Current Protection Scheme for Transformers using the Combination of Digital Differential and Microcontroller

Abstract

The use of transformer protection in electric power systems is very important and critical as transformers are very expensive and they are needed for efficient transportation of electricity to consumers. This paper is aimed at using differential current protection scheme of transformer in combination with microcontroller as its differential relay responsible for sending trip signal when there is fault conduction in the protected zone to the relays responsible to open the circuit. The system is efficient in transformer protection, gives better isolation, as there is fault detection and quick response time to isolate the transformer from the network in other to avoid break down of transformer insulation.