Electrical Stability of Large Wind Farms - Grid Connections Modeling

摘要

The penetration of wind power into electrical networks is increasing and therefore the types of generators within the electrical system are also changing. Many wind farm installations usernasynchronous doubly fed induction machine based wind turbines. As such the amount ofrnsynchronous plant in the system is being reduced and one must consider how the change fromrnsynchronous plant to asynchronous plant is affecting the stability of the system. This paperrnaddresses the dynamic modelling of large (MW) capacity Doubly Fed Induction Generatorsrn(DFIG) wind turbines and an open access model of a DFIG is presented. Suitable controllersrnare implemented and described. Application studies are conducted to observe the performancernof the DFIG during power system disturbances such as three-phase faults in the network.rnSimulation results are presented and discussed using typical turbine and network data.