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Efficiency improvement of cogeneration system using statistical model

机译:利用统计模型提高热电联产系统的效率

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摘要

In order to improve the efficiency of the cogeneration system which integrates turbine generator (TG) and cooling tower (CT), a real-time optimum operation strategy of fans is proposed. First the statistical models of TG and CT are developed off-line by using the local model network (LMN) algorithm. Then the optimal outlet temperature of cooling water (T_(cw.our)) is calculated by solving the optimization problem which maximizes the net power output of cogeneration system. Based on the calculated (T_(cw.our)), a statistical linear model is employed, which characterizes Approach of CT. Finally, based on the proposed Approach model, an optimum operation mode table for the six fans is established. In order to decide optimum mode for fans, the factors such as different climatic conditions are also incorporated. Using the optimum operation table, a real-time operation mode of fans can be achieved. The performance of the proposed method is similar to the previously developed LMN method (about 85-95% as demonstrated in Table 3) while requiring a very low computational cost. The proposed method is also advantageous because the field operators can understand the physical meaning of operation. This algorithm can be easily implemented into the existing distributed control system making it a very good option for on-line implementation.
机译:为了提高将涡轮发电机(TG)和冷却塔(CT)集成在一起的热电联产系统的效率,提出了一种风机的实时最优运行策略。首先,通过使用局部模型网络(LMN)算法离线开发TG和CT的统计模型。然后,通过解决使热电联产系统的净功率输出最大化的优化问题,计算出冷却水的最佳出口温度(T_(cw.our))。基于计算的(T_(cw.our)),采用统计线性模型,该模型表征了CT的方法。最后,基于所提出的进近模型,建立了六个风扇的最佳运行模式表。为了确定风扇的最佳模式,还考虑了诸如不同气候条件等因素。使用最佳运行表,可以实现风扇的实时运行模式。拟议方法的性能类似于先前开发的LMN方法(如表3所示,约为85-95%),同时需要非常低的计算成本。所提出的方法也是有利的,因为现场操作人员可以理解操作的物理含义。该算法可以很容易地实现到现有的分布式控制系统中,使其成为在线实现的很好选择。

著录项

  • 来源
    《Energy Conversion & Management》 |2013年第4期|169-176|共8页
  • 作者单位

    School of Electrical and Information Engineering, fiangsu University, Zhenjiang, Jiangsu 212013, China,Key Laboratory of Facility Agriculture Measurement and Control Technology and Equipment of Machinery Industry, fiangsu University, Zhenjiang 212013, China;

    School of Electrical and Information Engineering, fiangsu University, Zhenjiang, Jiangsu 212013, China;

    School of Electrical and Information Engineering, fiangsu University, Zhenjiang, Jiangsu 212013, China;

    Department of Occupational Safety and Health, Chang Jung Christian University, Tainan 71101, Taiwan;

    'Department of Chemical Engineering, National Tsing-Hua University, Hsin-Chu 30047, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cooling tower (CT); turbine generator (TC); approach; statistical model; local model network (LMN);

    机译:冷却塔(CT);涡轮发电机(TC);方法;统计模型;局部模型网络(LMN);

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