PV/PTST-CCHP系统的运行策略分析和优化配置

OPERATION STRATEGY ANALYSIS AND CONFIGURATION OPTIMIZATION OF PV/PTST-CCHP SYSTEM

建立一种新型的太阳能冷热电联供(PV/PTST-CCHP)系统,研究以热定电和以电定热2种运行策略下的最优容量配置。研究对象是以槽式太阳能热发电为主以光伏和燃气轮机发电为辅的冷热电联供系统。以北京某宾馆作为算例,基于全寿命周期法,以经济、能源和环境为目标建立数学模型,通过对比各指标选出优势运行策略。应用爬山算法(HCA)对系统的配置进行优化,将最优配置下的指标与分供系统指标对比。结果表明联供系统比分供系统更具有优势。

A new parabolic trough solar thermal and photovoltaic combined cooling heating and power(PV/PTST-CCHP) system is established in this paper. Ordering power by heat(OPH)strategy and ordering heat by power(OHP)strategy are studied and the capacity configuration of the system is optimized. The research object is a cogeneration system of cold,heat and electricity,which is dominated by trough solar thermal power and supplemented by photovoltaic and gas turbine power generation. Taking a hotel in Beijing as an example,mathematical models are established for the purpose of economic, energy and environment based on whole life-cycle. The operation strategy with advantages is selected through the comparison of various indicators. The hill climbing algorithm(HCA)is used to optimize the configuration of the system under the optimal operation strategy and indexes under the optimal configuration are compared with those of the sub-supply system. The results show that the PV/PTST-CCHP system has more advantages than the sub-supply system.