This invention relates to a method of designing a digital integrated circuit for a multi-functional digital protective relay, emphasizing a digital module part, and input voltage and current signals are processed by a digital signal processor module to calculate the. This invention relates to a method of designing a digital integrated circuit for a multi-functional digital protective relay, emphasizing a digital module part, and input voltage and current signals are processed by a digital signal processor module to calculate the. Nevertheless, numerical relays embedded with digital signal processor (DSP) are able to improve the protection operation significantly. These relays are capable of performing complex processing faster and with higher accuracy as. In this paper, three phase transmission power system with three different protective schemes such as over current relay, over and under voltage relay and over and under frequency relay is developed using MATLAB/Simulink toolbox. The protective relay is tested for different operating conditions of. Abstract—This paper presents the impact of changes in distance protection algorithm when performing simplifications in certain calculations. Advancements in digital technology have allowed relay manufacturers to include more and more relay functions within a single hardware platform. A hardware structure of a DC low-voltage circuit breaker protection device is proposed, but the system design is more complex due to the use of a diverter to.
