Microprocessor Protection In Power Distribution Systems

Abstract

The rapid growth in size and complexity of modern power distribution systems has created a corresponding need for advancements in the field of system protection. A device incorporating the inherent intelligence of microprocessor has been developed to replace the conventional electromechanical overcurrent relay in common use at the substation level. The intelligent relay exhibits the flexibility required to cope with frequently changing system configurations. In addition, secondary control and monitoring functions have been implemented to increase system efficiency at minimal cost. The ability to communicate directly with an intelligent relay of this type will also enhance the effectiveness of large scale control systems, whether operated manually or by a centralized computer system.