变频技术在火电厂泵与风机系统的应用研究
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摘要
泵与风机在火电厂中应用极为广泛,它们的选型大都根据可能出现的最大负荷来制定;但通常情况下,由于机组很少满负荷运行,使得流量调节仅靠阀门或挡板来实现,而电机的功率却不变,造成了极大的浪费;如果能够根据实际需要来调节电机的转速,将大大减少无谓的消耗。本文从分析电机调速的诸多方法入手,指出对于鼠笼式电机,变频调速为最佳选择,并结合邯峰电厂凝结水泵和一次风机变频改造的实际成果,阐述变频改造过程中需要解决的问题和变频技术在节能降耗方面的显著成效,对于火电厂大功率高压电机的节能改造,具有一定的参考意义。
Pumps and fans are used widely in coal power plants.Their capcitys are chosen mostly according to possible maximum load.Normally,the flow control is reallized by damper or valve,since generatorsets are seldom running at full load.But the motors’electric power are constant,the power wastage is serious.If the speed of motors is controlled according to real need,the useless wastage could be reduced dramatically.This paper begins from manny ways of motor’s speed control and has pointed out variable frequency control is the best way for rat-cage motor. The problems to be settled during reform has been brought forward according to the experience of successful Condensat pump and Primary fan’s variable frequency reform in Hanfeng Power Plant, which can be helpful for other coal power plants in reform of big power motor’s energy saving .
Pumps and fans are used widely in coal power plants.Their capcitys are chosen mostly according to possible maximum load.Normally,the flow control is reallized by damper or valve,since generatorsets are seldom running at full load.But the motors’electric power are constant,the power wastage is serious.If the speed of motors is controlled according to real need,the useless wastage could be reduced dramatically.This paper begins from manny ways of motor’s speed control and has pointed out variable frequency control is the best way for rat-cage motor. The problems to be settled during reform has been brought forward according to the experience of successful Condensat pump and Primary fan’s variable frequency reform in Hanfeng Power Plant, which can be helpful for other coal power plants in reform of big power motor’s energy saving .
引文
[1]倪维斗,李政,薛元.以煤气化为核心的多联产能源系统-资源/能境/环境整体优化与可持续发展.中国工程科学,2000,(8):59～68
[2]国家信息中心. 2004年中国能源行业年度报告. 2004
[3]李政,倪维斗,潘克西.以煤气化为核心的多联产及其在我国未来能源中的战略意义.发电设备,2004 (3):117～120
[4]徐绿野,马济泉.风机和水泵的调速控制,发电设备2007(3):219～222
[5]赵利.风机和泵类负载调速变频器的选择,水利电力机械2007(4):56～59
[6]吴学文.高压变频器在火电厂的应用,电力设备2006(6):59～62
[7]张燕宾.变频器的控制方式及应用,电气时代,2005(10):138～139
[8]刘国起.利用变频器提高机泵转速实现节电,电世界,2005(7):305
[9]许大中.交流电机调速理论,浙江大学出版社,1999
[10]丁峰军.高压变频器的选用方法,电工技术,2005(7):44～47
[11]郭世明等.电力电子技术,西南文通大学出版社.2002.
[12]杨涛王永涛.浅析变频器在火力发电厂中的应用,贵州电力技术,2005(5):47～48
[13]李志民等.同步电动机调速系统,机械工业出版让,1999
[14]孔凡场,侯茂春.变频器在电机控制中的应用,吉林电力,2005(11):47～49
[15]李芳芹任建兴.变频技术在电厂泵与风机系统中应用的节能分析,上海电力学院学报.2005(3):17～20
[16]吴永海,王芸华.邯峰电厂凝结水泵改变频可行性报告
[17]李凤鸣.凝结水泵变频改造,山西电力2004(6):48～50
[18]米立海.邯峰电厂凝泵变频一拖二改造
[19]刘军强.变频技术在凝结水泵上的应用,节能技术2006(3):185～187
[20]邹胜.刘家梅变频应用于电厂锅炉风机,电气节能2006(3):65～66
[21]张艳朵.邯峰电厂一次风机变频改造方案
[22]王建全.邯峰电厂一次风机改变频可行性报告
[23]A.K.PRADEEP,S.M.SHAFRUZ.A control law that achieves simutaneous tracking for a group of systems in fiite time.International Journal of Control, 1992(12)56～57
[24]Kolar J.W,Status of the Techniques of the Three-Phase PWM Rctifier Systems with Low Effects on the Mains,Profetional Education Tutouial Workbook(Tutouial 4) of the 31st IEEE Power Electronics SpecialistsConference,Galway,Ireland, 2000(6)18～23.
[25]Kolar J.W,Ertl H, and Zach F.C,Caculation of the Passive and Active Component Stresses of Three-Phase PWM Converter Systems with High Pulse Rate,Proceedings of the 3st European Conference on Power Electionics and Applications,Aachen,Germany, 1989(10)13～115.
[26]Zwimpfer P,and Strmmler H,Modulation and Realization of a Novel Two-Stage Matrix Converter,Proceedings of the 6th Brazilian Power ElectronicsConferencd,Florianopolis,Brazli,2001(10)11～14.
