*6.1. Fault Location*

Incidence of fault on a particular node/line of the hybrid grid affects the nature of faulty transients, which ultimately affects the performance of fault recognition algorithm. To investigate this effect, the algorithm was tested for the faults, simulated at various critical locations of the hybrid grid. FI corresponding to all the phases during the PG fault event at various nodes of hybrid grid are tabulated in Table 4.


**Table 4.** Fault Index at Different Nodes of Test System with PG Fault.

It can be observed from Table 4 that the FI corresponding to the faulty phase A is higher compared to TM at all locations. However, healthy phases B and C have lower FI compared to TM. Hence, PG faulty is effectively recognized at all nodes of the test hybrid grid with RE penetration. Detailed discussion of PG fault at node 652 and 634 is presented in following subsections.
