Overcurrent Relay Coordination Setting on Distribution Power System Using Grasshopper optimization Algorithm

Every electrical system, particularly those used in industrial settings, depends on the continuous availability of energy in order to preserve the industry’s ability to produce. The electrical fault will damage electrical equipment. The protection system functions to minimize and even eliminate faults quickly, selectively, and coordinatively in the interest of minimizing system damage and ensuring the uninterrupted supply of electricity. In particular, for overcurrent relays, time dial setting (TDS) is an important aspect that must be considered for protection coordination problems. TDS regulates the relay’s operation time to secure the electrical system. In general, manual computations are used to determine the value of TDS. The method of trial and error must be used to coordinate relays with one another in order to obtain the correct TDS value. This method has developed into an intelligent algorithm that can find a deal effectively and quickly, an algorithm is the grasshopper optimization algorithm (GOA). This paper’s primary goal is to calculate TDS in overcurrent relay coordination with GOA while taking CTI of the primary and backup relays into consideration. Thus, GOA can accurately calculate the TDS value of relay coordination, such as the primary relay and backup relay working at 0.1 s and 0.3 s, while still adhering to the CTI limit of 0.2 s.