首页|夏热冬冷地区办公建筑空调系统需求响应潜力的影响因素量化分析

夏热冬冷地区办公建筑空调系统需求响应潜力的影响因素量化分析

Quantitative Analysis of Influencing Factors on Demand Response Potential of HVAC System in Office Buildings in hot Summer and Cold Winter Zone

扫码查看
近年来建筑空调系统的用电负荷在电网总负荷中的占比不断增大,如何高效推动建筑空调系统积极参与电力需求响应,对实现"削峰填谷"、提高电力系统灵活性、保障电网安全稳定运行具有重要意义.建筑空调系统需求响应潜力的科学评估是实现空调负荷柔性调控的基础,难点在于多因素耦合影响,量化评估难.以夏热冬冷地区某办公建筑为例,基于EnergyPlus软件模拟,通过控制变量法对影响建筑空调系统需求响应潜力的4 种因素(室外天气、建筑围护结构性能、空调系统性能、需求响应策略)进行敏感性分析.结果表明,建筑围护结构性能变化对空调系统需求响应潜力影响较小,而其他 3 种因素影响较大.其中,当夏季室外空气焓值由70~75 kJ/kg上升至85~90 kJ/kg时,空调系统参与需求响应的峰值负荷削减量(即需求响应潜力)由13.01 W/m2 提升至17.54 W/m2(增大35%);当多联机系统COP由 4.0 降低至2.5 时,需求响应潜力由19.51 W/m2 提升至31.21 W/m2(增大60%);当水冷式空调系统COP由6.0 降低至3.0 时,需求响应潜力由 11.60 W/m2 提升至 23.20 W/m2(增大 100%);当需求响应策略由室温设定值上升2℃变为上升4℃时,需求响应潜力由10.74 W/m2 提升至17.28 W/m2(增大61%).
In recent years,the proportion of electricity consumption from air conditioning systems in the total grid load has been increasing continuously.Therefore,active participation of air conditioning systems in electrical power demand response is crucial for achieving peak-load shifting and valley-load filling,enhancing the flexibility of the power system,and ensuring the safe and stable operation of the grid.The scientific assessment of the demand response potential of air conditioning systems is the basis for achieving flexible control of air conditioning loads.The challenge lies in being susceptible to the coupling effects of multiple factors,making quantitative assessment difficult.Taking an office building in a hot summer and cold winter zone as an example,this study conducts sensitivity analysis of four factors(weather,building envelope performance,air conditioning system performance,and demand response strategies)that influence the demand response potential of air conditioning systems using control variable method based on the simulation in EnergyPlus software.The results indicate that the impact of building envelope performance on the demand response potential of air conditioning system is relatively small,while the other three factors have greater influences.Specifically,when the enthalpy of outdoor air increases from 70~75 kJ/kg to 85~90 kJ/kg in summer,the peak load reduction of air conditioning system when participating in demand response events(i.e.demand response potential)rises from 13.01 W/m2to 17.54 W/m2(a 35%increase).When the COP of VRF air conditioning system decreases from 4.0 to 2.5,the demand response potential increases from 19.51 W/m2to 31.21 W/m2(a 60%increase).When the COP of water-cooled air conditioning system decreases from 6.0 to 3.0,the demand response potential increases from 11.60 W/m2to 23.20 W/m2(a 100%increase).Furthermore,changing the demand response strategy from a 2℃increase in room temperature setpoint to a 4℃increase results in the demand response potential increasing from 10.74 W/m2to 17.28 W/m2(a 61%increase).

demand responseair conditioning systeminfluencing factors analysisoffice buildinghot summer and cold winter zone

汤卓凡、张燚虎、魏子梁、耿阳、赵建立、林波荣

展开 >

国网上海市电力公司,上海 200030

上海市智能电网需求响应重点实验室,上海 200030

清华大学 建筑学院,北京 100084

清华大学 生态规划与绿色建筑教育部重点实验室,北京 100084

展开 >

需求响应 空调系统 影响因素分析 办公建筑 夏热冬冷地区

国家电网总部科技项目

5400-202340383A-2-3-XG

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(3)
  • 22