Biased Differential scheme (Merz-Price Scheme) for protection of Generators: This is most commonly used protection scheme for the alternator stator windings. The scheme is also called biased differential protection and percentage differential protection. The figure below shows a schematic arrangement of Merz-Price protection scheme for a star connected alternator. [wp_ad_camp_1] The differential relay gives protection … Continue reading Merz Price Differential Protection for Generators