A Multi-Step Modeling and Optimal Operation Calculation Method for Large-Scale Energy Hub Model Considering Two Types Demand Responses

Abstract

Energy hub (EH) model, which connects the input and output energy by using the coupling matrix, is an important model for multiple energy system (MES) study. In a complex MES, it is very difficult to formulate the coupling matrix directly. This paper proposes a multi-step modeling method that separates the conversion process of the EH model into several steps and set up the EH model by multiplying the coupling matrix in each step. Then, the storage location and the concept of demand response are extended and integrated in the EH model. The EH model is difficult for the optimal operation calculation due to the nonlinearity caused by dispatch factors. This paper adds variable substitution in each step to reduce the EH model’s nonlinearity. A real residential district in Guangzhou, China, and a large-scale MES are conducted to validate the efficiency of proposed modeling and calculation method. The results show that the calculation method can reduce the computational burden significantly with global optimum obtained.