苏州地铁1号线车站通风空调系统节能控制方案与应用研究

以苏州地铁1号线滨河路站和东方之门站的通风空调系统为研究案例,其中滨河路站同时采用变风量和变水量控制,而东方之门站仅进行变水量控制,建立并验证水系统与风系统进行变频控制时的控制模型,并结合单变风量和风水同变两种控制模式对比分析了不同控制模式下通风空调系统的节能效果。提出了水变频与风变频的协调控制方案,实现对整个通风空调系统节能潜力的深入挖掘,为地铁通风空调系统的节能设计提供参考。

An optimal strategy for coordinating and dispatching “source-load” in power system based on multiple time scales

Due to the phenomenon of abandoning wind power and photo voltage(PV)power in the“Three Northern Areas”in China,this paper presents an optimal strategy for coordinating and dispatching“source-load”in power system based on multiple time scales.On the basis of the analysis of the uncertainty of wind power and PV power as well as the characteristics of load side resource dispatching,the optimal model of coordinating and dispatching“source-load”in power system based on multiple time scales is established.It can simultaneously and effectively dispatch conventional generators,wind plant,PV power station,pumped-storage power station and load side resources by optimally using three time scales:day-ahead,intra-day and real-time.According to the latest predicted information of wind power,PV power and load,the original generation schedule can be rolled and amended by using the corresponding time scale.The effectiveness of the model can be verified by a real system.The simulation results show that the proposed model can make full use of“source-load”resources to improve the ability to consume wind power and PV power of the grid-connected system.

Coordinated control strategy for wind power accommodation based on electric heat storage and pumped storage

To solve the severe problem of wind power curtailment in the winter heating period caused by ＂power determined by heat＂ operation constraint of cogeneration units, this paper analyzes thermoelectric load, wind power output distribution and fluctuation characteristics at different time scales, and finally proposes a two level coordinated control strategy based on electric heat storage and pumped storage. The optimization target of the first level coordinated control is the lowest operation cost and the largest wind power utilization rate. Based on prediction of thermoelectric load and wind power, the operation economy of the system and wind power accommodation level are improved with the cooperation of electric heat storage and pumped storage in regulation capacity. The second level coordinated control stabilizes wind power real time fluctuations by cooperating electric heat storage and pumped storage in control speed. The example results of actual wind farms in Jiuquan, Gansu verifies the feasibility and effectiveness of the proposed coordinated control strategy.

轨道交通空调中风系统与水系统协调控制研究

针对目前中央空调节能控制中对风系统与水系统协调控制研究的空白,本文以轨道交通环境控制系统为研究对象,通过分析空气处理机组的送风风量与流过表冷器的冷冻水流量对空气处理机组输出冷量的影响规律,提出了基于最优工作点的送风风量与冷冻水流量的协调控制方法,为地铁空调系统在部分负荷下风系统与水系统的控制策略提供参考。