Grid Fault Analysis of Unbalanced Loaded DFIG

Abstract

The electrical energy consumption is rising and there is a steady increase in the demand of power generation. To meet the demand fuel reserves are not sufficient. So, we can go to non-conventional energy sources like solar, tidal, wind and etc. In that wind generating system is rapidly growing one. The wind speed is not constant at all times they can using variable speed wind turbine (VSWT) or Doubly Fed Induction Generator (DFIG). The DFIG wind turbine is recently most used turbine, because it maintains fixed voltage and frequency at variable wind speeds using power electronics equipments like RSC and GSC. In this paper discus the stability of a DFIG wind turbine connected to grid, during unbalanced loads and grid faults. Dynamic analysis and fault analysis to find the stability of system were going to carry out in this work. And to improve stability of system during abnormal conditions STATCOM is proposed.