DCS系统上凝结水升压泵的变频控制改造

华电技术 ›› 2009, Vol. 31 ›› Issue (8): 51-53.

DCS系统上凝结水升压泵的变频控制改造

施政

望亭发电厂，江苏苏州 215000

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-08-25

Variable frequency reformation of condensate boost pump in DCS system

SHI Zheng

Wangting Power Plant, Suzhou 215000, China

Received:1900-01-01 Revised:1900-01-01 Published:2009-08-25

摘要/Abstract

摘要： 凝结水升压泵改造成变频调速泵运行后，在DCS系统上实现了对除氧器水位的自动控制，分析了其调节特性自动回路与原有方式不同。通过严格的方案设计讨论，编写技术安全措施，在机组的大小修中实施和后期的调试，成功地投入了变频自动。结果表明，在电厂主要辅机设备上采用变频调节设备，并且合理设计调节自动回路，能保证不降低机组运行的可靠性和安全性，同时具有投资少，见效快的特点，对降低厂用电率和节能具有积极的作用。

关键词: 凝升泵变频, 除氧器水位, 自动控制, 联锁切换

Abstract: The condensate boost pump had been reformed by using of variable frequency speed control technology. After the reformation, the automatic control of the level of oxygen extractor was realized on DCS system. The difference between its reformed automatic adjustment circuit and original one was analyzed. Based on strict discussion of scheme design, the technical safety measures had been compiled, and the measures were implemented when the unit was overhaul or current repair, and the later debug was carried out, then the variable frequency automation had been put operation successfully. The results show that adopting the variable frequency controlled devices in the main auxiliaries of power plant with rational designed adjustment automatic circuit could ensure the reliability and safety of the unit operation to be not reduced, and this reformation has advantage of less input and quick results, and has active effects for energysaving and reducing the house service consumption rate.

Key words: variable frequency speed control of condensate boost pump, level of oxygen extractor, automatic control, interlock switching

施政. DCS系统上凝结水升压泵的变频控制改造[J]. 华电技术, 2009, 31(8): 51-53.

SHI Zheng. Variable frequency reformation of condensate boost pump in DCS system[J]. Huadian Technology, 2009, 31(8): 51-53.

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