Designing a Three-Phase Current Relay Protection System for Small Transient Periods of Power Fluctuations with Enhanced Control

An electrical power system comprises many types of power stations, such as thermal, nuclear, and hydro, an essential three-phase 11kV Power System with and without fault is analyzed and discussed for Small Transient Period Power Fluctuation in the paper. Simulation software MATLAB SimPowerSystem has been used for the simulation of the three-phase current during a fault and also for the simulation of implementation of current relay protection to trip the current when condition input current was higher than pickup current, Ip. Implementation of this current relay should send the signal to the circuit breaker when overcurrent is detected. Comparison results could determine whether.