储能电站集中式液冷换热方案设计及控制策略

Design and Control Strategy of Centralized Liquid-cooling Heat Exchange Scheme for Energy Storage Power Stations

在电池储能集装箱系统中,由于液冷方式相比空冷方式具有更好的换热效果,电池液冷方式逐渐得到应用。以液冷储能集装箱系统为对象,从工程应用角度对电站集中式液冷换热系统方案进行开发设计,提出了换热系统总体布置工艺方案及压缩冷水机组设计方案;在此基础上,提出了以调节进入集装箱的闭式水的温度和流量来进行电池温度控制的调控策略,实现了储能电站的集中温度调控。该方案可大幅降低储能电站的厂用电率,提高换热效率,并降低储能电站换热系统的投资费用及运维成本,适用于无人值守的大型电池储能电站。

In the battery energy storage container system,because the liquid-cooling mode has better heat exchange effect than air-cooling mode,the battery liquid-cooling mode is gradually being used.Taking the liquidcooling energy storage container system as the object,from the perspective of engineering application,the centralized heat exchange system scheme of power station is developed and designed,and the overall layout technology scheme of heat exchange system and the design scheme of compression chiller are proposed.Thereupon,the control strategy of battery temperature control by adjusting the temperature and flow of the water entering the container is proposed,which realizes the centralized temperature control of the energy storage power station,and reduce the cost of investment,operation and maintenance of the heat exchange system of the energy storage power station.The proposed scheme can greatly reduce the plant power consumption rate,improve the heat exchange efficiency.It is suitable for unattended large battery energy storage power stations.