[27]Orlowska-Kowalsk,LisT.,Szabat,k..Identification of The InductionMotor ParametersatStandstillusingSoftComPutingmethods.ComPle-theIntemationalJournal for ComPutation and Mathetics inElectrlcal and electric Engineering.2006 (l):181～194.
[27]ZingrerD.ProfunoF.LIPoT.etal.Adireet Field Oriented Controller for Induction Motor Drives Using TaPPed Stator WindingsIA]. Proeessing of the 1998IEEE 19th Armual Power Eleetronies Specialists Conferenee[C]. USA:IEEE,1998,855～865.
[28]R.wamkeue,I.Kamwa.Generalized modeling and unbalnaced fault simulation of saturaetd self-excited induetion generoatrs[J].Electrice Power System Research,2002,61:11～21.
[29]Feng-Fu Cheng,Sheng-NinaYeh,APPlication of fuzzy logic in the speed conrtol of AC sevro system and an intelligent inverter[J].IEEE Trna,1993,8(2)。
[30]Dae-WoongChung,Seung一KiSul,Analysis and comPensation of current measuerment error in vector- contolled AC motor drivers[J].IEEE Trnsaction on Industy APPlication 1998,2(l34).
[2]国家信息中心. 2004年中国能源行业年度报告. 2004
[3]李政,倪维斗,潘克西.以煤气化为核心的多联产及其在我国未来能源中的战略意义.发电设备,2004 (3):117～120
[4]徐绿野,马济泉.风机和水泵的调速控制,发电设备2007(3):219～222
[5]赵利.风机和泵类负载调速变频器的选择,水利电力机械2007(4):56～59
[6]吴学文.高压变频器在火电厂的应用,电力设备2006(6):59～62
[7]张燕宾.变频器的控制方式及应用,电气时代,2005(10):138～139
[8]刘国起.利用变频器提高机泵转速实现节电,电世界,2005(7):305
[9]许大中.交流电机调速理论,浙江大学出版社,1999
[10]丁峰军.高压变频器的选用方法,电工技术,2005(7):44～47
[11]郭世明等.电力电子技术,西南文通大学出版社.2002.
[12]杨涛王永涛.浅析变频器在火力发电厂中的应用,贵州电力技术,2005(5):47～48
[13]李志民等.同步电动机调速系统,机械工业出版让,1999
[14]孔凡场,侯茂春.变频器在电机控制中的应用,吉林电力,2005(11):47～49
[15]李芳芹任建兴.变频技术在电厂泵与风机系统中应用的节能分析,上海电力学院学报.2005(3):17～20
[16]吴永海,王芸华.邯峰电厂凝结水泵改变频可行性报告
[17]李凤鸣.凝结水泵变频改造,山西电力2004(6):48～50
[18]米立海.邯峰电厂凝泵变频一拖二改造
[19]刘军强.变频技术在凝结水泵上的应用,节能技术2006(3):185～187
[20]邹胜.刘家梅变频应用于电厂锅炉风机,电气节能2006(3):65～66
[21]张艳朵.邯峰电厂一次风机变频改造方案
[22]王建全.邯峰电厂一次风机改变频可行性报告
[23]A.K.PRADEEP,S.M.SHAFRUZ.A control law that achieves simutaneous tracking for a group of systems in fiite time.International Journal of Control, 1992(12)56～57
[24]Kolar J.W,Status of the Techniques of the Three-Phase PWM Rctifier Systems with Low Effects on the Mains,Profetional Education Tutouial Workbook(Tutouial 4) of the 31st IEEE Power Electronics SpecialistsConference,Galway,Ireland, 2000(6)18～23.
[25]Kolar J.W,Ertl H, and Zach F.C,Caculation of the Passive and Active Component Stresses of Three-Phase PWM Converter Systems with High Pulse Rate,Proceedings of the 3st European Conference on Power Electionics and Applications,Aachen,Germany, 1989(10)13～115.
[26]Zwimpfer P,and Strmmler H,Modulation and Realization of a Novel Two-Stage Matrix Converter,Proceedings of the 6th Brazilian Power ElectronicsConferencd,Florianopolis,Brazli,2001(10)11～14.
[27]Orlowska-Kowalsk,LisT.,Szabat,k..Identification of The InductionMotor ParametersatStandstillusingSoftComPutingmethods.ComPle-theIntemationalJournal for ComPutation and Mathetics inElectrlcal and electric Engineering.2006 (l):181～194.
[27]ZingrerD.ProfunoF.LIPoT.etal.Adireet Field Oriented Controller for Induction Motor Drives Using TaPPed Stator WindingsIA]. Proeessing of the 1998IEEE 19th Armual Power Eleetronies Specialists Conferenee[C]. USA:IEEE,1998,855～865.
[28]R.wamkeue,I.Kamwa.Generalized modeling and unbalnaced fault simulation of saturaetd self-excited induetion generoatrs[J].Electrice Power System Research,2002,61:11～21.
[29]Feng-Fu Cheng,Sheng-NinaYeh,APPlication of fuzzy logic in the speed conrtol of AC sevro system and an intelligent inverter[J].IEEE Trna,1993,8(2)。
[30]Dae-WoongChung,Seung一KiSul,Analysis and comPensation of current measuerment error in vector- contolled AC motor drivers[J].IEEE Trnsaction on Industy APPlication 1998,2(l34).