大型燃煤电站循环水系统运行优化研究
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摘要
根据目前国内外普遍存在循环水系统运行性能达不到设计值的现象,本文将对循环水系统进行整体优化。本文对循环水系统进行整体建模,根据现场运行状况分析提出了“基于最优真空的最小供水量”,并以此为依据,结合电厂普遍应用的循环水泵节能改造方法,提出了“循环水泵多速交叉并联”理论,并利用循环水泵的组合优化的遗传算法对机组真空进行寻优求解。结合某电厂600MW机组循环水系统的实际运行情况,在其它运行参数不变的情况下,改变循环水泵的运行方式,分别得到各自的单元制和扩大单元制工作方式下的运行优化结果,以此作为指导电厂机组运行的标准。
According to the phenomenon that running performance of the circulating water system can't reach the design value at home and abroad,the whole circulating water system will be optimized in this paper.The integral model of circulating water system will be established.The 'minimum supplied water matching optimal vacuum'will be pick up in this paper and a 'mix-speed operation of the pump unit' will be taken as a effective energy saving reconstruction.This paper will take the unit vacume as target function,and the optimum process will be based on the Genetic Algorithm.Combining with the actual running condition about 600MW unit of one power plant,the operation method of circulating water pump will be changed when other operational factors keep changeless, therefore,the optimum operation result about unit plant and extended unit plaot will be gained respectively,and these results can be used to guide unit operation accurately.
According to the phenomenon that running performance of the circulating water system can't reach the design value at home and abroad,the whole circulating water system will be optimized in this paper.The integral model of circulating water system will be established.The 'minimum supplied water matching optimal vacuum'will be pick up in this paper and a 'mix-speed operation of the pump unit' will be taken as a effective energy saving reconstruction.This paper will take the unit vacume as target function,and the optimum process will be based on the Genetic Algorithm.Combining with the actual running condition about 600MW unit of one power plant,the operation method of circulating water pump will be changed when other operational factors keep changeless, therefore,the optimum operation result about unit plant and extended unit plaot will be gained respectively,and these results can be used to guide unit operation accurately.
引文
[1]李青,公维平.火力厂节能技术及其应用.北京:中国电力出版社.2007,413-489
[2]郑李坤,顾昌,闫桂焕.运行参数变化对凝汽器真空影响的探讨.汽轮机技术,2002,44(6):362-364
[3]张贵安.影响凝汽器传热端差的因素及对应措施[J].能源与环境,2004,(1):29-31
[4]Scott N.Peterson,On-line Condenser Performance Monitoring System,Power Conference,1995,57(2),560-565,
[5]J.Piskorowski,G.Beckett R.Bell,"Condenser Performance Test and Back-Pressure Improvement",EPRI,CS.5729,1988,4
[6]曾鸣,杜作敏.20万千瓦汽轮机循环水系统的优化运行.节能,1989,1:30-33
