Wind farms access to the Romanian transport system

Nowadays, wind generation is developing in the whole world. In conformity with the Romanian present regulations, the wind energy producers must obtain the technical interconnection approval, which consists in the documents presented to the transmission grid operator: an interconnection study for the wind turbines, urbanism certificate, and the property certificate. As the wind turbines are increasingly penetrating the power systems, their impact on power quality is becoming important. Electrical flicker is produced due to the wind turbine switching operations (start or stop), and due to the continuous operation. The paper deals with the access of the wind farms to the Romanian transport system, both from the legislative (policies, regulations, certificates, and incentives) and from the power quality point of view. The flicker study becomes necessary as the wind power penetration level increases quickly.