Keywords: distributed generation, DG, microturbines, permanent magnet synchronous generators, power conditioning units, filters, voltage source converters, VSCs, electric power systems, microturbine generation, dynamic modelling
Grid interconnection of microturbine-based distributed generation system
Distributed Generation (DG) is predicted to play an important role in the electric power system in the near future. The insertion of DG systems into existing electric systems has a great impact on real-time system operation and planning. It is widely accepted that Microturbine Generation (MTG) systems are currently attracting much attention for meeting customers' needs in the distributed-power-generation market. In order to investigate the performance of MTG systems when integrated into distribution systems, their efficient modelling is required. This paper presents a dynamic model of an MTG system suitable for grid connection. The proposed model allows a bidirectional power flow between grid and MTG systems. The model is developed in Matlab/Simulink and implemented in the SimPowerSystems library. The components of the models are built from the dynamics of each part with their interconnections. This simplified model is a useful tool for studying the various operational aspects of MTG systems when connected to the grid.