Enhanced Power Quality with PV-Driven Active Power Filter in Two-Area Applications

The proposed study presents an advanced PV driven active power filter (PV_APF) based adaptive coordinated control (ADCA) controller aimed at optimizing power flow and improve the power quality (PQ) in large-scale power systems. To offer excellent transient support and provide faster action, a transient control unit (TCU) is also associated with the proposed ADCA. In addition to that, a transient detection unit (TDU) has developed to isolate the PV generation from the main grid within 8-10sec and uses the APF full capacity to provide the desired reactive power, which effectively eliminates the power instability. Moreover, for smooth power transition, a ramp based improved real power recovery strategy (IRPRS) is proposed to restore the PV power output incrementally after the minimization of transient, which improves the settling time as per the standard grid code requirement. During night, the full capacity of APF is applicable for transient mitigation, where as partial shading condition, the APF is applicable for maximum power extraction and stabilize the power fluctuations. The overall system performance is validated through simulation platform at a wide range of possible test cases. The outcomes ensure 24/7 support by delivering substantial enhancements in power transfer capability, enabling stable operation during both local and inter-area oscillations.