华南理工大学学报(自然科学版) ›› 2017, Vol. 45 ›› Issue (10): 26-33.doi: 10.3969/j.issn.1000-565X.2017.10.004

• 化学化工、能源 • 上一篇    下一篇

区域供冷系统的冷量传递控制与末端冷量调节

张严1,2 楚晓丽3 刘永强1†   

  1. 1. 华南理工大学电力学院,广东广州510640; 2. 广东财经大学教师发展与教育技术中心,广东广州510320; 3. 广东农工商职业技术学院网络中心,广东广州510507
  • 收稿日期:2016-08-19 修回日期:2016-12-26 出版日期:2017-10-25 发布日期:2017-09-01
  • 通信作者: 刘永强(1961-),男,教授,博士生导师,主要从事电能质量监测与控制、电力电子等研究. E-mail:yongqliu@163.com
  • 作者简介:张严(1983-),男,博士,主要从事混杂系统、空调节能控制研究. E-mail:yanralfzhang@163.com
  • 基金资助:
    国家自然科学基金资助项目(61104181)

Cold Transmitting Control and Terminal Cold Adjusting of District Cooling System

ZHANG Yan1,2 CHU Xiao-li3 LIU Yong-qiang1   

  1. 1.School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China; 2.Educational Technology Center,Guangdong University of Finance and Economics,Guangzhou 510320,Guangdong,China; 3.Network Center,Guangdong AIB Polytechnic,Guangzhou 510507,Guangdong,China
  • Received:2016-08-19 Revised:2016-12-26 Online:2017-10-25 Published:2017-09-01
  • Contact: 刘永强(1961-),男,教授,博士生导师,主要从事电能质量监测与控制、电力电子等研究. E-mail:yongqliu@163.com
  • About author:张严(1983-),男,博士,主要从事混杂系统、空调节能控制研究. E-mail:yanralfzhang@163.com
  • Supported by:
    Supported by the National Natural Science Foundation of China(61104181)

摘要: 为了实现区域供冷系统的冷量传递与末端温度调节,建立了冷量经一个二级冷 量交换站由水系统向风系统传递的理论模型,并结合房间内的温度动态变化模型,推导出 了水系统一次侧流量与空调末端房间温度的传递函数. 采用水系统一次侧变水量与空调 末端变风量结合的技术,根据冷负荷变化,分别采用PI 控制器和PID 控制器实时调整水 泵与风机的转速,并对风机与水泵进行能耗建模与节能分析,以实现空调房内温度的控制 与电量的节约目的. 最后通过Simulink 软件仿真,给出了空调房内温度、水泵转速、水流 量、节能量等参数变化的示意图,展示了文中节能控制方法的有效性.

关键词: 区域供冷, 冷量, 节能控制, 变水量, 变风量

Abstract: In order to realize the cold transmitting and terminal temperature adjusting of district cooling systems,a transitive theoretical model of the cold from a water system to an air system by a two-stage cooling exchange station is constructed,and by combining a dynamic change model of indoor temperature,a transfer function from the volume of the water-system primary side to the indoor temperature of the air conditioning terminal is derived.Then,the technology integrating the variable water volume (VWV) of the water-system primary side with the variable air volume (VAV) of the air conditioning terminal is applied,and according to the change of cold load,the PI and PID controllers are respectively employed to adjust the speed of pumps and fans in real-time.Moreover,the energyconsumption modeling and energy-saving analysis of the fans and the pumps are performed,so as to control the indoor temperature and save the electric quantity.Finally,by using the Simulink software,the schematic diagrams of the variation of such parameters as the indoor temperature,the pump speed,the water volume,and the energy-saving quantity are put forward,and the effectiveness of the above energy-saving control method is exhibited.

Key words: district cooling, cold, energy-saving control, variable water volume, variable air volume

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