Combined Cooling Heating and Power System Design and Capacity Configuration taking into account Solar Photovoltaic

摘要

In this paper, a structure with energy storage of multi-complementary Combined Cooling Heating and Power (CCHP) systems was presented, including photovoltaic panels (PV) generation, power generation unit (PGU), boiler, energy storage device, electric chiller, absorption chiller. Combined with the full working condition model of PGU and other equipment models, the capacity optimization configuration model of the system was established, and the operation mode of Following Electrical Load (FEL) with energy storage was designed. The economic, energy and environmental properties are the comprehensive objectives of the system. The Genetic algorithm (GA) is used to solve the problem and the capacity of different equipment is obtained. Taking a commercial office building in Jinan as an example, compared with the goals obtained by the traditional non-energy storage CCHP system under FEL and Following Thermal Load (FTL) operation modes. The results show that non-energy storage CCHP system in the FEL operation mode Primary Energy Saving Rate (PESR) and Annual Cost Savings Rate (ACSR) is increased by 15.53% and 28.65% respectively, compared with the FTL operation mode. After the energy storage is increased, compared with the FEL non-energy storage system, PESR, ACSR and CO₂Emission Reduction Ratio (ERR) increased by 4.61%, 1.97%, and 3.18%, respectively, and the economics was the best under FTL operation mode.