Control stabilisation of multiple distributed generation

Grid connected distributed generation (DG) increases reliability and additional benefits for consumers as well as utilities. Recently, different types of DG are connected into distribution networks. Different control phenomena are applied based on types of DG. The stable and reliable operation of such power system requires sophisticated control. This paper presents a small-signal analysis for investigating dynamic behaviours of the system with multiple DG and also investigating control interactions between different types of DG. Dynamic model of a synchronous generator (SG) based hydro generator and inverter based photovoltaic/wind distributed resources are considered for case studies to investigate grid connected and islanding mode of operation.