Stability Study of Grid Connected to Multiple Speed Wind Farms with and without FACTS Integration

Abstract

Integration of wind power into power grid has developed several problems like lack of reactive power at point of common coupling which leads to voltage stability problems for the utility owner. Due to the weakness of shunt capacitor banks in maintaining voltage stability as well as reactive power improvement at point of common coupling and wind turbine generator bus, STATCOM and SVC as dynamic var compensators have been attached at the transmission network to support the stability of the proposed system. In this paper, three wind farms of different wind speed connected to grid with and without flexible AC transmission systems have been proposed. Simulations are carried out using Matlab/Simulink to investigate the performance of the proposed system under normal and abnormal conditions. 