Impact of Increased Penetration DFIG on Power Oscillation Damping

Abstract

Wind power is believed to be one of the promised renewable energy sources. At present, various countries already have a high penetration of wind power in the power system. Wind power's impact on the power system's stability is widely researched to ensure system stability remains met. In general, many studies have conducted stability analysis by looking at the system's eigenvalue but have not yet emphasized the system's damping ratio value. The damping ratio shows how an oscillation can be damped, which is necessary for the electric operator. The simulation in this research is conducted with a scenario where the wind generator replaces one of the test system's synchronous generators. This study accommodates the wind generator location's condition far away from the load center transmitted through the long transmission. For each condition, the stability and damping ratio value of the system will be analyzed. The simulation results confirm that the higher the wind generator penetration level, the damping ratio will decrease. A noticeable decline occurs in systems with weak transmission conditions, and this is dangerous for the system.