Develop Protection System for Stem Turbines Generators using Multifunction Relays in Zawia Oil Refining Company (ARC)

الملخص

Digital technology has evolved, giving rise to the development of multifunction relays that provide several protection functions simultaneously, in addition to performing control, measurement, and communications functions. For these reasons, multifunction relay applications go beyond traditional protection and solve specific protection and control problems. These devices can be used extensively in Generators which, in general, lack bus differential protection, breaker-failure backup, and automatic transformer restoration systems as well as for loss-of-coordination conditions caused by simultaneous faults. These limitations of traditional protection and control schemes impact power system restoration time and deteriorate primary equipment lifetime. The purpose of this paper is to describe problems found in Generator's systems that lack the schemes mentioned above, and to recommend solutions based on the application of multifunction relays and protection logic processors.