[7]葛晓霞,廖国钧.淮南电厂三号机循环水泵的优化调整.电站辅机,1993,3:14-18
[8]韦红旗,睢刚.母管制循环水系统优化运行的数学模型.东南大学学报,1998,28(a11):79-85
[9]胡洪华,于新颖.上海外高桥电厂2号机组汽轮机冷端参数优化实验研究.电站辅机,1999,(3):16-24
[10]闫桂焕,顾昌.300MW机组循环水系统优化运行的研究.汽轮机技术,2002,44(6):345-347,368
[11]李保亮.火电机组冷端系统运行经济性分析及性能优化:[硕士学位论文].北京:华北电力大学,2006
[12]江宁,曹祖庆.用标准传热系数分析水侧赃污、汽侧清洁程度.热力发电,2001,30(2):43-45
[13]石书雨.火力发电厂冷端系统分析:[硕士学位论文].北京:华北电力大学,2008
[14]郭丙然.火电厂计算机分析.第一版.北京:水利电力出版社,1991,1990册
[15]沈士一,庞立云等.汽轮机原理.北京:中国电力出版社,2005,441-445
[16]齐复东,贾树本,马义伟.电站凝汽设备和冷却系统,北京:水利电力出版社,1990
[17]安连锁.泵与风机.北京:中国电力出版社,2001
[18]杨善让.汽轮机凝汽设备及运行管理.北京:水利电力出版社,1993,1890册
[19]B.Z.Elektronika.Monitoring of Content in a Mixture Removed from Condensers in Application to Steam Turbine Diagnostics.Proceedings of IJPGC2000,2000
[20]Menell D.A.en.An Experimental Study of Low Pressure Filmwise Condensation on A Small In-line Tube Bank.Proc Instn Mech Engrs.2001,215(A2)
[21]王伟,孙奉仲,王凯等.基于现场数据确定凝汽器真空偏低治理方案的判据及分析.汽轮机技术,2006,48(3):190-192
[22]肖登文.影响凝汽器性能的因素分析.广东电力,2008,21(4):61-62,65
[23]王娟.电价、煤价、凝汽器真空对发电厂经济效益的影响及其分析.青海电力,2008,27(1):1-3,18
[24]董丽娟,张润盘,张春发等.凝汽器压力变化影响机组功率增量计算的研究.华北电力大学学报,2007,34(1):70-73,81
[25]吴民强.泵与风机节能技术,北京:水利电力出版社,1994
[26]乐俊,菅从光,张辉.火电厂循环水系统优化运行研究.热力发电,2008,37(6):9-12
[27]邢希东.600MW火电机组降低厂用电率措施.中国电力,2007,40(9):60-64
[28]朱乃刚,王丽华.热电厂循环水泵节能优化改造.山东理工大学学报(自然科学版).2008,22(3):108-110
[29]靖长财.600MW机组循环水系统经济运行分析及对策.电站辅机,2007,28(4):3-5
[30]管荣国,朱荣生等.电厂循环水泵节能组合措施.水泵技术,2008(3):34-35,40
[31]王小平,曹立明.遗传算法理论应用与软件实现.西安:西安交通大学出版社,2002
[32]Aytug H,Korhler GJ.Stopping Criteria for finite length genetic algorithms Informs Journal on computing,1996
[33]张文修,梁怡.遗传算法的数学基础.西安交通大学出版社,2005
[34]周明,孙树栋.遗传算法原理及应用.北京:国防工业出版社,2001
[35]初文科.基于遗传算法的试题库设计与组卷方法研究:[硕士学位论文].山东:山东师范大学,2008
[36]陈国年.发电厂能量价值分析原理及应用.江苏电机工程,2002,21(6):1-4
[37]罗映红.遗传算法求解组合优化问题研究.甘肃科学学报,1997,9(2):46-49
[38]马立肖,王江晴.遗传算法在组合优化问题中的应用,2005,27(7):72-73,82
[39]J. Piskorowski,et al. "Condenser Performance Test and Back-Pressure Improvement",EPRI,CS.5729,1988,4
[40]J.A,et al.Predicting and Improving Cooling Tower Performance,Power Engineering,1990,3.
[41]Cooling Tower Performance Prediction and Improvement,Volume 1,Applications Guide,EPRI GS-6370,1989,11
[42]M,Stojakovic,et al.Steam Power plant Efficiency Enhancement by Means of "Cold-End"Optimization During Exploitaton. Proceedings of the American Power Conference,1995(2):560～565
[43]T.E.Holt.Case Study:Ozonation of a 10000 Ton Cooling Tower With Near Zaro Blow-down,Proceedings of the American Power Conference,1993,55(2):1038~1042
[2]郑李坤,顾昌,闫桂焕.运行参数变化对凝汽器真空影响的探讨.汽轮机技术,2002,44(6):362-364
[3]张贵安.影响凝汽器传热端差的因素及对应措施[J].能源与环境,2004,(1):29-31
[4]Scott N.Peterson,On-line Condenser Performance Monitoring System,Power Conference,1995,57(2),560-565,
