Differential protection of transformer using FPGA

This paper presents a technique of implementing Differential relays based on Field Programmable Gate Arrays (FPGA), which can be used for the protection of transformers, distribution lines, large industrial motors and many equipment's of the power system. Due to its re-configurability, it gives an idea to implement many types of relays on the single FPGA board. In case of microprocessor based relays many peripheral devices are required making the operation slower; but in the case of FPGA, the same can be realized with less number of peripherals, thus making the operation faster. The proposed differential relay gives satisfactory results when simulated on the Xilinx FPGA, thus providing the best solution among existing technologies.