Block diagram of integrated energy system in the paper industry park. The energy production unit includes the electrical energy unit, which refers to the main power grid (GRID), the wind turbines (WT), the photovoltaic panels (PV), the coal yard (COAL), and the natural gas station (GAS).
(This article belongs to the Special Issue Multi-Energy Systems Operation, Economics and Policy to Facilitate Low-Carbon Energy Transition) Industrial parks, characterized by the clustering of multiple factories and interconnected energy sources, require optimized operational strategies for their Integrated Energy Systems (IES).
The electricity load required for the production of the industrial park is shown in Fig. 4 (b). As can be seen, the electricity load in summer and autumn is 20% higher than that in spring and winter. From Fig. 4 (c), the minimum of hydrogen load is 105.458 kW and the maximum is 339.196 kW.
To demonstrate the effectiveness of this model, we selected a paper cluster industrial park as an example simulation, which resulted in the reduction of overall cost by 13.46% and overall carbon emissions by 28.658 tons.
For industrial parks where hydrogen is commonly utilized, a feasible solution for planning the coupling of hydrogen and other energies is provided in this paper. In the aspect of storage modeling, a long-term hydrogen storage model considering different time steps is newly proposed.
It is assumed that land area occupied by the industrial park is 26 km 2, and 24 km 2 is adopted for buildings. The heating and cooling loads of buildings are shown in Fig. 4 (a), which are simulated by the hourly air temperature. Among them, the maximum cooling load is 2933.78 kW, and the maximum heating load is 1439.52 kW.