Abstract
Natural gas distributed energy supply system (DES) can realize the cascade and efficient use of energy, which is an important way to solve the current global energy crisis. Different operating strategies will affect the operation of the device, which in turn affects the overall performance of the system. The DES model was constructed by Modelica taking the distributed energy station of a factory in Shanghai as an example. The annual dynamic simulation of DES under three operation strategies - follow electricity load (FEL) 、 follow thermal load (FTL) and follow hybrid load (FHL) was carried out. The results showed that the annual operating costs of the three strategies could be saved by 7.4%, 7.8% and 6.9% respectively, and the comprehensive utilization rates of energy were 76%, 74% and 72% respectively.
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