中国电力 ›› 2015, Vol. 48 ›› Issue (10): 12-17.DOI: 10.11930.2015.10.12

• 发电 • 上一篇    下一篇

600 MW间接空冷机组汽动引风机汽源切换经济性分析

郭俊山1,司风琪1,邵壮1,祝康平2   

  1. 1. 东南大学 能源与环境学院,江苏 南京 210096;
    2. 中电神头发电有限责任公司,山西 朔州 036800
  • 收稿日期:2015-04-29 出版日期:2015-10-25 发布日期:2015-11-25
  • 作者简介:郭俊山(1989—),男,山东潍坊人,硕士研究生,从事大型火电机组性能优化研究。E-mail: guo_junshan@seu.edu.cn

Economic Analysis on Source Steam Switching of Steam-Driving Induced Draft Fan for 600-MW Indirect Air-Cooling Units

GUO Junshan1, SI Fenqi1, SHAO Zhuang1, ZHU Kangping2   

  1. 1. School of Energy and Environment, Southeast University, Nanjing 210096, China;
    2. Shentou Power Generation Co., Ltd., Shuozhou 036800, China
  • Received:2015-04-29 Online:2015-10-25 Published:2015-11-25

摘要: 以某600 MW空冷机组汽动引风机系统为研究对象,建立了小汽机凝汽器热力计算模型和汽源经济性计算模型。通过计算不同季节汽动引风机系统采用不同汽源时经济性变化情况,提出了小汽机汽源随季节变化的优化运行思路。实际算例表明:对象机组汽动引风机系统汽源切换对机组经济性有明显影响,在秋冬季节采用汽机五段抽汽作为小汽机汽源可使机组供电煤耗率下降约0.9 g/(kW?h)。

关键词: 空冷机组, 汽动引风机, 汽源, 经济性分析

Abstract: Taking the steam-driving induced draft fan system of a 600-MW air-cooling unit as an example, the models for small turbine condenser thermal calculation and source steam economic calculation are established respectively. Through the calculation of the economic differences of the steam-driving induced draft fan system using different source steam in different seasons, an optimization method is put forward that the source steam of the small turbine should be changed with the change of the seasons. The calculation results show that the steam-driving induced draft fan system using different source steam has obvious influence on the unit economy, and compared with the fourth stage extraction steam, the net coal consumption rate can be lowered by 0.9 g/(kW·h) when the small turbine is driven by the fifth stage extraction steam in winter and autumn.

Key words: air-cooling unit, steam-driving induced draft fan, source steam, the fifth stage extraction steam

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