Enhanced overcurrent algorithm for performance under CT saturation in industrial applications

The computational capabilities of numerical relays allow the development of sophisticated overcurrent algorithms. These algorithms ensure dependable and fast operation of short circuit protection even under severe saturation of current transformers. This eliminates the need for impractical engineering of such applications, and increases confidence levels in cases with relatively well-rated CTs that do not experience extreme saturation but are exposed to currents much higher than the conventional 20 times rated.