A Fast Calculation Method for Economic Dispatch of Electro-Thermal Coupling System Considering the Dynamic Process of Heat Transfer

The dynamic spatial and temporal characteristics of heat transfer within heating network pipelines are important factors affecting the accuracy of economic dispatch decision-making results of electro-thermal coupling systems. However, the pipeline heat transmission process is described by partial differential equations, which makes it difficult to solve quickly. Therefore, this study introduces a model for calculating the economic dispatch of the electro-thermal coupling system (EDETCS) that takes into account the pipeline transmission process. Firstly, based on the implicit upwind difference method, a two-port model of branch heat transfer dynamics is established. Secondly, the general term formula of the two-port model is derived. Finally, the established two-port model is applied to the EDETCS. The findings from the example analysis indicate that, in contrast to the conventional calculation method, the proposed model improves the calculation speed while ensuring the accuracy of the solution.