Application of Series Capacitors for Voltage Regulation, Fault Current Limitation, and Voltage Flicker Control

Recent developments in equipment for protection of series capacitors, damping of resonance, and limitation of fault currents provide a useful means for reducing voltage drop and flicker when induction motors are started or suddenly loaded, and to improve operating conditions of a circuit during normal conditions by decreasing voltage regulation and by reducing short-circuit current during faults on the circuit. These recent developments also include equipment for suppressing ferro-resonance and subsynchronous resonance, and protective equipment to prevent service interruptions because of internal failure in the series capacitor assembly.