Quantitative Method of Response Value of Integrated Energy Equipment Based on Global Sensitivity Analysis

Integrated demand response is an effective strategy for improving energy efficiency and facilitating the integration of renewable clean energy, of which the essence is to guide users into bidirectional interactions between source and load by the multi-energy coupling capabilities of integrated energy devices. Accurately evaluating the response values of integrated energy devices is essential for improving the operational control level of integrated energy systems. Therefore, this paper proposes a method for quantifying the response value of integrated energy devices based on Sobol’s global sensitivity analysis. First, an integrated energy system generalized optimization model is developed with the objective function of minimizing total operating costs while considering multiple types of integrated demand response. A surrogate model for the integrated energy system is conducted based on particle swarm optimization-backpropagation (PSO-BP) neural network. The Sobol’s global sensitivity analysis is then applied to quantify the global sensitivity indices of device efficiency parameters in terms of cost, user satisfaction, integrated energy utilization rate, and electricity substitution rate, which are used to assess the response value of integrated energy devices and identify key devices influencing system states. Finally, simulations based on a commercial park in Jiangsu Province are conducted to determine the global sensitivity coefficients of the efficiency for each integrated energy device. The effect of various device efficiencies on system states is investigated with the response value of integrated energy devices calculated precisely, and the effectiveness of the proposed method is verified.