On Evaluating Series Capacitor Bank Protection

This paper deals with the evaluation of series capacitor bank protection applied to transmission lines. To do so, a series-compensated double-circuit transmission line, modeled in Alternative Transients Program (ATP), was evaluated by means of sensitivity and transient analyses. The results reveal how series-capacitor bank protection can bypass the capacitor banks under some fault scenarios, in such a way that this dynamic behavior must be accounted by protection engineers when setting relay parameters.