基于运行数据包络线的冷水机组运行优化策略研究

Optimal Operation Strategy of Multiple Chiller System Based on the Best-Performance Line of History Data

为提高冷水机组能效,本文提出一种基于冷水机组运行数据性能包络线的负荷分配优化控制策略。基于历史运行数据,采用数据衍生与移动窗口方法,获取了冷水机组的性能包络线,并基于性能包络线对负荷分配进行优化。通过在我国南方某机场空调系统运行测试,对本策略进行了验证并与顺序启停控制策略进行了对比,结果表明:该控制策略具有较好的节能效果。在典型日,该控制策略相比顺序启停控制策略的节能效果提升8.2%。

Chillers usually account for a major part of the overall energy consumption in commercial buildings.To improve the energy efficiency of chillers,we present an optimal chiller loading control strategy based on the best-performance line of the chiller.The best-performance line is created from historic operation data by using the moving window and data proliferation methods.The strategy is validated using an airport air-conditioning system in south China.The strategy is compared with sequencing control strategy.The results show that the proposed strategy shows a better performance with respect to energy saving.On typical days,the operating condition of the chillers can be optimized to save energy up to 8.2%.