Key points analysis and control for start-up process of a 1 000 MW  double-reheat unit

LIAO Junlin; SONG Xiaohui; WANG Tao; WANG Yang

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Key points analysis and control for start-up process of a 1 000 MW double-reheat unit

更新时间：2025-09-28

- Key points analysis and control for start-up process of a 1 000 MW double-reheat unit
- Thermal Power Generation Issue 7, (2017)
- 作者机构：
  
  1. 西安热工研究院有限公司,陕西,西安,710054
  2. 中国华能集团清洁能源技术研究院有限公司,陕西,西安,710032
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK267
- Published Online：02 August 2017，
  
  Published：2017
- 稿件说明：
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LIAO Junlin, SONG Xiaohui, WANG Tao, et al. Key points analysis and control for start-up process of a 1 000 MW double-reheat unit[J]. Thermal power generation, 2017, (7).
DOI：

LIAO Junlin, SONG Xiaohui, WANG Tao, et al. Key points analysis and control for start-up process of a 1 000 MW double-reheat unit[J]. Thermal power generation, 2017, (7). DOI：

摘要

与一次再热机组相比，二次再热机组启动参数高、系统复杂，这对启动过程提出更高要求。以华能莱芜电厂1 000 MW机组为研究对象，通过分析启动过程的关键步骤以及启动前的检查内容，对启动过程中的关键点进行分析并提出相应的控制策略。结果表明，排汽温度、轴封系统及润滑油系统是影响启动的关键因素。均匀控制启动阶段各部件的温升，满足X准则和应力不超限是启动过程的关键点之一；润滑油系统科学合理的冲洗和节流阀的正确调节直接影响着启动过程的成败；引入对轴封系统控制逻辑要点的讨论，确保轴封系统安全稳定工作。此方案可为同类型二次再热机组的启动过程提供参考。

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