automatic generation control," IEEE Trans.Power Systems,vol.7,no.3,pp.1106-1112,1992.
[15]J.Nanda,D.Kothari,and D.Das,"Dlscret-emode automatic generation control of a two-area reheat thermal system with new area control," IEEE Transactions on Power Systems,vol.4, May1989.
[16]X.C.Li,"Evolution on automatic generation control researches,"in Proceedings of the World Congress on Intelligent Control and Automation ( WCICA) ,vol.4, pp .3186-3190 ,Prentice Hall,2002.
[17] Ibraheem, P. Kumar,and D .P. Kothari,"Recentp hilosophies of automatic generation control strategies in power systems," IEEE Transactions On Power Systems, vol.20, pp. 346-357, Feb.2005.
[18] L .W .Curtis,Neural network-based control designs for complex industrial process applications.PhD thesis, University of Florida, 2000.
[19] B .V .Bernard, Mathematical modelling, optimization and computer-based control of a power plant boiler. PhD thesis, State University of New York at Binghamton,1996.
[20] R. Chang, Using information technology to advance the SCADA/EMS design in a power plant.PhD thesis, University of Florida, 1996.
[21] S .A. Paul, PID controller performance assessment based on closed-loop response data. PhD thesis, University of California, Santa Barbara, 1999.
[22] Q .Yan, Integration of process design and control: system representation, operability evaluation and control strategy development for designing an optimal process. PhD thesis,Wayne State University, 2000.
[23] B .V .Bernard, Mathematical modelling, optimization and computer-based control of a power plant boiler. PhD thesis, State University of NewYork at Binghamton,1996.
[24] R. Chang, Using information technology to advance the SCADA/EMS design in a power plant.PhD thesis, University of Florida, 1996.
[25] S .A. Paul, PID controller performance assessment based on closed-loop response data. PhD thesis, University of California, San
[26] Q .Yan, Integration of process design and control: system representation, operability evaluation and control strategy development for designing an optimal process. PhD thesis,Wayne State University, 2000.
[27] R.S. W .Kramer, et.al.," Intelligent ontrol for large scale systems," in Proceedings of the American Control Conference, vol.2, pp .1308-1312, American Control Conference, 1992.
[28] M.W .S. Heydt, et.al.,"An intelligent power generation control system," in ASME Winter Annual Meeting, (New Orleans) , pp . 151 -156, ASME, 1993.
[29] R.Shoureshi, H .C .L i,and R .Kramer,"Design of advanced feedback control system for electric power generation," in Proceeding of the American Control Conference,(Chicago,USA) ,pp .4421 -4424,Jun.2000.
[30] R. Shoureshi and B. H. et.al.,"Neural-based generation control for highly varying and uncertain loads," in IEEE 2001 PPT conference, (Porto,Portugal) , Sept.2001.
[31]孟祥萍,滑模变结构控制及其在自动发电控制中的应用研究.东北大学博士学位论文,2000.
[32]许继刚,火电厂控制一管理集成模型及系统的研究,华中科技大学博士学位论文,2001.
[33]张师帅,基于辐射能信号反馈的锅炉燃烧与机组负荷控制,华中科技大学博士学位论文,2002.
[34]黄继民.美国PJM电力市场探析.国际电力.2002,60):2427
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