STATCOM and UPFC Applications in Power Quality Disturbance Mitigation

The original text references key power system concepts including "STATCOM", "UPFC", "power quality", and "disturbances". To elaborate: STATCOM (Static Synchronous Compensator) is a power electronics-based device that regulates voltage levels through reactive power compensation. Its control logic typically implements phase-locked loop (PLL) synchronization and pulse-width modulation (PWM) techniques to generate compensating currents.

UPFC (Unified Power Flow Controller) combines series and shunt converters to control active/reactive power flow in transmission lines. The control algorithm often involves dq-frame transformation for decoupled power control and uses proportional-integral (PI) controllers for reference tracking.

Power quality encompasses parameters like voltage stability, frequency consistency, and harmonic distortion. Disturbances refer to transient events such as voltage sags, swells, or flickers that disrupt normal operation.

Thus, the discussion likely focuses on how STATCOM and UPFC devices employ advanced control strategies to maintain power quality standards and mitigate system disturbances through real-time compensation algorithms.