Analysis of impact on rotor angle stability of DFIG wind turbines employing STATCOM

Abstract

Due to rapid increase in population and industrial growth power demand occurs. Non conventional energy resource, especially wind energy is used to generate the power at low cost. Doubly Fed Induction Generator (DFIG) is used to generate the power which has the capability to generate or absorb the reactive power to or from the grid during grid fault. The objective is to analyze the impact on small signal and transient stability of DFIG wind turbines by Power System stabilizer. High penetration of DFIG wind turbines creates the stability problem in power system due to fluctuations in voltage and frequency which reduces the efficiency and power quality of the system. The generation of power from wind energy causes damage to the system. Power qualities, impact of low power factor, poor grid stability are the issues related with grid interconnection. In proposed method, Static Compensator (STATCOM) controls the voltage, reactive power, power factor. It also reduces the line current, power losses and maximizes the power transfer capability. The MATLAB/SIMULINK software is used to analyze the impact on rotor angle stability of DFIG wind turbines employing STATCOM will be used as Grid Side Converter(GSC) of DFIG wind turbines to provide reactive power compensation and to enhance stability of the power system.

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