Conversion of Power Flow Models into Real-Time Simulation Models: A Case Study of OpenDSS to Matlab/Simulink Conversion for a Large-Scale Distribution Network

Given the recent carbon-neutral pledges made by countries around the world, there is clearly a growing need for updating existing distribution grids, which will be essential in facilitating the integration of renewable energy sources and the electrification of the transport and heating sectors. This can be particularly challenging for weak distribution networks in rural areas, which are more susceptible to voltage, power quality, and overloading problems. To better understand and manage these problems, detailed and accurate models of large-scale distribution networks are needed. Real-time simulation of these networks can allow for analysis of various power quality issues and enable a better understanding of the challenges and solutions in controlling distributed energy resources. Accordingly, this paper presents a comprehensive study on the conversion of power flow models into real-time simulation models, focusing on a case study of a large-scale distribution network. A comparative analysis between the OpenDSS and Matlab/Simulink simulations validates the accuracy of the converted models. The outcome of this comparison showed a high degree of accuracy for specific test areas of the model and therefore confirmed proof of concept for this method moving forward.