Optimization of Off-grid Industrial Park Integrated Energy System Considering Production Process

Industrial park integrated energy system (IES) includes the complex production constraints which determine the energy demand. However, the production process is conventionally considered as a fixed load. In fact, the production process can be dispatched flexibly to optimize the operation of IES, especially in off-grid situation whose objective is to improve production under insufficient energy supply. In this paper, considering the coupling between production process and energy demand, a model of industrial process is proposed by dividing the process into different adjustable steps including continuous and discrete subtasks and storage stage. Then, integrating the production constraints and multiple energy supplies, an optimal dispatching approach for off-grid industrial parks is presented to improve production with limited energy supply. Finally, an off-grid battery production factory is tested to illustrate the proposed method. The simulation results demonstrate that the proposed method increases the yield of an off-grid industrial park.