660MW超超临界机组汽动引风机并列与运行
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摘要
汽动引风机以其无启动电流、低厂用电率和高效调节等优点,逐渐在新建机组中得到应用。以国内某新建超超临界机组汽动引风机为研究对象,根据汽动引风机及其管路特性曲线,分析风机并列的最佳工况,介绍了汽动引风机的并列方法,以及风机并列运行后的运行策略。针对汽动引风机运行中存在的裕量不足、排汽压力高和调节特性差等问题,进行原因分析和控制逻辑优化,确保机组运行的安全性和稳定性。
The steam-driven induced draft fan has the advantages of no starting current, low auxiliary power ratio and efficient adjustment and it is gradually got applied in newly-built units. In this paper, the steam-driven induced draft fan of a new ultra-supercritical unit is taken as the study object. According to the characteristic curves of the fan and the pipeline, the optimal parallel working conditions are analyzed, and the parallel method and the operation strategy for postparallel running are presented. Aiming at the problems of insufficient margin, high exhaust pressure and poor regulation characteristics in the operation of the fan, the cause analysis and the control logic optimization are carried out to ensure the safety and stability of the unit.
The steam-driven induced draft fan has the advantages of no starting current, low auxiliary power ratio and efficient adjustment and it is gradually got applied in newly-built units. In this paper, the steam-driven induced draft fan of a new ultra-supercritical unit is taken as the study object. According to the characteristic curves of the fan and the pipeline, the optimal parallel working conditions are analyzed, and the parallel method and the operation strategy for postparallel running are presented. Aiming at the problems of insufficient margin, high exhaust pressure and poor regulation characteristics in the operation of the fan, the cause analysis and the control logic optimization are carried out to ensure the safety and stability of the unit.
引文
[1]李中存,徐刚华,杨美聪,等.超超临界燃煤发电机组大气污染物超低排放方案选择[J].发电设备,2015,29(3):234-236.LI Zhongcun,XU Ganghua,YANG Meicong,et al.Solution selection for ultra-low emission of air pollutants from ultrasupercritical coal-fired units[J].Power Equipment,2015,29(3):234-236.
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[3]杨群发,侯剑雄,陈灌明.600 MW级湿式电除尘器工程调试与运行调整研究[J].中国电力,2015,48(8):20-26.YANG Qunfa,HOU Jianxiong,CHEN Guanming.Commissioning test and tuning of 600 MW class wet electrostatic precipitators[J].Electric Power,2015,48(8):20-26.
[4]孙叶柱,孙伟鹏,江永.1 036 MW机组汽动引风机控制策略优化及其深度节能研究[J].中国电机工程学报,2011,31(1):217-221.SUN Yezhu,SUN Weipeng,JIANG Yong.Research on optimizing the control strategy and deepening the energy conservation of steam-driven draft fans in 1 036 MW unit[J].Proceedings of the CSEE,2011,31(1):217-221.
[5]陈小强,罗志浩,尹峰,等.背压式汽动引风机调试[J].中国电力,2012,45(8):59-63.CHEN Xiaoqiang,LUO Zhihao,YIN Feng,et al.Debugging for back pressure steam-driven induced draft fan[J].Electric Power,2012,45(8):59-63.
[6]马晓珑,陈书平,李学忠,等.汽动引风机在超超临界1 000MW机组中的应用[J].热力发电,2011,40(6):75-78.MA Xiaolong,CHEN Shuping,LI Xuezhong,et al.Applicaton of turbine-driven induced draft fan for ultra-super critical 1 000MW unit[J].Thermal Power Generation,2011,40(6):75-78.
[7]范永春,吴阿峰.1 000 MW燃煤机组锅炉汽动引风机驱动汽源选择[J].中国电力,2012,44(12):37-41.FAN Yongchun,WU Afeng.Selection of resources for turbinedriven induced fan in 1 000 MW coal fired unit[J].Electric Power,2012,44(12):37-41.
[8]何川,郭立君.泵与风机[M].北京:中国电力出版社,2008.
[2]徐钢,许诚,杨勇平,等.电站锅炉余热深度利用及尾部受热面综合优化[J].中国电机工程学报,2013,33(14):1-8.XU Gang,XU Cheng,YANG Yongping,et al.Deep utilization of exhaust heat and comprehensive optimization of tail heating surfaces for utility boilers[J].Proceedings of the CSEE,2013,33(14):1-8.
[3]杨群发,侯剑雄,陈灌明.600 MW级湿式电除尘器工程调试与运行调整研究[J].中国电力,2015,48(8):20-26.YANG Qunfa,HOU Jianxiong,CHEN Guanming.Commissioning test and tuning of 600 MW class wet electrostatic precipitators[J].Electric Power,2015,48(8):20-26.
[4]孙叶柱,孙伟鹏,江永.1 036 MW机组汽动引风机控制策略优化及其深度节能研究[J].中国电机工程学报,2011,31(1):217-221.SUN Yezhu,SUN Weipeng,JIANG Yong.Research on optimizing the control strategy and deepening the energy conservation of steam-driven draft fans in 1 036 MW unit[J].Proceedings of the CSEE,2011,31(1):217-221.
[5]陈小强,罗志浩,尹峰,等.背压式汽动引风机调试[J].中国电力,2012,45(8):59-63.CHEN Xiaoqiang,LUO Zhihao,YIN Feng,et al.Debugging for back pressure steam-driven induced draft fan[J].Electric Power,2012,45(8):59-63.
[6]马晓珑,陈书平,李学忠,等.汽动引风机在超超临界1 000MW机组中的应用[J].热力发电,2011,40(6):75-78.MA Xiaolong,CHEN Shuping,LI Xuezhong,et al.Applicaton of turbine-driven induced draft fan for ultra-super critical 1 000MW unit[J].Thermal Power Generation,2011,40(6):75-78.
[7]范永春,吴阿峰.1 000 MW燃煤机组锅炉汽动引风机驱动汽源选择[J].中国电力,2012,44(12):37-41.FAN Yongchun,WU Afeng.Selection of resources for turbinedriven induced fan in 1 000 MW coal fired unit[J].Electric Power,2012,44(12):37-41.
[8]何川,郭立君.泵与风机[M].北京:中国电力出版社,2008.