Stability control of renewable energy sources in distribution systems

Deregulation in the power market has encouraged the move towards distributed generation, where many smaller generating plants located close to major loads are penetrating into interconnected power systems. When the penetration level increases, several other problems will need to be faced and solved. Stability problems may arise, new planning tools will be needed, dispatching of energy sources with typical random production will be necessary, protection systems must be integrated and revised. In order to simulate power system dynamics programmable opened software in Matlab - DynaSolv was developed. The paper describes various principles of penetration synchronous machine type DGS into distribution network. This study provides possible complex analysis view on DGS stability issues, which can answer the possibility of connection.