A new sliding mode control of STATCOM and its effects on wind farm

摘要

This paper presents a sliding mode control of STATCOM, intend for its application to wind farm connection to the grid. The proposed inverse system sliding mode controller based on nonlinear feedback linearization technology for system decoupling, which enhance the transient stability of wind farms and stabilizes the grid voltage about the given operating point when the fault occurs closer to the wind farms. Simulation results show that, compared with the PI controller of inverse system, the proposed controller has better control effect on wind power system and which assist in improving capability of the wind farms to ride through disturbances, dynamic power flow control of the transmission lines, enhancing power oscillation damping under a sudden fault.