系统仿真学报 ›› 2019, Vol. 31 ›› Issue (4): 710-719.doi: 10.16182/j.issn1004731x.joss.17-9150

• 仿真应用工程 • 上一篇    下一篇

基于粒子群算法的二次再热机组参数优化分析

付文锋1, 陈海文1, 王蓝婧2,*   

  1. 1.华北电力大学 电站设备状态监测与控制教育部重点实验室,河北 保定 071003;
    2.华北电力大学 控制与计算机工程学院,河北 保定 071003
  • 收稿日期:2017-12-05 修回日期:2018-04-08 出版日期:2019-04-08 发布日期:2019-11-20
  • 作者简介:付文锋(1982-),男,河北,博士,讲师,研究方向为电站热力系统优化; 陈海文(1994-),男,宁夏,硕士生,研究方向为电站热力系统优化;王蓝婧(通讯作者1982-),女,河北,硕士,讲师,研究方向为电站设备仿真与节能优化。
  • 基金资助:
    国家自然科学基金(51606066), 中央高校基本科研业务费专项资金(2017MS117, 2018MS077)

Parameter Optimization Analysis for Double Reheat Units Based on Particle Swarm Optimization

Fu Wenfeng1, Chen Haiwen1, Wang Lanjing2,*   

  1. 1.North China Electric Power University, Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Baoding 071003, China;
    2.School of Control and Computer Engineering, North China Electric Power University, Baoding 071003, China
  • Received:2017-12-05 Revised:2018-04-08 Online:2019-04-08 Published:2019-11-20

摘要: 针对二次再热超超临界机组,建立了热力系统参数优化模型。以某660 MW机组为例,应用粒子群算法,计算分析了给水焓升分配、给水温度、再热压力、回热级数和主蒸汽参数对提高机组热经济性的贡献。结果表明:通过热力系统接口参数优化,机组热效率仍有较大的提升潜力;二次再热压力比一次再热压力对机组热效率的影响更大;选择增加低压加热器对机组热效率的提升效果更显著;最佳给水温度主要随初压的升高而升高,主蒸汽温度和再热蒸汽温度对最佳给水温度的作用趋势相反。

关键词: 二次再热, 超超临界, 热力系统, 参数优化

Abstract: The thermodynamic system parameter optimization was established for double reheat ultra-supercritical units. Taking a 660MW unit as an example, some vital parameters including feedwater enthalpy rise distribution, feedwater temperature, reheat steam pressure, number of feedwater heaters and main steam parameter were analyzed based on particle swarm optimization. The result shows the unit thermal efficiency can be further improved by optimizing apparatus interface parameters. The second reheat pressure has more influence on the unit thermal efficiency than the first reheat pressure. When adding the number of feedwater heaters, low pressure heater is a better choice for improving unit thermal efficiency. Optimum feedwater temperature increases with the increase of main steam pressure. The changes of main steam temperature and reheat steam temperature have opposite effects on optimum feedwater temperature.

Key words: double reheat, ultra-supercritical, thermodynamic system, parameter optimization

中图分类号: