化工进展 ›› 2019, Vol. 38 ›› Issue (07): 3046-3055.DOI: 10.16085/j.issn.1000-6613.2018-1927

• 化工过程与装备 • 上一篇    下一篇

基于复杂网络控制理论的换热网络旁路位置确定

董云青1(),王政1(),徐一凡1,杨燕霞1,贾小平2,王芳2   

  1. 1. 青岛科技大学化工学院,山东 青岛 266042
    2. 青岛科技大学环境与安全工程学院,山东 青岛 266042
  • 收稿日期:2018-09-26 出版日期:2019-07-05 发布日期:2019-07-05
  • 通讯作者: 王政
  • 作者简介:董云青(1993—),男,硕士研究生,研究方向为过程系统工程。E-mail:<email>1730564189@qq.com</email>。
  • 基金资助:
    国家自然科学基金(41771575)

Heat exchanger network bypass position determination based on complex network control theory

Yunqing DONG1(),Zheng WANG1(),Yifan XU1,Yanxia YANG1,Xiaoping JIA2,Fang WANG2   

  1. 1. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China
    2. College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China
  • Received:2018-09-26 Online:2019-07-05 Published:2019-07-05
  • Contact: Zheng WANG

摘要:

换热网络的旁路控制是增加自由度和提升系统控制性能的有效手段。为了保证控制的有效性和经济性,本文基于复杂网络理论,结合“下游路径”理论中换热网络的干扰传递规律,构建出换热网络的有向加权的复杂网络模型,然后把换热网络旁路抽象为复杂网络驱动节点集,权衡可控性与经济性两方面因素,给出两种旁路位置确定方法。在可控性要求较高时,基于复杂网络结构可控性理论,提出了换热网络全局可控的旁路位置确定法,该算法不仅通过设置最少的旁路实现了换热网络的全局可控,还实现了对换热网络控制性能的优化;当旁路数目受限时,基于复杂网络目标控制理论,提出了重要节点可控的旁路位置确定法,在保证其重要节点可控的同时,减少旁路数量从而节省投资费用。最后,以大型原油换热网络为例分别求解全局可控和重要节点可控的换热网络旁路位置,验证了该方法的可行性。

关键词: 换热网络, 旁路控制, 复杂网络, 结构可控性, 目标控制, 驱动节点集

Abstract:

The bypass control of the heat exchanger network is an effective mean to increase degree of freedom and improve system control performance. In order to ensure the effectiveness and economy of the control, based on the complex network theory, combined with the disturbance transmission law of the heat exchanger network in the "downstream path" theory, a directional weighted complex network model of the heat exchanger network was constructed. Then, the heat exchanger network bypass was abstracted into a complex network drive node set, and the controllability and economy were weighed. Two methods for determining the bypass position were given: when the controllability requirement is high, based on the complex network structure controllability theory, a globally controllable bypass position determination method for the heat exchanger network was proposed. The algorithm realized the global controllability of the heat exchanger network by setting a minimum of bypass, and optimized the control performance of the heat exchanger network. When the number of bypasses is limited, based on the complex network target control theory, a method for determining the bypass position of important nodes was proposed to ensure that the important nodes are controllable while reducing the number of bypasses and saving investment costs. Finally, the large crude oil heat exchange network was taken as an example to solve the heat exchanger network bypass position by the global controllable and important node controllable methods.

Key words: heat exchanger network, bypass control, complex network, structure controllability, target control, drive node set

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