系统仿真学报 ›› 2017, Vol. 29 ›› Issue (11): 2811-2819.doi: 10.16182/j.issn1004731x.joss.201711030

• 仿真应用工程 • 上一篇    下一篇

有机朗肯循环余热利用系统的多模型预测控制

韩璞, 张婷   

  1. 华北电力大学 河北省发电过程仿真与优化控制工程技术研究中心,保定 071003
  • 收稿日期:2017-01-06 发布日期:2020-06-05
  • 作者简介:韩璞 (1959-2017), 男, 河北, 本科, 教授,博导, 研究方向为智能控制理论及应用, 网络化控制技术与系统, 火电站节能减排优化运行技术等。
  • 基金资助:
    国家自然科学基金(61773160),中央高校基本科研业务费专项资金(2014XS45)

Multiple Model Predictive Control of Waste Heat Recovery Systems based on Organic Rankine Cycle

Han Pu, Zhang Ting   

  1. Hebei Engineering Research Center of Simulation & Optimized Control for Power Generation (North China Electric Power University), Baoding 071003, China
  • Received:2017-01-06 Published:2020-06-05

摘要: 针对有机朗肯循环(Organic Rankine Cycle,ORC)余热利用系统大范围运行工况(膨胀机转矩${{F}_{exp}}\in [20,35]$ N·m,工质泵转速${{R}_{pp}}\in [300,550]$ r/min)的控制问题,提出基于线性离线多模型的多模型预测控制策略。对ORC实际运行过程中的不同工况进行基于离线线性模型的预测控制器设计。综合考虑当前时刻系统输出残差与输出残差累积值,设计切换策略,对不同运行工况下的子控制器进行切换。设计仿真实验对该算法在大范围运行工况的ORC系统上的控制效果进行验证。结果表明,多模型预测控制能够适用于大范围运行工况的ORC系统,并取得良好的控制效果

关键词: 有机朗肯循环, 余热利用系统, 大范围工况, 多模型预测控制

Abstract: A multiple model predictive control strategy based on offline linear model is proposed for controlling the ORC-based WHRSs (waste heat recovery systems). The proposed control strategy is described for a wide operation region of the ORC system. A switching mechanism considering both instant output errors of each model and error accumulation is applied for the switch of local controllers in different operation regimes. Simulation results demonstrate that the proposed method can effectively regulate the evaporating pressure and the superheating temperature for the ORC-based WHRS throughout a wide operation region.

Key words: ORC, waste heat recovery system, wide operation region, multiple model predictive control

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