Design and implementation of STATCOM combined with series dynamic breaking resistor for low voltage ride-through of wind farms

Static synchronous compensator (STATCOM), pitching control system, series dynamic breaking resistor (SDBR) and energy storage system have been reported as stabilization methods for fixed speed wind generation system. However, these approaches have drawbacks and are limited in application. Combination of STATCOM and SDBR is supposed to be a cost-effective way to fulfill low voltage ride-through requirement, but design of the combined system has not been concerned yet. A new analytical approach based on quasi-steady-state to quantify the STATCOM rating and SDBR resistance is first proposed in this paper. A typical wind generation unit is used to validate the suggested analytical approach. Performances of the system were studied in SABER and simulation results demonstrated that excellent LVRT performance can be achieved.