Acta Agriculturae Zhejiangensis ›› 2026, Vol. 38 ›› Issue (5): 1008-1023.DOI: 10.3969/j.issn.1004-1524.20250562

• Biosystems Engineering • Previous Articles     Next Articles

Construction of a multi-energy complementary energy-saving system for multi-span greenhouses based on distributed control

LUO Dong1(), SONG Daping1, KANG Dalei2, LIU Jikai2, WANG Bingxue3, ZUO Qiang1,*()   

  1. 1 Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
    2 Beijing Zhongboxitai Agricultural Technology Co., Ltd., Beijing 102200, China
    3 Beijing Nanjiao Agricultural Production and Management Co., Ltd., Beijing 100163, China
  • Received:2025-09-03 Online:2026-05-25 Published:2026-06-02

Abstract:

To address the challenges of high energy consumption, delayed response in multi-energy coordinated control, and poor alignment between energy supply and crop growth demand in multi-span greenhouses in northern China, this study takes an 11 000 m2 Venlo-type multi-span greenhouse in Beijing as the research object. An integrated multi-energy complementary energy-saving system (IMCES) based on a photovoltaic-water source heat pump-phase change energy storage wall configuration and a “cloud-edge-device” distributed architecture are constructed. Through customized control algorithms for agricultural scenarios, an energy-environment-crop coupling model, and dynamic coordinated scheduling strategies, precise matching among energy production, storage, consumption, and crop growth demand is achieved. Full-year measurement results in 2024 show that the multi-energy coordinated response time of the system does not exceed 15 s, which is 87.5% shorter than that of traditional centralized control. Annual electricity savings amount to 32.45×104 kW·h, with a comprehensive energy saving rate of 31.9%. The photovoltaic subsystem generates 147.84×104 kW·h annually, meeting 97.3% of the greenhouse’s electricity demand, and the photosynthetically active radiation (PAR) transmittance exceeds 85%. The single-season yields of tomato and lettuce were 78.5 t·hm-2 and 32.8 t·hm-2, respectively, showing no significant difference from those under traditional planting modes. The average coefficient of performance (COP) for heating and energy efficiency ratio (EER) for cooling of the water source heat pump were 4.2 and 5.0, respectively. The phase change energy storage wall reduces air conditioning load by 10.2%. The system reduces carbon emissions by approximately 1 415 t CO2 annually. This study provides a replicable and scalable low-carbon and energy-saving technical solution for multi-span greenhouses. The core innovations include the customized distributed control optimization for agricultural scenarios and the coupling mechanism between the multi-energy system and crop growth demand, offering theoretical support and a technical paradigm for the green and low-carbon transformation of facility agriculture.

Key words: distributed control, multi-span greenhouse, multi-energy complementarity, photovoltaic power generation, water source heat pump, phase change energy storage, energy saving and carbon reduction

CLC Number: