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中南大学学报(自然科学版)

Journal of Central South University

第50卷    第1期    总第293期    2019年1月

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文章编号:1672-7207(2019)01-0220-14
基于动态水力平衡的集中供热系统二次管网节能优化调节方法研究
周璇1,刘国强2,王晓佩1,闫军威1

(1. 华南理工大学 机械与汽车工程学院,广东 广州,510640;
2. 广州远正智能科技股份有限公司,广东 广州,510000
)

摘 要: 针对二次管网各支路之间相互耦合、流量难以精确控制、输配系统各设备的动态调节容易造成水力失衡的情况,利用电网图论原理建立二次管网多元非线性水力工况模型,并利用实测数据建立二次管网输配系统能耗模型,以输配系统能耗最小为目标,以各支路动态水力平衡为主要约束条件,建立基于遗传算法的二次管网输配系统节能优化调节模型,用于在线优化二次管网输配系统各设备的运行参数。利用某高校集中供热系统二次管网进行建模和仿真。研究结果表明:动态调节方法相对变压差变流量调节方式可使输配系统运行能耗进一步降低约12.27%,为多执行机构二次管网水力平衡的动态优化调节提供参考。

 

关键字: 集中供热系统;二次管网;动态水力平衡;图论;遗传算法

Study on optimal adjustment method of second pipe network in central heating system based on dynamic hydraulic balance
ZHOU Xuan1, LIU Guoqiang2, WANG Xiaopei1, YAN Junwei1

1. School of Mechanical and Automotive Engineering, South China University of Technology,
Guangzhou 510640, China;
2. Guang Zhou Yuan Zheng Intelligent Technology Co. Ltd, Guangzhou 510000, China

Abstract:In view of the problems involved in controlling the branch pipe flow accurately due to hydraulic imbalance during the dynamic adjustment process of coupled branches for water secondary distribution system, a multivariate nonlinear hydraulic model of the secondary pipeline network was established according to the principle of power network graph theory. And the energy consumption model of the equipment for water distribution system was also established by using the actual measured data. Then with the constraints of dynamic hydraulic balance of each branch, these two models were combined to be solved to optimize the operational parameters of the distribution system based on genetic algorithm for minimum energy consumption. Effectiveness of the proposed method was verified by simulation in the case of the secondary pipeline network of central heating system in a university. The results show that the dynamic regulation method can further reduce the energy consumption of the distribution system by 12.27% compared with the variable pressure and flow regulation method, which can also provide a new idea for the dynamic optimal regulation of the hydraulic balance of the secondary pipeline network with multiple actuators.

 

Key words: central heating system; second network; dynamic hydraulic balance; graph theory; genetic algorithm

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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