Optimum Relaying Scheme of High Impedance Fault Detection in Micro-Grid

High impedance fault in micro-grid is not encountered by typical over current protection, such as over current relays and fuses due to nonlinear, random, asymmetry and low magnitude of fault current. Low impedance short circuit leads to enormous fault currents which are detectable by typical over current protection in the distribution feeder however Hi-Z fault current raise current magnitude in the 0 ampere to 200 ampere range which triggers the...