Experimental study on dynamic characteristics of direct air-cooling system in a 600MW unit

LIU Wenhua; LI Gaochao; YAN Yongqiang; CHEN Shengli; JING Tao; LU Kai; WAN Chao

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Experimental study on dynamic characteristics of direct air-cooling system in a 600MW unit

更新时间：2025-09-28

- Experimental study on dynamic characteristics of direct air-cooling system in a 600MW unit
- Thermal Power Generation Vol. 43, Issue 3, Pages: 76-78(2014)
- 作者机构：
  
  1. 内蒙古霍煤鸿骏铝电公司
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621
- Published：2014
- 稿件说明：
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LIU Wenhua, LI Gaochao, YAN Yongqiang, et al. Experimental study on dynamic characteristics of direct air-cooling system in a 600MW unit[J]. Thermal power generation, 2014, 43(3): 76-78.
DOI：

LIU Wenhua, LI Gaochao, YAN Yongqiang, et al. Experimental study on dynamic characteristics of direct air-cooling system in a 600MW unit[J]. Thermal power generation, 2014, 43(3): 76-78. DOI：

摘要

通过对某600MW机组直接空冷系统在不同空冷风机频率、不同机组负荷以及不同环境温度下动态特性的试验研究发现:空冷风机运行频率越低

机组背压随着环境温度变化的速率越大;在风机运行频率不变时

环境温度越高

机组背压随负荷变化率越大;在环境温度不变时

风机频率越低

机组背压随负荷变化率越大;机组负荷不变时

环境温度越低

空冷风机频率的变化对机组背压的影响越小。

Abstract

The effects of factors like air-cooling fan's frequency

unit load and ambient temperature on dynamic characteristics of the direct air-cooling system in a 600MW unit was experimentally studied.The results showed that

the lower the air-cooling fan's frequency

the higher the variation speed of turbine back pressure against the ambient temperature;with a constant air-cooling fan's frequency

the variation rate of turbine pressure against the unit load increased/decreased with the ambient temperature;at a constant ambient temperature

the variation rate of turbine back pressure against the unit load showed an opposite change trend with the air-cooling fan's frequency; when the unit load was kept constant

the lower ambient temperature

the less effect of air-cooling fan's frequency on the turbine back pressure.

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