COUNTERMEASURES FOR MAIN STEAM OVERTEMPERATURE OF 600 MW SUPERCRITICAL UNIT DURING TURBINE SPEED-UP

HUANG Wei; ZHANG Jian-ling; PENG Min; HUANG Lai; GUO Wei-hua; He Jun-min Hunan Electric Power Test and Research Institute; Changsha 410007

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COUNTERMEASURES FOR MAIN STEAM OVERTEMPERATURE OF 600 MW SUPERCRITICAL UNIT DURING TURBINE SPEED-UP

更新时间：2025-09-28

- COUNTERMEASURES FOR MAIN STEAM OVERTEMPERATURE OF 600 MW SUPERCRITICAL UNIT DURING TURBINE SPEED-UP
- Thermal Power Generation Vol. 38, Issue 5, Pages: 42-44(2009)
- 作者机构：
  
  湖南省电力公司试验研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK229.2
- Published：2009
- 稿件说明：
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HUANG Wei, ZHANG Jian-ling, PENG Min, et al. COUNTERMEASURES FOR MAIN STEAM OVERTEMPERATURE OF 600 MW SUPERCRITICAL UNIT DURING TURBINE SPEED-UP[J]. Thermal power generation, 2009, 38(5): 42-44.
DOI：

HUANG Wei, ZHANG Jian-ling, PENG Min, et al. COUNTERMEASURES FOR MAIN STEAM OVERTEMPERATURE OF 600 MW SUPERCRITICAL UNIT DURING TURBINE SPEED-UP[J]. Thermal power generation, 2009, 38(5): 42-44. DOI：

摘要

某超临界600MW机组冲转时存在锅炉侧主蒸汽温度高、压力低的问题

与汽轮机要求的冲转参数不匹配。对此

提出了维持锅炉燃油量12～13t/h、冲转时退出给水流量低保护、给水流量降至160～180t/h、机组冲转随机投入高低压加热器、给水温度提高到200℃以上等措施

实施后

可控制主蒸汽温度为400℃

主蒸汽压力为6～8.73MPa

锅炉水冷壁壁温在350℃以内

效果良好。解决了冲转时主蒸汽温度偏高的问题

节约了燃油

具有很好的经济性和安全性。

Abstract

A 600 MW unit supercritical unit encountered the problem of higher temperature and lower pressure of main steam on boiler side during turbine speed-up

which do not fit in with the required parameters during turbine speed-up.To address this problem

the following measures are proposed:keep the fuel consumption at 12-13t/h and stop low feedwater protection during speed-up.Reduce the feedwater flow rate to 160-180t/h.Put HP and LP heater at soon as the turbine starts to speed up

with the feedwater temperature up to 200 ℃.After the above measures have been implemented

main steam temperature is controlled at 400 ℃

main steam pressure 6-8.73Mpa and boiler water wall temperature below 350 ℃.In this way

not only main steam overtemperature problem is solved but also fuel is saved.It has both economy and safety benefits.

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ESTABLISHMENT AND ANALYSIS OF DYNAMIC MATHEMATICAL MODEL FOR EMULATION SYSTEM OF SUPERCRITICAL 600 MW ONCE-THROUGH BOILER UNIT

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