Transient Stability Analysis of Power System Considering Multiple Inverter Aggregation Model

With the continuous progress of power system and power electronics technology, multiple power electronic devices play an increasingly important role in power systems. Due to the variety and large number of source-side power electronic devices with different operating principles and control strategies, direct modeling and analysis have become extremely complex. Therefore, this paper addressed the problem of simplifying the model by aggregating multiple power electronic devices on the source side and proposes an aggregated model construction technique based on the multi-inverter single-machine equivalence method, which aims to improve the modeling efficiency of the power system, reduce the difficulty of analysis, and optimize the system performance. Through theoretical analysis and experimental verification, it has been proven that the method can effectively simplify the model of source-side power electronic devices under certain conditions and improve the modeling accuracy and analysis efficiency to a certain extent.