[5]J.Piskorowski,G.Beckett R.Bell,"Condenser Performance Test and Back-Pressure Improvement",EPRI,CS.5729,1988,4
[6]曾鸣,杜作敏.20万千瓦汽轮机循环水系统的优化运行.节能,1989,1:30-33
[7]葛晓霞,廖国钧.淮南电厂三号机循环水泵的优化调整.电站辅机,1993,3:14-18
[8]韦红旗,睢刚.母管制循环水系统优化运行的数学模型.东南大学学报,1998,28(a11):79-85
[9]胡洪华,于新颖.上海外高桥电厂2号机组汽轮机冷端参数优化实验研究.电站辅机,1999,(3):16-24
[10]闫桂焕,顾昌.300MW机组循环水系统优化运行的研究.汽轮机技术,2002,44(6):345-347,368
[11]李保亮.火电机组冷端系统运行经济性分析及性能优化:[硕士学位论文].北京:华北电力大学,2006
[12]江宁,曹祖庆.用标准传热系数分析水侧赃污、汽侧清洁程度.热力发电,2001,30(2):43-45
[13]石书雨.火力发电厂冷端系统分析:[硕士学位论文].北京:华北电力大学,2008
[14]郭丙然.火电厂计算机分析.第一版.北京:水利电力出版社,1991,1990册
[15]沈士一,庞立云等.汽轮机原理.北京:中国电力出版社,2005,441-445
[16]齐复东,贾树本,马义伟.电站凝汽设备和冷却系统,北京:水利电力出版社,1990
[17]安连锁.泵与风机.北京:中国电力出版社,2001
[18]杨善让.汽轮机凝汽设备及运行管理.北京:水利电力出版社,1993,1890册
[19]B.Z.Elektronika.Monitoring of Content in a Mixture Removed from Condensers in Application to Steam Turbine Diagnostics.Proceedings of IJPGC2000,2000
[20]Menell D.A.en.An Experimental Study of Low Pressure Filmwise Condensation on A Small In-line Tube Bank.Proc Instn Mech Engrs.2001,215(A2)
[21]王伟,孙奉仲,王凯等.基于现场数据确定凝汽器真空偏低治理方案的判据及分析.汽轮机技术,2006,48(3):190-192
[22]肖登文.影响凝汽器性能的因素分析.广东电力,2008,21(4):61-62,65
[23]王娟.电价、煤价、凝汽器真空对发电厂经济效益的影响及其分析.青海电力,2008,27(1):1-3,18
[24]董丽娟,张润盘,张春发等.凝汽器压力变化影响机组功率增量计算的研究.华北电力大学学报,2007,34(1):70-73,81
[25]吴民强.泵与风机节能技术,北京:水利电力出版社,1994
[26]乐俊,菅从光,张辉.火电厂循环水系统优化运行研究.热力发电,2008,37(6):9-12
[27]邢希东.600MW火电机组降低厂用电率措施.中国电力,2007,40(9):60-64
[28]朱乃刚,王丽华.热电厂循环水泵节能优化改造.山东理工大学学报(自然科学版).2008,22(3):108-110
[29]靖长财.600MW机组循环水系统经济运行分析及对策.电站辅机,2007,28(4):3-5
[30]管荣国,朱荣生等.电厂循环水泵节能组合措施.水泵技术,2008(3):34-35,40
[31]王小平,曹立明.遗传算法理论应用与软件实现.西安:西安交通大学出版社,2002
[32]Aytug H,Korhler GJ.Stopping Criteria for finite length genetic algorithms Informs Journal on computing,1996
[33]张文修,梁怡.遗传算法的数学基础.西安交通大学出版社,2005
[34]周明,孙树栋.遗传算法原理及应用.北京:国防工业出版社,2001
[35]初文科.基于遗传算法的试题库设计与组卷方法研究:[硕士学位论文].山东:山东师范大学,2008
[36]陈国年.发电厂能量价值分析原理及应用.江苏电机工程,2002,21(6):1-4
[37]罗映红.遗传算法求解组合优化问题研究.甘肃科学学报,1997,9(2):46-49
[38]马立肖,王江晴.遗传算法在组合优化问题中的应用,2005,27(7):72-73,82
[39]J. Piskorowski,et al. "Condenser Performance Test and Back-Pressure Improvement",EPRI,CS.5729,1988,4
[40]J.A,et al.Predicting and Improving Cooling Tower Performance,Power Engineering,1990,3.
[41]Cooling Tower Performance Prediction and Improvement,Volume 1,Applications Guide,EPRI GS-6370,1989,11
[42]M,Stojakovic,et al.Steam Power plant Efficiency Enhancement by Means of "Cold-End"Optimization During Exploitaton. Proceedings of the American Power Conference,1995(2):560～565
[43]T.E.Holt.Case Study:Ozonation of a 10000 Ton Cooling Tower With Near Zaro Blow-down,Proceedings of the American Power Conference,1993,55(2):1038~1042