首页|基于物联网技术与变分模态分解的大型制冷设备节能控制方法

基于物联网技术与变分模态分解的大型制冷设备节能控制方法

Energy Saving Control Method for Large Refrigeration Equipment Based on IoT Technology and Variational Mode Decomposition

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当前大型制冷设备节能控制多采用网格化算法,此方法难以彻底消除节能控制过程中的时滞性,使得设备节能率较低.因此,提出基于物联网技术与变分模态分解的大型制冷设备节能控制方法.采用物联网技术对设备的运行与控制参数进行采集,通过边缘处理与分析,输入到低负荷下设备运行模型中.根据设备的监测保护机制,对设备的能量耗散机理进行分析,获取设备能耗特征的参数.结合变分模态算法对设备的实际出力进行信号分解,得到多个频域特征值,求取负载功率的临界值和平滑衰落系数,以消除时滞性的影响,进而设定设备节能运行工况区间.以此为依据,建立节能控制模型,通过调节模型的衰减调制系数,实现对设备的节能控制.以某大型制冷系统为实验对象,采用所提方法对其进行节能控制,结果表明:应用所提方法后设备的能耗量显著降低,节能率较高.
Currently,grid based algorithms are commonly used for energy-saving control of large refrigeration equipment,which makes it difficult to completely eliminate the time delay in the energy-saving control process,resulting in a low energy-saving rate of the equipment.Therefore,an energy-saving control method for large refrigeration equipment based on IoT technology and variational mode decomposition is proposed.The operation and control parameters of devices are collected using IoT technology,and input into the device operation model under low load through edge processing and analysis.The energy dissipation mechanism of the equipment is analyzed based on its monitoring and protection mechanism,then parameters of the equipment's energy consumption characteristics are obtained.By combining the variational modal algorithm to decompose the actual output signal of the equipment,multiple frequency domain eigenvalues are obtained,and the critical value of load power and smooth fading coefficient are calculated to eliminate the influence of time delay,and then the energy-saving operating condition range of the equipment is set.Based on this,an energy-saving control model is established,achieving energy-saving control of the equipment by adjusting the attenuation modulation coefficient of the model.Taking a large refrigeration system as the experimental object,the proposed method is used for energy-saving control.The results show that the energy consumption of the equipment is significantly reduced and the energy-saving rate is high after applying the proposed method.

Internet of Things(IoT)variational mode decompositionrefrigeration equipmentenergy saving control

李扬、乔武、李翔、张旭

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北京欣阳通力商业设备有限公司,北京 100028

北京一商集团有限责任公司,北京 100010

物联网技术 变分模态分解 制冷设备 节能控制

2024

建筑节能(中英文)
中国建筑东北设计研究院有限公司

建筑节能(中英文)

CSTPCD
影响因子:0.695
ISSN:2096-9422
年,卷(期):2024.52(2)
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