Transfer Limit Enhancement Using Decentralized Robust STATCOM Control for Wind Farm

In this paper, we analyse the effects of the integration of various types of wind generators into power systems based on available (dynamic) transfer capability (ATC). The amount of static (shunt capacitor) and dynamic compensations (STATCOM) to restore¹ and enhance the transfer capability for fixed speed wind generators integration is determined. In addition, we compare the effects of both fixed and variable speed wind farms (WFs) penetration on transfer capability. A decentralized minimax linear quadratic Gaussian (LQG) based STATCOM (static synchronous compensator) controller for fixed speed wind turbine is designed to enhance the ATC. The effectiveness of the suggested control strategy is confirmed by nonlinear dynamic simulations. The simulation result shows that the dynamic voltage stability can be improved by the use of the robust control and thereby power transfer limit increases.