By auto reclosing of circuit breaker, as heavy fault current open the circuit and making circuit healthy, clearing around 80 to 90 % faults …..

To prevent that , several measures can be taken:

1-Use directional elements for ground fault and negative sequence protection to ensure the fault is internal to the generator zone.

2-Employ voltage supervision or voltage restraint for overcurrent elements.

3-Implement power swing blocking logic to prevent tripping during stable power swings.

4-Apply definite time or inverse time overexcitation (V/Hz) elements instead of instantaneous reset elements to provide better coordination and avoid overprotection.

*These are some of the measures that can be taken into consideration to avoid this issue.