适用于主动配电网的高效冷热电联产系统及其运行研究
Research on operation of CCHP system applied to active distribution network
摘要：
为了适应主动配电网的主动控制和主动管理，提出了新型热泵型冷热电联产系统。利用吸收式热泵、电热泵以及蓄能罐深度回收发动机烟气余热，使排烟温度降至10 ℃左右，同时利用电热泵消耗机组发电为可再生能源上网调峰，从而使冷热电联产系统在热电协同的情况下高效运行，设计工况下总能源利用率达到91%。研究了系统的流程和运行模式。通过对具体案例的计算和分析，得出系统的逐时运行特性，从而给出电热泵和蓄能罐的设计容量和系统配置。研究结果表明，该系统既可以满足电网调度，又可以满足用户的冷热需求，还可以实现烟气热量的全热回收，为冷热电联产系统在未来智能电网中的应用提供技术支持。
Abstract：
In order to adapt to the active control and management of active distribution network (ADN), proposes a new heat pump type of CCHP system. Uses the absorption heat pump, electric heat pump and storage tank to deeply recover the waste heat of the flue gas, which causes the temperature of the exhausted gas is decreased to about 10℃. Meanwhile, the electric heat pump is consuming the power generated by the generator to adjust the peak of the network and feed the electricity from renewable energy into the grid. Thus, the CCHP system can be highly effective in the case of thermal and electrical coordination. The total energy efficiency under design condition can reach 91%. Studies the flow and the operation mode of the system. Through calculation and analysis of actual case, obtains the hourly operation characteristics of the system. According to the hourly analysis of the operation, gives the capacity of the electric heat pump and the storage tank as well as the configurations of the system. The results show that the system can meet not only the management requirements of the ADN, but also the heating and cooling requirements of the users. Meanwhile, the total heat of the flue gas can be recovered. Provides technical support for the application of the system in the future smart grid.
Keywords:active distribution network, CCHP, heat pump, storage tank, total heat recovery of flue gas