Stability Analysis of Grid Connected Wind Farm Supported by SVC and STATCOM

To create power at a low cost, non-conventional energy resources, particularly wind energy, are exploited. A wind turbine is used to create power that may generate or absorb reactive power to or from the grid during a grid outage. The objective is to analyze the impact on small signal and transient stability of wind turbines by introducing FACTS devices. Due to oscillations in voltage and frequency, a high penetration of wind turbines produces a stability problem in the power system, lowering the system's efficiency and power quality. Grid connectivity difficulties include power quality, the consequence of a low power factor, and inadequate grid stability. After a severe disturbance, the effects of the Static Var Compensator (SVC) and Static Synchronous Compensator (STATCOM) on the stability of wind farms based on fixed speed induction generators (FSIG) were investigated in this work. Because of the asynchronous nature of fixed speed induction generators, instability in FSIG-based wind farms is caused by the FISG's excessive reactive power absorption following a breakdown. This issue occurs as a result of FISG rotor slip, which rises during the fault, increasing reactive power consumption. The performance of a wind farm equipped with SVC and STATCOM to increase wind farm stability during and after a malfunction is compared. Both devices can improve system stability during and after a disturbance, according to simulation data, especially when the network is poor. It has been demonstrated that the STATCOM outperforms the SVC in terms of improving wind farm stability and providing greater reactive power assistance to the network