600MW直接空冷机组防冻节能优化运行控制策略研究
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摘要
为了满足直接空冷机组冬季安全、经济运行的要求,通过分析风机电耗率和机组背压之间的关系,结合机组历史运行数据、空冷岛温度分布规律、防冻控制方法,建立了经济运行背压模型,给出了防冻控制方法,并制订了兼顾机组节能运行的优化控制策略。该控制策略在600 MW直接空冷机组上实施后,机组冬季运行背压平均可降低1 kPa,在满足机组防冻安全的基础上实现了经济运行。
In order to meet the requirements of the safety and economic operation of the direct air cooling unit in winter, through the analysis of the relationship between the wind power consumption rate and the back pressure of the unit, the back pressure model of the economic operation was established by combining the historical operation data of the unit, the temperature distribution law of the air cooling island and the antifreezing control methods. The antifreezing control method was formulated. The optimal control strategy of unit antifreezing and energy saving operation were taken into account. After the implementation of the control strategy on 600 MW direct air cooling unit, the back pressure of the unit in winter could be reduced by 1 kPa, and the economic operation was realized on the basis of meeting the safety of the unit′s anti freezing.
In order to meet the requirements of the safety and economic operation of the direct air cooling unit in winter, through the analysis of the relationship between the wind power consumption rate and the back pressure of the unit, the back pressure model of the economic operation was established by combining the historical operation data of the unit, the temperature distribution law of the air cooling island and the antifreezing control methods. The antifreezing control method was formulated. The optimal control strategy of unit antifreezing and energy saving operation were taken into account. After the implementation of the control strategy on 600 MW direct air cooling unit, the back pressure of the unit in winter could be reduced by 1 kPa, and the economic operation was realized on the basis of meeting the safety of the unit′s anti freezing.
引文
[1] Joo, Jeong A. Preventing Freezing of Condensate inside Tubes of Air-Cooled Condenser:US3424235[P].1999-02-18.
[2] Zanobini A. Formation and development of noncondens able gases in air cooled steam condensers[J]. Quaderni Pignone, 1982, 34(1):39-45.
[3] Bracco S, Caligaris O, Trucco A. Mathematical models ofair-cooledcondensersforthermoelectric) units[J].HeatTransferEngineering,1998,10(2):15-20.
[4] Fabbri G. Analysis of the noncondensable contaminant accumulation in single-pass air-cooled condensers[J].Heat transfer engineering, 1997, 18(2):50-60.
[5]张学镭,周兰欣,陈海平,等.基于模糊层次分析法的直接空冷凝汽器防冻性能监测[J].动力工程学报,2012,32(10):809-814.
[6]王忠,赵雁,冯润富,等.内蒙古上都电厂2×600 MW空冷机组防冻措施[J].内蒙古电力技术,2005,23(4):1-3.
[7]王利宁,张毅龙.空冷机组空冷岛防冻及冬季背压优化项目浅析[J].内蒙古科技与经济,2011(18):130-132.
[8]耿群,王艳丽.600 MW超临界直接空冷机组空冷系统防冻技术改造[J].内蒙古电力技术,2012,30(2):94-96.
[9]张锋锋,潘云珍,焦晓峰,等.极度寒冷地区直接空冷机组空冷岛的防冻措施[J].内蒙古电力技术,2011,29(4):99-100.
[10]程通锐.直接空冷机组防冻机理分析[D].北京:华北电力大学,2016.
[2] Zanobini A. Formation and development of noncondens able gases in air cooled steam condensers[J]. Quaderni Pignone, 1982, 34(1):39-45.
[3] Bracco S, Caligaris O, Trucco A. Mathematical models ofair-cooledcondensersforthermoelectric) units[J].HeatTransferEngineering,1998,10(2):15-20.
[4] Fabbri G. Analysis of the noncondensable contaminant accumulation in single-pass air-cooled condensers[J].Heat transfer engineering, 1997, 18(2):50-60.
[5]张学镭,周兰欣,陈海平,等.基于模糊层次分析法的直接空冷凝汽器防冻性能监测[J].动力工程学报,2012,32(10):809-814.
[6]王忠,赵雁,冯润富,等.内蒙古上都电厂2×600 MW空冷机组防冻措施[J].内蒙古电力技术,2005,23(4):1-3.
[7]王利宁,张毅龙.空冷机组空冷岛防冻及冬季背压优化项目浅析[J].内蒙古科技与经济,2011(18):130-132.
[8]耿群,王艳丽.600 MW超临界直接空冷机组空冷系统防冻技术改造[J].内蒙古电力技术,2012,30(2):94-96.
[9]张锋锋,潘云珍,焦晓峰,等.极度寒冷地区直接空冷机组空冷岛的防冻措施[J].内蒙古电力技术,2011,29(4):99-100.
[10]程通锐.直接空冷机组防冻机理分析[D].北京:华北电力大学,2016.